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198 vulnerabilities found for single_sign-on by redhat
CVE-2025-9784 (GCVE-0-2025-9784)
Vulnerability from nvd – Published: 2025-09-02 13:37 – Updated: 2026-01-08 22:27
VLAI?
Title
Undertow: undertow madeyoureset http/2 ddos vulnerability
Summary
A flaw was found in Undertow where malformed client requests can trigger server-side stream resets without triggering abuse counters. This issue, referred to as the "MadeYouReset" attack, allows malicious clients to induce excessive server workload by repeatedly causing server-side stream aborts. While not a protocol bug, this highlights a common implementation weakness that can be exploited to cause a denial of service (DoS).
Severity ?
7.5 (High)
CWE
- CWE-770 - Allocation of Resources Without Limits or Throttling
Assigner
References
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Impacted products
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Affected:
0 , < 2.2.38.Final
(semver)
|
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CVE-2023-1932 (GCVE-0-2023-1932)
Vulnerability from nvd – Published: 2024-11-07 10:00 – Updated: 2024-11-07 14:09
VLAI?
Title
Hibernate-validator: rendering of invalid html with safehtml leads to html injection and xss
Summary
A flaw was found in hibernate-validator's 'isValid' method in the org.hibernate.validator.internal.constraintvalidators.hv.SafeHtmlValidator class, which can be bypassed by omitting the tag ending in a less-than character. Browsers may render an invalid html, allowing HTML injection or Cross-Site-Scripting (XSS) attacks.
Severity ?
6.1 (Medium)
CWE
- CWE-79 - Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
Assigner
References
| URL | Tags | |||||||
|---|---|---|---|---|---|---|---|---|
|
||||||||
Impacted products
| Vendor | Product | Version | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
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||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
|
||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Credits
Red Hat would like to thank Christian Kistner (SySS GmbH) and Moritz Bechler (SySS GmbH) for reporting this issue.
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CVE-2024-8883 (GCVE-0-2024-8883)
Vulnerability from nvd – Published: 2024-09-19 15:48 – Updated: 2025-11-11 15:58
VLAI?
Title
Keycloak: vulnerable redirect uri validation results in open redirec
Summary
A misconfiguration flaw was found in Keycloak. This issue can allow an attacker to redirect users to an arbitrary URL if a 'Valid Redirect URI' is set to http://localhost or http://127.0.0.1, enabling sensitive information such as authorization codes to be exposed to the attacker, potentially leading to session hijacking.
Severity ?
6.1 (Medium)
CWE
- CWE-601 - URL Redirection to Untrusted Site ('Open Redirect')
Assigner
References
Impacted products
| Vendor | Product | Version | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
Affected:
0 , < 22.0.12
(semver)
Affected: 23.0.0 , < 24.0.7 (semver) Affected: 25.0.0 , < 25.0.5 (semver) |
|||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
|
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Credits
Red Hat would like to thank Karsten Meyer zu Selhausen and Niklas Conrad for reporting this issue.
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CVE-2023-6841 (GCVE-0-2023-6841)
Vulnerability from nvd – Published: 2024-09-10 16:15 – Updated: 2025-11-08 07:10
VLAI?
Title
Keycloak: amount of attributes per object is not limited and it may lead to dos
Summary
A denial of service vulnerability was found in keycloak where the amount of attributes per object is not limited,an attacker by sending repeated HTTP requests could cause a resource exhaustion when the application send back rows with long attribute values.
Severity ?
7.5 (High)
CWE
- CWE-231 - Improper Handling of Extra Values
Assigner
References
| URL | Tags | |||||||
|---|---|---|---|---|---|---|---|---|
|
||||||||
Impacted products
| Vendor | Product | Version | |||||||||||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
Affected:
0 , < 24.0.0
(semver)
|
|||||||||||||||||||||||||||||||||||||||
|
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CVE-2024-7341 (GCVE-0-2024-7341)
Vulnerability from nvd – Published: 2024-09-09 18:51 – Updated: 2025-11-13 17:36
VLAI?
Title
Wildfly-elytron: org.keycloak/keycloak-services: session fixation in elytron saml adapters
Summary
A session fixation issue was discovered in the SAML adapters provided by Keycloak. The session ID and JSESSIONID cookie are not changed at login time, even when the turnOffChangeSessionIdOnLogin option is configured. This flaw allows an attacker who hijacks the current session before authentication to trigger session fixation.
Severity ?
7.1 (High)
CWE
- CWE-384 - Session Fixation
Assigner
References
| URL | Tags | ||||||||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
|||||||||||||||||||||||||||||||||||
Impacted products
| Vendor | Product | Version | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
Affected:
0 , < 22.0.12
(semver)
Affected: 23.0.0 , < 24.0.7 (semver) Affected: 25.0.0 , < 25.0.5 (semver) |
||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
|
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CVE-2024-4629 (GCVE-0-2024-4629)
Vulnerability from nvd – Published: 2024-09-03 19:42 – Updated: 2025-11-21 06:53
VLAI?
Title
Keycloak: potential bypass of brute force protection
Summary
A vulnerability was found in Keycloak. This flaw allows attackers to bypass brute force protection by exploiting the timing of login attempts. By initiating multiple login requests simultaneously, attackers can exceed the configured limits for failed attempts before the system locks them out. This timing loophole enables attackers to make more guesses at passwords than intended, potentially compromising account security on affected systems.
Severity ?
6.5 (Medium)
CWE
- CWE-837 - Improper Enforcement of a Single, Unique Action
Assigner
References
| URL | Tags | ||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
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Impacted products
| Vendor | Product | Version | ||||||||||||||||||||||||||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
Affected:
24.0.3
|
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|
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CVE-2024-7885 (GCVE-0-2024-7885)
Vulnerability from nvd – Published: 2024-08-21 14:13 – Updated: 2025-11-07 21:05
VLAI?
Title
Undertow: improper state management in proxy protocol parsing causes information leakage
Summary
A vulnerability was found in Undertow where the ProxyProtocolReadListener reuses the same StringBuilder instance across multiple requests. This issue occurs when the parseProxyProtocolV1 method processes multiple requests on the same HTTP connection. As a result, different requests may share the same StringBuilder instance, potentially leading to information leakage between requests or responses. In some cases, a value from a previous request or response may be erroneously reused, which could lead to unintended data exposure. This issue primarily results in errors and connection termination but creates a risk of data leakage in multi-request environments.
Severity ?
7.5 (High)
CWE
- CWE-362 - Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')
Assigner
References
| URL | Tags | ||||||||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
|||||||||||||||||||||||||||||||||||
Impacted products
| Vendor | Product | Version | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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|
Affected:
0 , < 2.2.36.Final
(custom)
Affected: 2.3.0.Alpha1 , < 2.3.17.Final (custom) |
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|
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Credits
Red Hat would like to thank BfC for reporting this issue.
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CVE-2024-1132 (GCVE-0-2024-1132)
Vulnerability from nvd – Published: 2024-04-17 13:21 – Updated: 2025-11-07 20:40
VLAI?
Title
Keycloak: path transversal in redirection validation
Summary
A flaw was found in Keycloak, where it does not properly validate URLs included in a redirect. This issue could allow an attacker to construct a malicious request to bypass validation and access other URLs and sensitive information within the domain or conduct further attacks. This flaw affects any client that utilizes a wildcard in the Valid Redirect URIs field, and requires user interaction within the malicious URL.
Severity ?
8.1 (High)
CWE
- CWE-22 - Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
Assigner
References
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Impacted products
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|
Affected:
21.1.0 , < 22.0.10
(semver)
Affected: 23.0.0 , < 24.0.3 (semver) |
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Credits
Red Hat would like to thank Axel Flamcourt for reporting this issue.
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CVE-2024-1635 (GCVE-0-2024-1635)
Vulnerability from nvd – Published: 2024-02-19 21:23 – Updated: 2025-11-07 20:40
VLAI?
Title
Undertow: out-of-memory error after several closed connections with wildfly-http-client protocol
Summary
A vulnerability was found in Undertow. This vulnerability impacts a server that supports the wildfly-http-client protocol. Whenever a malicious user opens and closes a connection with the HTTP port of the server and then closes the connection immediately, the server will end with both memory and open file limits exhausted at some point, depending on the amount of memory available.
At HTTP upgrade to remoting, the WriteTimeoutStreamSinkConduit leaks connections if RemotingConnection is closed by Remoting ServerConnectionOpenListener. Because the remoting connection originates in Undertow as part of the HTTP upgrade, there is an external layer to the remoting connection. This connection is unaware of the outermost layer when closing the connection during the connection opening procedure. Hence, the Undertow WriteTimeoutStreamSinkConduit is not notified of the closed connection in this scenario. Because WriteTimeoutStreamSinkConduit creates a timeout task, the whole dependency tree leaks via that task, which is added to XNIO WorkerThread. So, the workerThread points to the Undertow conduit, which contains the connections and causes the leak.
Severity ?
7.5 (High)
CWE
- CWE-400 - Uncontrolled Resource Consumption
Assigner
References
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Impacted products
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|
Affected:
1.31.0
|
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CVE-2023-6291 (GCVE-0-2023-6291)
Vulnerability from nvd – Published: 2024-01-26 14:23 – Updated: 2025-11-11 16:12
VLAI?
Title
Keycloak: redirect_uri validation bypass
Summary
A flaw was found in the redirect_uri validation logic in Keycloak. This issue may allow a bypass of otherwise explicitly allowed hosts. A successful attack may lead to an access token being stolen, making it possible for the attacker to impersonate other users.
Severity ?
7.1 (High)
CWE
- CWE-601 - URL Redirection to Untrusted Site ('Open Redirect')
Assigner
References
| URL | Tags | |||||||||||||||||||||||||||||||||||||||||||
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Impacted products
| Vendor | Product | Version | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Red Hat | Red Hat build of Keycloak 22 |
Unaffected:
22.0.7-1 , < *
(rpm)
cpe:/a:redhat:build_keycloak:22::el9 |
|||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
|
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CVE-2023-2585 (GCVE-0-2023-2585)
Vulnerability from nvd – Published: 2023-12-21 09:24 – Updated: 2024-08-02 06:26
VLAI?
Title
Keycloak: client access via device auth request spoof
Summary
Keycloak's device authorization grant does not correctly validate the device code and client ID. An attacker client could abuse the missing validation to spoof a client consent request and trick an authorization admin into granting consent to a malicious OAuth client or possible unauthorized access to an existing OAuth client.
Severity ?
CWE
- CWE-358 - Improperly Implemented Security Check for Standard
Assigner
References
| URL | Tags | ||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
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Impacted products
| Vendor | Product | Version | ||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Red Hat | Red Hat Single Sign-On 7 |
cpe:/a:redhat:red_hat_single_sign_on:7.6.4 |
||||||||||||||||||||||
|
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CVE-2023-6927 (GCVE-0-2023-6927)
Vulnerability from nvd – Published: 2023-12-18 22:59 – Updated: 2025-11-11 15:55
VLAI?
Title
Keycloak: open redirect via "form_post.jwt" jarm response mode
Summary
A flaw was found in Keycloak. This issue may allow an attacker to steal authorization codes or tokens from clients using a wildcard in the JARM response mode "form_post.jwt" which could be used to bypass the security patch implemented to address CVE-2023-6134.
Severity ?
4.6 (Medium)
CWE
- CWE-601 - URL Redirection to Untrusted Site ('Open Redirect')
Assigner
References
| URL | Tags | |||||||||||||||||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
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Impacted products
| Vendor | Product | Version | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Red Hat | Red Hat build of Keycloak 22 |
Unaffected:
22-7 , < *
(rpm)
cpe:/a:redhat:build_keycloak:22::el9 |
|||||||||||||||||||||||||||||||||||||||||||||||||||||||||
|
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Credits
Red Hat would like to thank Pontus Hanssen (Pontus.Hanssen@omegapoint.se) for reporting this issue.
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CVE-2023-48795 (GCVE-0-2023-48795)
Vulnerability from nvd – Published: 2023-12-18 00:00 – Updated: 2025-11-04 22:05
VLAI?
Summary
The SSH transport protocol with certain OpenSSH extensions, found in OpenSSH before 9.6 and other products, allows remote attackers to bypass integrity checks such that some packets are omitted (from the extension negotiation message), and a client and server may consequently end up with a connection for which some security features have been downgraded or disabled, aka a Terrapin attack. This occurs because the SSH Binary Packet Protocol (BPP), implemented by these extensions, mishandles the handshake phase and mishandles use of sequence numbers. For example, there is an effective attack against SSH's use of ChaCha20-Poly1305 (and CBC with Encrypt-then-MAC). The bypass occurs in chacha20-poly1305@openssh.com and (if CBC is used) the -etm@openssh.com MAC algorithms. This also affects Maverick Synergy Java SSH API before 3.1.0-SNAPSHOT, Dropbear through 2022.83, Ssh before 5.1.1 in Erlang/OTP, PuTTY before 0.80, AsyncSSH before 2.14.2, golang.org/x/crypto before 0.17.0, libssh before 0.10.6, libssh2 through 1.11.0, Thorn Tech SFTP Gateway before 3.4.6, Tera Term before 5.1, Paramiko before 3.4.0, jsch before 0.2.15, SFTPGo before 2.5.6, Netgate pfSense Plus through 23.09.1, Netgate pfSense CE through 2.7.2, HPN-SSH through 18.2.0, ProFTPD before 1.3.8b (and before 1.3.9rc2), ORYX CycloneSSH before 2.3.4, NetSarang XShell 7 before Build 0144, CrushFTP before 10.6.0, ConnectBot SSH library before 2.2.22, Apache MINA sshd through 2.11.0, sshj through 0.37.0, TinySSH through 20230101, trilead-ssh2 6401, LANCOM LCOS and LANconfig, FileZilla before 3.66.4, Nova before 11.8, PKIX-SSH before 14.4, SecureCRT before 9.4.3, Transmit5 before 5.10.4, Win32-OpenSSH before 9.5.0.0p1-Beta, WinSCP before 6.2.2, Bitvise SSH Server before 9.32, Bitvise SSH Client before 9.33, KiTTY through 0.76.1.13, the net-ssh gem 7.2.0 for Ruby, the mscdex ssh2 module before 1.15.0 for Node.js, the thrussh library before 0.35.1 for Rust, and the Russh crate before 0.40.2 for Rust.
Severity ?
5.9 (Medium)
CWE
- n/a
Assigner
References
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"url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/MKQRBF3DWMWPH36LBCOBUTSIZRTPEZXB/"
},
{
"url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/33XHJUB6ROFUOH2OQNENFROTVH6MHSHA/"
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"url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/HYEDEXIKFKTUJIN43RG4B7T5ZS6MHUSP/"
}
],
"title": "CVE Program Container"
},
{
"metrics": [
{
"cvssV3_1": {
"attackComplexity": "HIGH",
"attackVector": "NETWORK",
"availabilityImpact": "NONE",
"baseScore": 5.9,
"baseSeverity": "MEDIUM",
"confidentialityImpact": "NONE",
"integrityImpact": "HIGH",
"privilegesRequired": "NONE",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N",
"version": "3.1"
}
},
{
"other": {
"content": {
"id": "CVE-2023-48795",
"options": [
{
"Exploitation": "poc"
},
{
"Automatable": "no"
},
{
"Technical Impact": "partial"
}
],
"role": "CISA Coordinator",
"timestamp": "2023-12-22T05:01:05.519910Z",
"version": "2.0.3"
},
"type": "ssvc"
}
}
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"descriptions": [
{
"cweId": "CWE-354",
"description": "CWE-354 Improper Validation of Integrity Check Value",
"lang": "en",
"type": "CWE"
}
]
}
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"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
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"vendor": "n/a",
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"version": "n/a"
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"value": "The SSH transport protocol with certain OpenSSH extensions, found in OpenSSH before 9.6 and other products, allows remote attackers to bypass integrity checks such that some packets are omitted (from the extension negotiation message), and a client and server may consequently end up with a connection for which some security features have been downgraded or disabled, aka a Terrapin attack. This occurs because the SSH Binary Packet Protocol (BPP), implemented by these extensions, mishandles the handshake phase and mishandles use of sequence numbers. For example, there is an effective attack against SSH\u0027s use of ChaCha20-Poly1305 (and CBC with Encrypt-then-MAC). The bypass occurs in chacha20-poly1305@openssh.com and (if CBC is used) the -etm@openssh.com MAC algorithms. This also affects Maverick Synergy Java SSH API before 3.1.0-SNAPSHOT, Dropbear through 2022.83, Ssh before 5.1.1 in Erlang/OTP, PuTTY before 0.80, AsyncSSH before 2.14.2, golang.org/x/crypto before 0.17.0, libssh before 0.10.6, libssh2 through 1.11.0, Thorn Tech SFTP Gateway before 3.4.6, Tera Term before 5.1, Paramiko before 3.4.0, jsch before 0.2.15, SFTPGo before 2.5.6, Netgate pfSense Plus through 23.09.1, Netgate pfSense CE through 2.7.2, HPN-SSH through 18.2.0, ProFTPD before 1.3.8b (and before 1.3.9rc2), ORYX CycloneSSH before 2.3.4, NetSarang XShell 7 before Build 0144, CrushFTP before 10.6.0, ConnectBot SSH library before 2.2.22, Apache MINA sshd through 2.11.0, sshj through 0.37.0, TinySSH through 20230101, trilead-ssh2 6401, LANCOM LCOS and LANconfig, FileZilla before 3.66.4, Nova before 11.8, PKIX-SSH before 14.4, SecureCRT before 9.4.3, Transmit5 before 5.10.4, Win32-OpenSSH before 9.5.0.0p1-Beta, WinSCP before 6.2.2, Bitvise SSH Server before 9.32, Bitvise SSH Client before 9.33, KiTTY through 0.76.1.13, the net-ssh gem 7.2.0 for Ruby, the mscdex ssh2 module before 1.15.0 for Node.js, the thrussh library before 0.35.1 for Rust, and the Russh crate before 0.40.2 for Rust."
}
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"description": "n/a",
"lang": "en",
"type": "text"
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"url": "https://groups.google.com/g/golang-announce/c/-n5WqVC18LQ"
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{
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{
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{
"url": "https://www.freebsd.org/security/advisories/FreeBSD-SA-23:19.openssh.asc"
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"url": "https://arstechnica.com/security/2023/12/hackers-can-break-ssh-channel-integrity-using-novel-data-corruption-attack/"
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{
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},
"cveMetadata": {
"assignerOrgId": "8254265b-2729-46b6-b9e3-3dfca2d5bfca",
"assignerShortName": "mitre",
"cveId": "CVE-2023-48795",
"datePublished": "2023-12-18T00:00:00.000Z",
"dateReserved": "2023-11-20T00:00:00.000Z",
"dateUpdated": "2025-11-04T22:05:21.417Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2"
}
CVE-2023-6134 (GCVE-0-2023-6134)
Vulnerability from nvd – Published: 2023-12-14 21:42 – Updated: 2025-11-11 16:25
VLAI?
Title
Keycloak: reflected xss via wildcard in oidc redirect_uri
Summary
A flaw was found in Keycloak that prevents certain schemes in redirects, but permits them if a wildcard is appended to the token. This issue could allow an attacker to submit a specially crafted request leading to cross-site scripting (XSS) or further attacks. This flaw is the result of an incomplete fix for CVE-2020-10748.
Severity ?
4.6 (Medium)
CWE
- CWE-79 - Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
Assigner
References
| URL | Tags | |||||||||||||||||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
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Impacted products
| Vendor | Product | Version | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Red Hat | Red Hat build of Keycloak 22 |
Unaffected:
22.0.7-1 , < *
(rpm)
cpe:/a:redhat:build_keycloak:22::el9 |
||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
|
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Credits
Red Hat would like to thank Lauritz Holtmann (https://security.lauritz-holtmann.de/) for reporting this issue.
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CVE-2023-6563 (GCVE-0-2023-6563)
Vulnerability from nvd – Published: 2023-12-14 18:01 – Updated: 2025-11-11 15:10
VLAI?
Title
Keycloak: offline session token dos
Summary
An unconstrained memory consumption vulnerability was discovered in Keycloak. It can be triggered in environments which have millions of offline tokens (> 500,000 users with each having at least 2 saved sessions). If an attacker creates two or more user sessions and then open the "consents" tab of the admin User Interface, the UI attempts to load a huge number of offline client sessions leading to excessive memory and CPU consumption which could potentially crash the entire system.
Severity ?
7.7 (High)
CWE
- CWE-770 - Allocation of Resources Without Limits or Throttling
Assigner
References
| URL | Tags | |||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
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Impacted products
| Vendor | Product | Version | ||||||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Red Hat | Red Hat Single Sign-On 7.6 for RHEL 7 |
Unaffected:
0:18.0.11-2.redhat_00003.1.el7sso , < *
(rpm)
cpe:/a:redhat:red_hat_single_sign_on:7.6::el7 |
||||||||||||||||||||||||||||||||
|
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CVE-2025-9784 (GCVE-0-2025-9784)
Vulnerability from cvelistv5 – Published: 2025-09-02 13:37 – Updated: 2026-01-08 22:27
VLAI?
Title
Undertow: undertow madeyoureset http/2 ddos vulnerability
Summary
A flaw was found in Undertow where malformed client requests can trigger server-side stream resets without triggering abuse counters. This issue, referred to as the "MadeYouReset" attack, allows malicious clients to induce excessive server workload by repeatedly causing server-side stream aborts. While not a protocol bug, this highlights a common implementation weakness that can be exploited to cause a denial of service (DoS).
Severity ?
7.5 (High)
CWE
- CWE-770 - Allocation of Resources Without Limits or Throttling
Assigner
References
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Impacted products
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|
Affected:
0 , < 2.2.38.Final
(semver)
|
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CVE-2023-1932 (GCVE-0-2023-1932)
Vulnerability from cvelistv5 – Published: 2024-11-07 10:00 – Updated: 2024-11-07 14:09
VLAI?
Title
Hibernate-validator: rendering of invalid html with safehtml leads to html injection and xss
Summary
A flaw was found in hibernate-validator's 'isValid' method in the org.hibernate.validator.internal.constraintvalidators.hv.SafeHtmlValidator class, which can be bypassed by omitting the tag ending in a less-than character. Browsers may render an invalid html, allowing HTML injection or Cross-Site-Scripting (XSS) attacks.
Severity ?
6.1 (Medium)
CWE
- CWE-79 - Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
Assigner
References
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Impacted products
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| Red Hat | A-MQ Clients 2 |
cpe:/a:redhat:a_mq_clients:2 |
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Credits
Red Hat would like to thank Christian Kistner (SySS GmbH) and Moritz Bechler (SySS GmbH) for reporting this issue.
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CVE-2024-8883 (GCVE-0-2024-8883)
Vulnerability from cvelistv5 – Published: 2024-09-19 15:48 – Updated: 2025-11-11 15:58
VLAI?
Title
Keycloak: vulnerable redirect uri validation results in open redirec
Summary
A misconfiguration flaw was found in Keycloak. This issue can allow an attacker to redirect users to an arbitrary URL if a 'Valid Redirect URI' is set to http://localhost or http://127.0.0.1, enabling sensitive information such as authorization codes to be exposed to the attacker, potentially leading to session hijacking.
Severity ?
6.1 (Medium)
CWE
- CWE-601 - URL Redirection to Untrusted Site ('Open Redirect')
Assigner
References
| URL | Tags | ||||||||||||||||||||||||||||||||||||||||||||||||||||
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Impacted products
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|
Affected:
0 , < 22.0.12
(semver)
Affected: 23.0.0 , < 24.0.7 (semver) Affected: 25.0.0 , < 25.0.5 (semver) |
|||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
|
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Credits
Red Hat would like to thank Karsten Meyer zu Selhausen and Niklas Conrad for reporting this issue.
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CVE-2023-6841 (GCVE-0-2023-6841)
Vulnerability from cvelistv5 – Published: 2024-09-10 16:15 – Updated: 2025-11-08 07:10
VLAI?
Title
Keycloak: amount of attributes per object is not limited and it may lead to dos
Summary
A denial of service vulnerability was found in keycloak where the amount of attributes per object is not limited,an attacker by sending repeated HTTP requests could cause a resource exhaustion when the application send back rows with long attribute values.
Severity ?
7.5 (High)
CWE
- CWE-231 - Improper Handling of Extra Values
Assigner
References
| URL | Tags | |||||||
|---|---|---|---|---|---|---|---|---|
|
||||||||
Impacted products
| Vendor | Product | Version | |||||||||||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
Affected:
0 , < 24.0.0
(semver)
|
|||||||||||||||||||||||||||||||||||||||
|
|||||||||||||||||||||||||||||||||||||||
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CVE-2024-7341 (GCVE-0-2024-7341)
Vulnerability from cvelistv5 – Published: 2024-09-09 18:51 – Updated: 2025-11-13 17:36
VLAI?
Title
Wildfly-elytron: org.keycloak/keycloak-services: session fixation in elytron saml adapters
Summary
A session fixation issue was discovered in the SAML adapters provided by Keycloak. The session ID and JSESSIONID cookie are not changed at login time, even when the turnOffChangeSessionIdOnLogin option is configured. This flaw allows an attacker who hijacks the current session before authentication to trigger session fixation.
Severity ?
7.1 (High)
CWE
- CWE-384 - Session Fixation
Assigner
References
| URL | Tags | ||||||||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
|||||||||||||||||||||||||||||||||||
Impacted products
| Vendor | Product | Version | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
Affected:
0 , < 22.0.12
(semver)
Affected: 23.0.0 , < 24.0.7 (semver) Affected: 25.0.0 , < 25.0.5 (semver) |
||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
|
||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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CVE-2024-4629 (GCVE-0-2024-4629)
Vulnerability from cvelistv5 – Published: 2024-09-03 19:42 – Updated: 2025-11-21 06:53
VLAI?
Title
Keycloak: potential bypass of brute force protection
Summary
A vulnerability was found in Keycloak. This flaw allows attackers to bypass brute force protection by exploiting the timing of login attempts. By initiating multiple login requests simultaneously, attackers can exceed the configured limits for failed attempts before the system locks them out. This timing loophole enables attackers to make more guesses at passwords than intended, potentially compromising account security on affected systems.
Severity ?
6.5 (Medium)
CWE
- CWE-837 - Improper Enforcement of a Single, Unique Action
Assigner
References
| URL | Tags | ||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
|||||||||||||||||||||||||||||
Impacted products
| Vendor | Product | Version | ||||||||||||||||||||||||||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
Affected:
24.0.3
|
||||||||||||||||||||||||||||||||||||||||||||||||||||||
|
||||||||||||||||||||||||||||||||||||||||||||||||||||||
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CVE-2024-7885 (GCVE-0-2024-7885)
Vulnerability from cvelistv5 – Published: 2024-08-21 14:13 – Updated: 2025-11-07 21:05
VLAI?
Title
Undertow: improper state management in proxy protocol parsing causes information leakage
Summary
A vulnerability was found in Undertow where the ProxyProtocolReadListener reuses the same StringBuilder instance across multiple requests. This issue occurs when the parseProxyProtocolV1 method processes multiple requests on the same HTTP connection. As a result, different requests may share the same StringBuilder instance, potentially leading to information leakage between requests or responses. In some cases, a value from a previous request or response may be erroneously reused, which could lead to unintended data exposure. This issue primarily results in errors and connection termination but creates a risk of data leakage in multi-request environments.
Severity ?
7.5 (High)
CWE
- CWE-362 - Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')
Assigner
References
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Impacted products
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|
Affected:
0 , < 2.2.36.Final
(custom)
Affected: 2.3.0.Alpha1 , < 2.3.17.Final (custom) |
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Credits
Red Hat would like to thank BfC for reporting this issue.
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CVE-2024-1132 (GCVE-0-2024-1132)
Vulnerability from cvelistv5 – Published: 2024-04-17 13:21 – Updated: 2025-11-07 20:40
VLAI?
Title
Keycloak: path transversal in redirection validation
Summary
A flaw was found in Keycloak, where it does not properly validate URLs included in a redirect. This issue could allow an attacker to construct a malicious request to bypass validation and access other URLs and sensitive information within the domain or conduct further attacks. This flaw affects any client that utilizes a wildcard in the Valid Redirect URIs field, and requires user interaction within the malicious URL.
Severity ?
8.1 (High)
CWE
- CWE-22 - Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
Assigner
References
| URL | Tags | |||||||||||||||||||||||||||||||||||||||||||
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|
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Impacted products
| Vendor | Product | Version | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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|
Affected:
21.1.0 , < 22.0.10
(semver)
Affected: 23.0.0 , < 24.0.3 (semver) |
||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
|
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Credits
Red Hat would like to thank Axel Flamcourt for reporting this issue.
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CVE-2024-1635 (GCVE-0-2024-1635)
Vulnerability from cvelistv5 – Published: 2024-02-19 21:23 – Updated: 2025-11-07 20:40
VLAI?
Title
Undertow: out-of-memory error after several closed connections with wildfly-http-client protocol
Summary
A vulnerability was found in Undertow. This vulnerability impacts a server that supports the wildfly-http-client protocol. Whenever a malicious user opens and closes a connection with the HTTP port of the server and then closes the connection immediately, the server will end with both memory and open file limits exhausted at some point, depending on the amount of memory available.
At HTTP upgrade to remoting, the WriteTimeoutStreamSinkConduit leaks connections if RemotingConnection is closed by Remoting ServerConnectionOpenListener. Because the remoting connection originates in Undertow as part of the HTTP upgrade, there is an external layer to the remoting connection. This connection is unaware of the outermost layer when closing the connection during the connection opening procedure. Hence, the Undertow WriteTimeoutStreamSinkConduit is not notified of the closed connection in this scenario. Because WriteTimeoutStreamSinkConduit creates a timeout task, the whole dependency tree leaks via that task, which is added to XNIO WorkerThread. So, the workerThread points to the Undertow conduit, which contains the connections and causes the leak.
Severity ?
7.5 (High)
CWE
- CWE-400 - Uncontrolled Resource Consumption
Assigner
References
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Impacted products
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|
Affected:
1.31.0
|
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CVE-2023-6291 (GCVE-0-2023-6291)
Vulnerability from cvelistv5 – Published: 2024-01-26 14:23 – Updated: 2025-11-11 16:12
VLAI?
Title
Keycloak: redirect_uri validation bypass
Summary
A flaw was found in the redirect_uri validation logic in Keycloak. This issue may allow a bypass of otherwise explicitly allowed hosts. A successful attack may lead to an access token being stolen, making it possible for the attacker to impersonate other users.
Severity ?
7.1 (High)
CWE
- CWE-601 - URL Redirection to Untrusted Site ('Open Redirect')
Assigner
References
| URL | Tags | |||||||||||||||||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
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Impacted products
| Vendor | Product | Version | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Red Hat | Red Hat build of Keycloak 22 |
Unaffected:
22.0.7-1 , < *
(rpm)
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CVE-2023-2585 (GCVE-0-2023-2585)
Vulnerability from cvelistv5 – Published: 2023-12-21 09:24 – Updated: 2024-08-02 06:26
VLAI?
Title
Keycloak: client access via device auth request spoof
Summary
Keycloak's device authorization grant does not correctly validate the device code and client ID. An attacker client could abuse the missing validation to spoof a client consent request and trick an authorization admin into granting consent to a malicious OAuth client or possible unauthorized access to an existing OAuth client.
Severity ?
CWE
- CWE-358 - Improperly Implemented Security Check for Standard
Assigner
References
| URL | Tags | ||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
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Impacted products
| Vendor | Product | Version | ||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Red Hat | Red Hat Single Sign-On 7 |
cpe:/a:redhat:red_hat_single_sign_on:7.6.4 |
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CVE-2023-6927 (GCVE-0-2023-6927)
Vulnerability from cvelistv5 – Published: 2023-12-18 22:59 – Updated: 2025-11-11 15:55
VLAI?
Title
Keycloak: open redirect via "form_post.jwt" jarm response mode
Summary
A flaw was found in Keycloak. This issue may allow an attacker to steal authorization codes or tokens from clients using a wildcard in the JARM response mode "form_post.jwt" which could be used to bypass the security patch implemented to address CVE-2023-6134.
Severity ?
4.6 (Medium)
CWE
- CWE-601 - URL Redirection to Untrusted Site ('Open Redirect')
Assigner
References
| URL | Tags | |||||||||||||||||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
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Impacted products
| Vendor | Product | Version | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Red Hat | Red Hat build of Keycloak 22 |
Unaffected:
22-7 , < *
(rpm)
cpe:/a:redhat:build_keycloak:22::el9 |
|||||||||||||||||||||||||||||||||||||||||||||||||||||||||
|
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Credits
Red Hat would like to thank Pontus Hanssen (Pontus.Hanssen@omegapoint.se) for reporting this issue.
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CVE-2023-48795 (GCVE-0-2023-48795)
Vulnerability from cvelistv5 – Published: 2023-12-18 00:00 – Updated: 2025-11-04 22:05
VLAI?
Summary
The SSH transport protocol with certain OpenSSH extensions, found in OpenSSH before 9.6 and other products, allows remote attackers to bypass integrity checks such that some packets are omitted (from the extension negotiation message), and a client and server may consequently end up with a connection for which some security features have been downgraded or disabled, aka a Terrapin attack. This occurs because the SSH Binary Packet Protocol (BPP), implemented by these extensions, mishandles the handshake phase and mishandles use of sequence numbers. For example, there is an effective attack against SSH's use of ChaCha20-Poly1305 (and CBC with Encrypt-then-MAC). The bypass occurs in chacha20-poly1305@openssh.com and (if CBC is used) the -etm@openssh.com MAC algorithms. This also affects Maverick Synergy Java SSH API before 3.1.0-SNAPSHOT, Dropbear through 2022.83, Ssh before 5.1.1 in Erlang/OTP, PuTTY before 0.80, AsyncSSH before 2.14.2, golang.org/x/crypto before 0.17.0, libssh before 0.10.6, libssh2 through 1.11.0, Thorn Tech SFTP Gateway before 3.4.6, Tera Term before 5.1, Paramiko before 3.4.0, jsch before 0.2.15, SFTPGo before 2.5.6, Netgate pfSense Plus through 23.09.1, Netgate pfSense CE through 2.7.2, HPN-SSH through 18.2.0, ProFTPD before 1.3.8b (and before 1.3.9rc2), ORYX CycloneSSH before 2.3.4, NetSarang XShell 7 before Build 0144, CrushFTP before 10.6.0, ConnectBot SSH library before 2.2.22, Apache MINA sshd through 2.11.0, sshj through 0.37.0, TinySSH through 20230101, trilead-ssh2 6401, LANCOM LCOS and LANconfig, FileZilla before 3.66.4, Nova before 11.8, PKIX-SSH before 14.4, SecureCRT before 9.4.3, Transmit5 before 5.10.4, Win32-OpenSSH before 9.5.0.0p1-Beta, WinSCP before 6.2.2, Bitvise SSH Server before 9.32, Bitvise SSH Client before 9.33, KiTTY through 0.76.1.13, the net-ssh gem 7.2.0 for Ruby, the mscdex ssh2 module before 1.15.0 for Node.js, the thrussh library before 0.35.1 for Rust, and the Russh crate before 0.40.2 for Rust.
Severity ?
5.9 (Medium)
CWE
- n/a
Assigner
References
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CVE-2023-6134 (GCVE-0-2023-6134)
Vulnerability from cvelistv5 – Published: 2023-12-14 21:42 – Updated: 2025-11-11 16:25
VLAI?
Title
Keycloak: reflected xss via wildcard in oidc redirect_uri
Summary
A flaw was found in Keycloak that prevents certain schemes in redirects, but permits them if a wildcard is appended to the token. This issue could allow an attacker to submit a specially crafted request leading to cross-site scripting (XSS) or further attacks. This flaw is the result of an incomplete fix for CVE-2020-10748.
Severity ?
4.6 (Medium)
CWE
- CWE-79 - Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
Assigner
References
| URL | Tags | |||||||||||||||||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
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Impacted products
| Vendor | Product | Version | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Red Hat | Red Hat build of Keycloak 22 |
Unaffected:
22.0.7-1 , < *
(rpm)
cpe:/a:redhat:build_keycloak:22::el9 |
||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
|
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Credits
Red Hat would like to thank Lauritz Holtmann (https://security.lauritz-holtmann.de/) for reporting this issue.
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CVE-2023-6563 (GCVE-0-2023-6563)
Vulnerability from cvelistv5 – Published: 2023-12-14 18:01 – Updated: 2025-11-11 15:10
VLAI?
Title
Keycloak: offline session token dos
Summary
An unconstrained memory consumption vulnerability was discovered in Keycloak. It can be triggered in environments which have millions of offline tokens (> 500,000 users with each having at least 2 saved sessions). If an attacker creates two or more user sessions and then open the "consents" tab of the admin User Interface, the UI attempts to load a huge number of offline client sessions leading to excessive memory and CPU consumption which could potentially crash the entire system.
Severity ?
7.7 (High)
CWE
- CWE-770 - Allocation of Resources Without Limits or Throttling
Assigner
References
| URL | Tags | |||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
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Impacted products
| Vendor | Product | Version | ||||||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Red Hat | Red Hat Single Sign-On 7.6 for RHEL 7 |
Unaffected:
0:18.0.11-2.redhat_00003.1.el7sso , < *
(rpm)
cpe:/a:redhat:red_hat_single_sign_on:7.6::el7 |
||||||||||||||||||||||||||||||||
|
||||||||||||||||||||||||||||||||||
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