Common Weakness Enumeration
CWE-295
AllowedImproper Certificate Validation
Abstraction: Base · Status: Draft
The product does not validate, or incorrectly validates, a certificate.
2039 vulnerabilities reference this CWE, most recent first.
CVE-2026-48247 (GCVE-0-2026-48247)
Vulnerability from cvelistv5 – Published: 2026-05-21 17:11 – Updated: 2026-07-28 01:49
VLAI
EPSS
VEX
Title
Open ISES Tickets < 3.44.2 Disabled TLS Certificate Verification in incs/functions.inc.php
Summary
Open ISES Tickets before 3.44.2 disables TLS certificate verification in incs/functions.inc.php by setting CURLOPT_SSL_VERIFYPEER to false (and not setting CURLOPT_SSL_VERIFYHOST) when issuing outbound HTTPS requests for general-purpose outbound HTTPS requests issued by the shared helper functions. An attacker positioned on the network path between the server and the remote endpoint can present a forged certificate to intercept, monitor, or modify the request and response, including any API keys or session-bearing data in transit.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-05-21 18:05 UTC
CWE
- CWE-295 - Improper Certificate Validation
Assigner
References
3 references
| URL | Tags |
|---|---|
| https://github.com/openises/tickets/releases/tag/… | release-notes |
| https://github.com/openises/tickets/commit/ecfeb4… | patch |
| https://www.vulncheck.com/advisories/open-ises-ti… | third-party-advisory |
Impacted products
Date Public
2026-04-02 00:00
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CVE-2026-48246 (GCVE-0-2026-48246)
Vulnerability from cvelistv5 – Published: 2026-05-21 17:11 – Updated: 2026-07-28 01:49
VLAI
EPSS
VEX
Title
Open ISES Tickets < 3.44.2 Disabled TLS Certificate Verification in ajax/reports.php
Summary
Open ISES Tickets before 3.44.2 disables TLS certificate verification in ajax/reports.php by setting CURLOPT_SSL_VERIFYPEER to false (and not setting CURLOPT_SSL_VERIFYHOST) when issuing outbound HTTPS requests for Google Maps Directions API lookups during incident report generation. An attacker positioned on the network path between the server and the remote endpoint can present a forged certificate to intercept, monitor, or modify the request and response, including any API keys or session-bearing data in transit.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-05-21 18:05 UTC
CWE
- CWE-295 - Improper Certificate Validation
Assigner
References
3 references
| URL | Tags |
|---|---|
| https://github.com/openises/tickets/releases/tag/… | release-notes |
| https://github.com/openises/tickets/commit/ecfeb4… | patch |
| https://www.vulncheck.com/advisories/open-ises-ti… | third-party-advisory |
Impacted products
Date Public
2026-04-02 00:00
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CVE-2026-48021 (GCVE-0-2026-48021)
Vulnerability from cvelistv5 – Published: 2026-07-24 18:26 – Updated: 2026-07-25 00:57
VLAI
EPSS
VEX
Title
epa4all Security Incident: Implement keystore based on Telematik TSL, implement hostname check and certificate check for lib-vau
Summary
In epa4all, prior to version 2026-05-20, an attacker who can intercept the TLS connection between epa4all and the ePA backend can complete the VAU handshake with attacker-controlled keys and obtain the session encryption keys. All inner HTTP traffic (patient consent decisions, medication data, document operations, authorization tokens, and entitlement queries) becomes readable and modifiable. The attacker can also inject arbitrary requests through the hijacked channel. This issue has been patched in version 2026-05-20.
Severity
9.1 (Critical)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-07-25 00:56 UTC
CWE
Assigner
References
3 references
| URL | Tags |
|---|---|
| https://github.com/med-united/epa4all/security/ad… | x_refsource_CONFIRM |
| https://github.com/med-united/epa4all/releases/ta… | x_refsource_MISC |
| https://www.machinespirits.com/advisory/aa49f0 | x_refsource_MISC |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| med-united | epa4all |
Affected:
< 2026-05-20
|
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CVE-2026-47632 (GCVE-0-2026-47632)
Vulnerability from cvelistv5 – Published: 2026-07-14 17:05 – Updated: 2026-08-31 15:25
VLAI
EPSS
VEX
Title
Azure Connected Machine Agent Elevation of Privilege Vulnerability
Summary
Improper certificate validation in Azure Connected Machine Agent allows an unauthorized attacker to elevate privileges over an adjacent network.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-07-15 03:57 UTC
CWE
- CWE-295 - Improper Certificate Validation
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://msrc.microsoft.com/update-guide/vulnerabi… | vendor-advisorypatch |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Microsoft | Azure Connected Machine Agent |
Affected:
1.0.0 , < 1.65
(custom)
cpe:2.3:a:microsoft:azure_connected_machine_agent:*:*:*:*:*:*:*:* |
Date Public
2026-07-14 14:00
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CVE-2026-47074 (GCVE-0-2026-47074)
Vulnerability from cvelistv5 – Published: 2026-05-28 09:05 – Updated: 2026-05-29 04:40
VLAI
EPSS
VEX
Title
ex_aws_sns SigningCertURL not validated in verify_message/1
Summary
Improper Certificate Validation vulnerability in ex-aws ex_aws_sns (ExAws.SNS, ExAws.SNS.PublicKeyCache modules) allows Signature Spoofing by Improper Validation.
This vulnerability is associated with program files lib/ex_aws/sns.ex, lib/ex_aws/sns/public_key_cache.ex and program routines 'Elixir.ExAws.SNS':verify_message/1, 'Elixir.ExAws.SNS.PublicKeyCache':get/1.
'Elixir.ExAws.SNS':verify_message/1 fetches the signing certificate from the SigningCertURL field of the incoming SNS message without validating that the URL uses HTTPS or that the host matches an AWS-owned SNS certificate domain. An unauthenticated attacker who can POST to an endpoint that calls verify_message/1 can supply an attacker-controlled SigningCertURL, sign a forged SNS message with their own key, and cause the function to return :ok, completely bypassing SNS signature verification.
This issue affects ex_aws_sns: from 2.0.1 before 2.3.5.
Severity
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-05-28 10:29 UTC
CWE
- CWE-295 - Improper Certificate Validation
Assigner
References
4 references
| URL | Tags |
|---|---|
| https://github.com/ex-aws/ex_aws_sns/security/adv… | vendor-advisoryrelated |
| https://cna.erlef.org/cves/CVE-2026-47074.html | related |
| https://osv.dev/vulnerability/EEF-CVE-2026-47074 | related |
| https://github.com/ex-aws/ex_aws_sns/commit/1853d… | patch |
Impacted products
2 products
| Vendor | Product | Version | |
|---|---|---|---|
| ex-aws | ex_aws_sns |
Affected:
2.0.1 , < 2.3.5
(semver)
cpe:2.3:a:ex_aws_sns_project:ex_aws_sns:*:*:*:*:*:*:*:* |
|
| ex-aws | ex_aws_sns |
Affected:
a7ec21880943f4dac1d59bda557db0ffcd2b61fa , < 1853d280b152d10384a1e21a22cf22152a60be48
(git)
cpe:2.3:a:ex_aws_sns_project:ex_aws_sns:*:*:*:*:*:*:*:* |
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CVE-2026-46734 (GCVE-0-2026-46734)
Vulnerability from cvelistv5 – Published: 2026-06-25 13:43 – Updated: 2026-06-26 03:55
VLAI
EPSS
VEX
Summary
Dell Display and Peripheral Manager (DDPM Mac), versions prior to 2.3, contain an Improper Certificate Validation vulnerability. A low privileged attacker with local access could potentially exploit this vulnerability, leading to Protection mechanism bypass.
Severity
7.3 (High)
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-06-25 00:00 UTC
CWE
- CWE-295 - Improper Certificate Validation
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://www.dell.com/support/kbdoc/en-hk/00047565… | vendor-advisory |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Dell | Display and Peripheral Manager |
Affected:
0 , < Version 2.3 and later
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Date Public
2026-06-16 06:30
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CVE-2026-46428 (GCVE-0-2026-46428)
Vulnerability from cvelistv5 – Published: 2026-07-20 15:37 – Updated: 2026-07-21 15:49
VLAI
EPSS
VEX
Title
lettre has TLS hostname verification disabled when using Boring TLS backend
Summary
lettre is a a mailer library for Rust. Starting in version 0.10.1 and prior to version 0.11.22, an inverted-boolean bug in lettre's `boring-tls` integration silently disables TLS hostname verification for callers using the default (strict) configuration. An on-path attacker presenting any chain-valid certificate for any domain can intercept SMTP submission, including PLAIN/LOGIN credentials and message contents, against any lettre user built with the `boring-tls` feature. Other TLS backends (`native-tls`, `rustls`) are unaffected. Version 0.11.22 patches the issue.
Severity
SSVC
Exploitation: poc
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-07-21 15:48 UTC
CWE
- CWE-295 - Improper Certificate Validation
Assigner
References
4 references
| URL | Tags |
|---|---|
| https://github.com/lettre/lettre/security/advisor… | x_refsource_CONFIRM |
| https://github.com/lettre/lettre/commit/f5efffc88… | x_refsource_MISC |
| https://github.com/lettre/lettre/releases/tag/v0.11.22 | x_refsource_MISC |
| https://rustsec.org/advisories/RUSTSEC-2026-0141.html | x_refsource_MISC |
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CVE-2026-45745 (GCVE-0-2026-45745)
Vulnerability from cvelistv5 – Published: 2026-06-05 17:53 – Updated: 2026-06-10 03:58
VLAI
EPSS
VEX
Title
Termix has improper certificate validation in Electron desktop client that enables MITM credential/token theft
Summary
Termix is a web-based server management platform with SSH terminal, tunneling, and file editing capabilities. Starting in version 1.7.0, Termix Desktop (Electron) disables TLS certificate validation, allowing a machine-in-the-middle attacker to intercept and modify HTTPS traffic to the configured Termix server. This can lead to credential theft and JWT/session theft during login and normal use. As of time of publication, no known patched versions are available.
Severity
SSVC
Exploitation: poc
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-06-09 00:00 UTC
CWE
- CWE-295 - Improper Certificate Validation
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://github.com/Termix-SSH/Termix/security/adv… | x_refsource_CONFIRM |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Termix-SSH | Termix |
Affected:
>= 1.7.0, <= 2.2.1
|
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CVE-2026-45574 (GCVE-0-2026-45574)
Vulnerability from cvelistv5 – Published: 2026-05-26 21:03 – Updated: 2026-05-27 13:21
VLAI
EPSS
VEX
Title
epa4all-client: TLS Certificate Validation Disabled in Production
Summary
epa4all-client is the Java Client for epa4all / ePA 3.0 in the Telematik Infrastruktur. Prior to 1.2.2, an attacker on the network path between the ePA service and the Konnektor can present any TLS certificate (self-signed, expired, wrong CN) and intercept all SOAP traffic. This includes patient identifiers (KVNR), SMC-B card operations (authentication, signing), document content, and credential exchanges. This vulnerability is fixed in 1.2.2.
Severity
8.1 (High)
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-05-27 13:20 UTC
CWE
- CWE-295 - Improper Certificate Validation
Assigner
References
2 references
| URL | Tags |
|---|---|
| https://github.com/oviva-ag/epa4all-client/securi… | x_refsource_CONFIRM |
| https://github.com/oviva-ag/epa4all-client/pull/36 | x_refsource_MISC |
Impacted products
2 products
| Vendor | Product | Version | |
|---|---|---|---|
| oviva-ag | epa4all-client |
Affected:
< 1.2.2
|
|
| com.oviva.telematik | epa4all-client |
Affected:
< 1.2.2
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CVE-2026-45175 (GCVE-0-2026-45175)
Vulnerability from cvelistv5 – Published: 2026-06-11 18:57 – Updated: 2026-06-13 03:55
VLAI
EPSS
VEX
Title
Idira Endpoint Privilege Manager Agent: Security Control and Cryptographic Validation Bypass in Internal Agent Validation Processes
Summary
Idira Endpoint Privilege Manager Agent versions prior to 26.5 exhibit improper access control within internal agent validation processes. A local attacker could potentially bypass built-in security controls or cryptographic validations. Under specific circumstances, this could allow the attacker to circumvent agent self-defense mechanisms and execute unauthorized operations. CyberArk Security Bulletin: CA26-19
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-06-12 00:00 UTC
CWE
- CWE-295 - Improper Certificate Validation
Assigner
References
3 references
| URL | Tags |
|---|---|
| https://docs.cyberark.com/epm/latest/en/content/r… | vendor-advisory |
| https://docs.cyberark.com/epm/latest/en/content/r… | vendor-advisory |
| https://docs.cyberark.com/epm/latest/en/content/r… | vendor-advisory |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| CyberArk Software, a Palo Alto Networks Company | Idira Endpoint Privilege Manager |
Affected:
26.0 , < 26.5
(custom)
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Date Public
2026-06-11 17:10
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Mitigation
Architecture and Design
Implementation
Certificates should be carefully managed and checked to assure that data are encrypted with the intended owner's public key.
Mitigation
Implementation
If certificate pinning is being used, ensure that all relevant properties of the certificate are fully validated before the certificate is pinned, including the hostname.
CAPEC-459: Creating a Rogue Certification Authority Certificate
An adversary exploits a weakness resulting from using a hashing algorithm with weak collision resistance to generate certificate signing requests (CSR) that contain collision blocks in their "to be signed" parts. The adversary submits one CSR to be signed by a trusted certificate authority then uses the signed blob to make a second certificate appear signed by said certificate authority. Due to the hash collision, both certificates, though different, hash to the same value and so the signed blob works just as well in the second certificate. The net effect is that the adversary's second X.509 certificate, which the Certification Authority has never seen, is now signed and validated by that Certification Authority.
CAPEC-475: Signature Spoofing by Improper Validation
An adversary exploits a cryptographic weakness in the signature verification algorithm implementation to generate a valid signature without knowing the key.