Common Weakness Enumeration
CWE-863
Allowed-with-ReviewIncorrect Authorization
Abstraction: Class · Status: Incomplete
The product performs an authorization check when an actor attempts to access a resource or perform an action, but it does not correctly perform the check.
5537 vulnerabilities reference this CWE, most recent first.
CVE-2026-28790 (GCVE-0-2026-28790)
Vulnerability from cvelistv5 – Published: 2026-03-05 19:34 – Updated: 2026-03-06 17:57
VLAI
EPSS
VEX
Title
OliveTin: Unauthenticated Action Termination via KillAction When Guests Must Login
Summary
OliveTin gives access to predefined shell commands from a web interface. Prior to version 3000.11.0, OliveTin allows an unauthenticated guest to terminate running actions through KillAction even when authRequireGuestsToLogin: true is enabled. Guests are correctly blocked from dashboard access, but can still call the KillAction RPC directly and successfully stop a running action. This is a broken access control issue that causes unauthorized denial of service against legitimate action executions. This issue has been patched in version 3000.11.0.
Severity
7.5 (High)
SSVC
Exploitation: poc
Automatable: yes
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
Assigner
References
3 references
| URL | Tags |
|---|---|
| https://github.com/OliveTin/OliveTin/security/adv… | x_refsource_CONFIRM |
| https://github.com/OliveTin/OliveTin/commit/d9804… | x_refsource_MISC |
| https://github.com/OliveTin/OliveTin/releases/tag… | x_refsource_MISC |
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CVE-2026-28759 (GCVE-0-2026-28759)
Vulnerability from cvelistv5 – Published: 2026-05-18 06:50 – Updated: 2026-05-18 14:36
VLAI
EPSS
VEX
Title
Insufficient authorization in shared channel membership sync allows remote cluster to remove users from arbitrary channels
Summary
Mattermost versions 11.5.x <= 11.5.1, 10.11.x <= 10.11.13, 11.4.x <= 11.4.3 fail to validate that a remote cluster has access to a channel before processing membership removal requests during shared channel membership sync, which allows a malicious remote cluster to remove any user from any channel, including private channels, via crafted membership sync messages targeting channels the remote cluster is not authorized to access. Mattermost Advisory ID: MMSA-2026-00576
Severity
4.3 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- CWE-863 - Incorrect Authorization
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://mattermost.com/security-updates | vendor-advisory |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Mattermost | Mattermost |
Affected:
11.5.0 , ≤ 11.5.1
(semver)
Affected: 10.11.0 , ≤ 10.11.13 (semver) Affected: 11.4.0 , ≤ 11.4.3 (semver) Unaffected: 11.6.0 Unaffected: 11.5.2 Unaffected: 10.11.14 Unaffected: 11.4.4 |
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CVE-2026-28755 (GCVE-0-2026-28755)
Vulnerability from cvelistv5 – Published: 2026-03-24 14:13 – Updated: 2026-03-24 15:24
VLAI
EPSS
VEX
Title
NGINX ngx_stream_ssl_module vulnerability
Summary
NGINX Plus and NGINX Open Source have a vulnerability in the ngx_stream_ssl_module module due to the improper handling of revoked certificates when configured with the ssl_verify_client on and ssl_ocsp on directives, allowing the TLS handshake to succeed even after an OCSP check identifies the certificate as revoked.
Note: Software versions which have reached End of Technical Support (EoTS) are not evaluated.
Severity
5.4 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- CWE-863 - Incorrect Authorization
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://my.f5.com/manage/s/article/K000160368 | vendor-advisory |
Impacted products
2 products
| Vendor | Product | Version | |
|---|---|---|---|
| F5 | NGINX Open Source |
Affected:
1.29.0 , < 1.29.7
(semver)
Affected: 1.27.2 , < 1.28.3 (semver) |
|
| F5 | NGINX Plus |
Affected:
R36 , < R36 P3
(custom)
Affected: R35 , < R35 P2 (custom) Affected: R34 , < * (custom) Affected: R33 , < * (custom) |
Date Public
2026-03-24 14:00
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CVE-2026-28744 (GCVE-0-2026-28744)
Vulnerability from cvelistv5 – Published: 2026-07-03 20:19 – Updated: 2026-07-06 15:17
VLAI
EPSS
VEX
Title
Gitea Git smart HTTP bypasses repository token scopes for bearer tokens
Summary
Gitea versions up to and including 1.26.1 allow Git smart HTTP requests authenticated with bearer tokens to bypass repository token scope checks.
Severity
8.1 (High)
SSVC
Exploitation: poc
Automatable: no
Technical Impact: total
CISA Coordinator (v2.0.3)
CWE
Assigner
References
4 references
| URL | Tags |
|---|---|
| https://github.com/go-gitea/gitea/security/adviso… | vendor-advisory |
| https://github.com/go-gitea/gitea/pull/37583 | patch |
| https://github.com/go-gitea/gitea/releases/tag/v1.26.2 | release-notes |
| https://blog.gitea.com/release-of-1.26.2/ | release-notes |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Gitea | Gitea Open Source Git Server |
Affected:
0 , ≤ 1.26.1
(semver)
|
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CVE-2026-28740 (GCVE-0-2026-28740)
Vulnerability from cvelistv5 – Published: 2026-07-03 20:19 – Updated: 2026-07-07 16:58
VLAI
EPSS
VEX
Title
Gitea LFS object reuse bypasses Code-unit authorization
Summary
Gitea versions up to and including 1.26.2 allow Git LFS object reuse to authorize private source objects for users who have repository access but lack Code-unit access.
Severity
7.1 (High)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator (v2.0.3)
Assigner
References
4 references
| URL | Tags |
|---|---|
| https://github.com/go-gitea/gitea/security/adviso… | vendor-advisory |
| https://github.com/go-gitea/gitea/pull/38050 | patch |
| https://github.com/go-gitea/gitea/releases/tag/v1.26.3 | release-notes |
| https://blog.gitea.com/release-of-1.26.3-and-1.26.4/ | release-notes |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Gitea | Gitea Open Source Git Server |
Affected:
0 , ≤ 1.26.2
(semver)
|
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CVE-2026-28735 (GCVE-0-2026-28735)
Vulnerability from cvelistv5 – Published: 2026-05-22 16:26 – Updated: 2026-05-22 16:56
VLAI
EPSS
VEX
Title
GitHub OAuth Scope Validation
Summary
Mattermost versions 11.6.x <= 11.6.0, 11.5.x <= 11.5.3, 11.4.x <= 11.4.4, 10.11.x <= 10.11.14 fail to validate the OAuth token scope on the callback which allows an authenticated Mattermost user to gain access to private repositories via modifying the scope parameter in the GitHub authorization URL.. Mattermost Advisory ID: MMSA-2026-00628
Severity
5.4 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- CWE-863 - Incorrect Authorization
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://mattermost.com/security-updates | vendor-advisory |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Mattermost | Mattermost |
Affected:
11.6.0 , ≤ 11.6.0
(semver)
Affected: 11.5.0 , ≤ 11.5.3 (semver) Affected: 11.4.0 , ≤ 11.4.4 (semver) Affected: 10.11.0 , ≤ 10.11.14 (semver) Unaffected: 11.7.0 Unaffected: 11.6.1 Unaffected: 11.5.4 Unaffected: 11.4.5 Unaffected: 10.11.15 |
Credits
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CVE-2026-28732 (GCVE-0-2026-28732)
Vulnerability from cvelistv5 – Published: 2026-05-18 08:35 – Updated: 2026-05-18 14:37
VLAI
EPSS
VEX
Title
Slash command trigger-word update allowed command hijacking
Summary
Mattermost versions 11.5.x <= 11.5.1, 10.11.x <= 10.11.13, 11.4.x <= 11.4.3 Fail to enforce slash command trigger-word uniqueness during command updates which allows an authenticated team member with Manage Own Slash Commands permission to hijack and impersonate existing system or custom slash commands via editing their own slash command trigger to an already-registered trigger through the command update API. Mattermost Advisory ID: MMSA-2026-00597
Severity
4.3 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- CWE-863 - Incorrect Authorization
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://mattermost.com/security-updates | vendor-advisory |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Mattermost | Mattermost |
Affected:
11.5.0 , ≤ 11.5.1
(semver)
Affected: 10.11.0 , ≤ 10.11.13 (semver) Affected: 11.4.0 , ≤ 11.4.3 (semver) Unaffected: 11.6.0 Unaffected: 11.5.2 Unaffected: 10.11.14 Unaffected: 11.4.4 |
Credits
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CVE-2026-28726 (GCVE-0-2026-28726)
Vulnerability from cvelistv5 – Published: 2026-03-05 23:57 – Updated: 2026-03-06 19:33
VLAI
EPSS
VEX
Summary
Sensitive information disclosure due to improper access control. The following products are affected: Acronis Cyber Protect 17 (Linux, Windows) before build 41186.
Severity
4.3 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://security-advisory.acronis.com/advisories/… | vendor-advisory |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Acronis | Acronis Cyber Protect 17 |
Affected:
unspecified , < 41186
(semver)
|
Credits
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CVE-2026-28724 (GCVE-0-2026-28724)
Vulnerability from cvelistv5 – Published: 2026-03-05 23:55 – Updated: 2026-03-06 19:34
VLAI
EPSS
VEX
Summary
Unauthorized data access due to insufficient access control validation. The following products are affected: Acronis Cyber Protect 17 (Linux, Windows) before build 41186.
Severity
4.3 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://security-advisory.acronis.com/advisories/… | vendor-advisory |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Acronis | Acronis Cyber Protect 17 |
Affected:
unspecified , < 41186
(semver)
|
Credits
{
"containers": {
"adp": [
{
"metrics": [
{
"other": {
"content": {
"id": "CVE-2026-28724",
"options": [
{
"Exploitation": "none"
},
{
"Automatable": "no"
},
{
"Technical Impact": "partial"
}
],
"role": "CISA Coordinator",
"timestamp": "2026-03-06T19:29:50.312532Z",
"version": "2.0.3"
},
"type": "ssvc"
}
}
],
"providerMetadata": {
"dateUpdated": "2026-03-06T19:34:04.863Z",
"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"shortName": "CISA-ADP"
},
"title": "CISA ADP Vulnrichment"
}
],
"cna": {
"affected": [
{
"defaultStatus": "unaffected",
"platforms": [
"Linux",
"Windows"
],
"product": "Acronis Cyber Protect 17",
"vendor": "Acronis",
"versions": [
{
"lessThan": "41186",
"status": "affected",
"version": "unspecified",
"versionType": "semver"
}
]
}
],
"credits": [
{
"lang": "en",
"type": "finder",
"value": "@vultza (https://hackerone.com/vultza)"
}
],
"descriptions": [
{
"lang": "en",
"value": "Unauthorized data access due to insufficient access control validation. The following products are affected: Acronis Cyber Protect 17 (Linux, Windows) before build 41186."
}
],
"metrics": [
{
"cvssV3_0": {
"baseScore": 4.3,
"baseSeverity": "MEDIUM",
"vectorString": "CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N",
"version": "3.0"
},
"format": "CVSS",
"scenarios": [
{
"lang": "en",
"value": "GENERAL"
}
]
}
],
"problemTypes": [
{
"descriptions": [
{
"cweId": "CWE-863",
"description": "CWE-863",
"lang": "en",
"type": "CWE"
}
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}
],
"providerMetadata": {
"dateUpdated": "2026-03-05T23:55:51.963Z",
"orgId": "73dc0fef-1c66-4a72-9d2d-0a0f4012c175",
"shortName": "Acronis"
},
"references": [
{
"name": "SEC-8493",
"tags": [
"vendor-advisory"
],
"url": "https://security-advisory.acronis.com/advisories/SEC-8493"
}
]
}
},
"cveMetadata": {
"assignerOrgId": "73dc0fef-1c66-4a72-9d2d-0a0f4012c175",
"assignerShortName": "Acronis",
"cveId": "CVE-2026-28724",
"datePublished": "2026-03-05T23:55:51.963Z",
"dateReserved": "2026-03-03T02:29:03.754Z",
"dateUpdated": "2026-03-06T19:34:04.863Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2"
}
CVE-2026-28723 (GCVE-0-2026-28723)
Vulnerability from cvelistv5 – Published: 2026-03-05 23:55 – Updated: 2026-03-09 16:36
VLAI
EPSS
VEX
Summary
Unauthorized report deletion due to insufficient access control. The following products are affected: Acronis Cyber Protect 17 (Linux, Windows) before build 41186.
Severity
4.3 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://security-advisory.acronis.com/advisories/… | vendor-advisory |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Acronis | Acronis Cyber Protect 17 |
Affected:
unspecified , < 41186
(semver)
|
Credits
{
"containers": {
"adp": [
{
"metrics": [
{
"other": {
"content": {
"id": "CVE-2026-28723",
"options": [
{
"Exploitation": "none"
},
{
"Automatable": "no"
},
{
"Technical Impact": "partial"
}
],
"role": "CISA Coordinator",
"timestamp": "2026-03-09T16:36:39.356318Z",
"version": "2.0.3"
},
"type": "ssvc"
}
}
],
"providerMetadata": {
"dateUpdated": "2026-03-09T16:36:46.071Z",
"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"shortName": "CISA-ADP"
},
"title": "CISA ADP Vulnrichment"
}
],
"cna": {
"affected": [
{
"defaultStatus": "unaffected",
"platforms": [
"Linux",
"Windows"
],
"product": "Acronis Cyber Protect 17",
"vendor": "Acronis",
"versions": [
{
"lessThan": "41186",
"status": "affected",
"version": "unspecified",
"versionType": "semver"
}
]
}
],
"credits": [
{
"lang": "en",
"type": "finder",
"value": "@vultza (https://hackerone.com/vultza)"
}
],
"descriptions": [
{
"lang": "en",
"value": "Unauthorized report deletion due to insufficient access control. The following products are affected: Acronis Cyber Protect 17 (Linux, Windows) before build 41186."
}
],
"metrics": [
{
"cvssV3_0": {
"baseScore": 4.3,
"baseSeverity": "MEDIUM",
"vectorString": "CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N",
"version": "3.0"
},
"format": "CVSS",
"scenarios": [
{
"lang": "en",
"value": "GENERAL"
}
]
}
],
"problemTypes": [
{
"descriptions": [
{
"cweId": "CWE-863",
"description": "CWE-863",
"lang": "en",
"type": "CWE"
}
]
}
],
"providerMetadata": {
"dateUpdated": "2026-03-05T23:55:37.600Z",
"orgId": "73dc0fef-1c66-4a72-9d2d-0a0f4012c175",
"shortName": "Acronis"
},
"references": [
{
"name": "SEC-8486",
"tags": [
"vendor-advisory"
],
"url": "https://security-advisory.acronis.com/advisories/SEC-8486"
}
]
}
},
"cveMetadata": {
"assignerOrgId": "73dc0fef-1c66-4a72-9d2d-0a0f4012c175",
"assignerShortName": "Acronis",
"cveId": "CVE-2026-28723",
"datePublished": "2026-03-05T23:55:37.600Z",
"dateReserved": "2026-03-03T02:29:03.754Z",
"dateUpdated": "2026-03-09T16:36:46.071Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2"
}
Mitigation
Architecture and Design
- Divide the product into anonymous, normal, privileged, and administrative areas. Reduce the attack surface by carefully mapping roles with data and functionality. Use role-based access control (RBAC) [REF-229] to enforce the roles at the appropriate boundaries.
- Note that this approach may not protect against horizontal authorization, i.e., it will not protect a user from attacking others with the same role.
Mitigation
Architecture and Design
Ensure that access control checks are performed related to the business logic. These checks may be different than the access control checks that are applied to more generic resources such as files, connections, processes, memory, and database records. For example, a database may restrict access for medical records to a specific database user, but each record might only be intended to be accessible to the patient and the patient's doctor [REF-7].
Mitigation MIT-4.4
Architecture and Design
Strategy: Libraries or Frameworks
- Use a vetted library or framework that does not allow this weakness to occur or provides constructs that make this weakness easier to avoid.
- For example, consider using authorization frameworks such as the JAAS Authorization Framework [REF-233] and the OWASP ESAPI Access Control feature [REF-45].
Mitigation
Architecture and Design
- For web applications, make sure that the access control mechanism is enforced correctly at the server side on every page. Users should not be able to access any unauthorized functionality or information by simply requesting direct access to that page.
- One way to do this is to ensure that all pages containing sensitive information are not cached, and that all such pages restrict access to requests that are accompanied by an active and authenticated session token associated with a user who has the required permissions to access that page.
Mitigation
System Configuration
Installation
Use the access control capabilities of your operating system and server environment and define your access control lists accordingly. Use a "default deny" policy when defining these ACLs.
No CAPEC attack patterns related to this CWE.