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Forgejo CVE-2026-89151

| EUVDEUVD-2026-75922 LOW
Incorrect Authorization (CWE-863)
2026-09-11 mitre GHSA-jxfm-4h2p-76mq
3.5
CVSS 3.1 · Vendor: mitre

Severity by source

Vendor (mitre) PRIMARY
3.5 LOW
AV:N/AC:H/PR:L/UI:N/S:C/C:N/I:L/A:N
vuln.today AI
3.5 LOW

Network API call requires specific restricted-token conditions (AC:H), authenticated low-privilege attacker (PR:L), scope escapes token boundary (S:C), integrity-only impact on PR settings (I:L).

3.1 AV:N/AC:H/PR:L/UI:N/S:C/C:N/I:L/A:N
4.0 AV:N/AC:H/AT:P/PR:L/UI:N/VC:N/VI:N/VA:N/SC:N/SI:L/SA:N

Primary rating from Vendor (mitre).

CVSS VectorVendor: mitre

Attack Vector
Network
Attack Complexity
High
Privileges Required
Low
User Interaction
None
Scope
Changed
Confidentiality
None
Integrity
Low
Availability
None

Lifecycle Timeline

3
Patch available
Sep 11, 2026 - 04:02 EUVD
Metadata Corrected
Sep 11, 2026 - 03:40 vuln.today
tag: Authentication Bypass removed
Analysis Generated
Sep 11, 2026 - 02:59 vuln.today

DescriptionCVE.org

Forgejo before 16.0.4 allows use of restricted API tokens for unintended access to the "allow maintainer edit" feature.

AnalysisAI

Restricted API token authorization bypass in Forgejo before 16.0.4 (and before 15.0.8 on the 15.x branch) allows authenticated users holding limited-scope tokens to invoke the 'allow maintainer edit' pull-request feature beyond those tokens' intended permissions. The flaw is CWE-863 Incorrect Authorization: the endpoint responsible for toggling maintainer-edit access on PRs fails to enforce token scope boundaries, permitting a scoped token to reach an operation it should be barred from. …

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Attack ChainAIDerived

Hypothetical attack flow derived from CVE metadata

Access
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Delivery
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Exploit
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Execution
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Persist
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Impact
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Vulnerability AssessmentAI

Exploitation Exploitation requires an authenticated Forgejo user (PR:L) who holds a restricted (scoped) API token - the bypass is only meaningful when token scope restrictions are configured and the enforcement gap applies. … Additional conditions and limiting factors are described in the full assessment.
Risk Assessment CVSS 3.5 (Low) with vector AV:N/AC:H/PR:L/UI:N/S:C/C:N/I:L/A:N. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in.
Exploit Scenario Full exploit scenario with step-by-step reproduction available after sign-in.
Remediation Upgrade Forgejo to version 16.0.4 or later on the 16.x branch, or to 15.0.8 or later on the 15.x branch, as documented in the Codeberg milestone (codeberg.org/forgejo/forgejo/milestone/139655) and the 15.0.8 release notes. … Detailed patch versions, workarounds, and compensating controls in full report.

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CVE-2026-89151 vulnerability details – vuln.today

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