Gitea
CVE-2026-20736
HIGH
GHSA-hgr3-x44x-33hx
Severity by source
AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
Primary rating from NVD.
CVSS VectorNVD
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
Lifecycle Timeline
3DescriptionCVE.org
Gitea does not properly verify repository context when deleting attachments. A user who previously uploaded an attachment to a repository may be able to delete it after losing access to that repository by making the request through a different repository they can access.
AnalysisAI
Gitea fails to properly validate repository ownership when processing attachment deletion requests, allowing an authenticated attacker to delete files from repositories they no longer have access to by routing deletion requests through a different accessible repository. This authorization bypass affects all users who have uploaded attachments to shared repositories and could result in loss of critical project documentation or resources. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | No special conditions — remote unauthenticated exploitation against default Gitea installations with attachment feature enabled. … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | CVSS 7.5 (HIGH). … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in. |
| Exploit Scenario | An attacker could exploit this vulnerability to compromise the affected system. |
| Remediation | A vendor patch is available — apply it immediately. … Detailed patch versions, workarounds, and compensating controls in full report. |
Recommended ActionAI
Within 24 hours: Inventory all Gitea instances and identify those with attachment functionality in use. …
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Authorization scope bypass in Gitea v1.26.1 and earlier allows authenticated users to use OAuth2/PAT Bearer tokens to pe
Authorization bypass in Gitea versions 1.22.3 through 1.26.1 allows holders of `public-only` access tokens or OAuth gran
Vendor StatusVendor
SUSE
Severity: High| Product | Status |
|---|---|
| openSUSE Leap 15.6 | Fixed |
| SUSE Linux Enterprise Module for Package Hub 15 SP5 | Fixed |
| SUSE Linux Enterprise Module for Package Hub 15 SP6 | Fixed |
| openSUSE Leap 15.5 | Fixed |
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External POC / Exploit Code
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