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PatchSiren cyber security CVE debrief

CVE-2026-27761 Gitea CVE debrief

CVE-2026-27761 is a medium-severity vulnerability in Gitea versions up to and including 1.26.2. The vulnerability allows repository RSS and Atom feed endpoints to bypass API access token scope checks, exposing private repository commit data to tokens without the required repository scope. This issue affects users of Gitea and requires immediate attention to mitigate potential exposure.

Vendor
Gitea
Product
Gitea Open Source Git Server
CVSS
MEDIUM 4.3
CISA KEV
Not listed in stored evidence
Original CVE published
2026-07-03
Original CVE updated
2026-07-07
Advisory published
2026-07-03
Advisory updated
2026-07-07

Who should care

Users of Gitea versions up to and including 1.26.2, particularly those with private repositories, should be aware of this vulnerability and take steps to mitigate it. This includes updating Gitea to a secure version and reviewing API access tokens.

Technical summary

The vulnerability exists in the repository RSS and Atom feed endpoints of Gitea versions up to and including 1.26.2. These endpoints do not properly check API access token scopes, allowing tokens without the required repository scope to access private repository commit data. This could lead to unauthorized access to sensitive information. Affected users should review their API access tokens and ensure they have the required repository scope. Additionally, users should consider updating Gitea to a secure version and monitoring repository RSS and Atom feed endpoints for suspicious activity. Further verification is recommended to confirm affected scope and severity.

Defensive priority

Medium

Recommended defensive actions

  • Update Gitea to version 1.26.3 or later
  • Review and restrict API access tokens to ensure they have the required repository scope
  • Monitor repository RSS and Atom feed endpoints for suspicious activity
  • Confirm whether affected product deployments exist in managed environments and assign an owner for follow-up
  • Review compensating controls for exposed systems while remediation is scheduled and verified
  • Check relevant monitoring, detection, and logs for exposed assets that need extra review
  • Track exceptions, retest remediated assets, and close the item only after evidence is documented

Evidence notes

The CVE record was published on 2026-07-03T21:16:58.937Z and was last modified on 2026-07-07T18:16:37.887Z. The NVD entry is currently Deferred. This information is based on the CVE record and NVD entry. Further verification is recommended to confirm affected scope and severity.

Sources and references

Verified primary and authoritative sources

  • CVE-2026-27761 CVE Program record

    Publisher, destination, and source semantics verified

    URL: https://www.cve.org/CVERecord?id=CVE-2026-27761

    CVE Program - Official CVE Program record with source-provided CVE metadata.

  • CVE-2026-27761 NVD vulnerability detail

    Publisher, destination, and source semantics verified

    URL: https://nvd.nist.gov/vuln/detail/CVE-2026-27761

    NIST National Vulnerability Database - Official NIST NVD detail page and source-specific vulnerability assessment.

Supplemental references

  • Source reference

    Unverified legacy reference

    URL: https://blog.gitea.com/release-of-1.26.3-and-1.26.4/

    88ee5874-cf24-4952-aea0-31affedb7ff2

  • Source reference

    Unverified legacy reference

    URL: https://github.com/go-gitea/gitea/pull/38147

    88ee5874-cf24-4952-aea0-31affedb7ff2

  • Source reference

    Unverified legacy reference

    URL: https://github.com/go-gitea/gitea/releases/tag/v1.26.3

    88ee5874-cf24-4952-aea0-31affedb7ff2

  • Source reference

    Unverified legacy reference

    URL: https://github.com/go-gitea/gitea/security/advisories/GHSA-3pww-vcvm-3gmj

    88ee5874-cf24-4952-aea0-31affedb7ff2

Methodology and review provenance

AI-assisted synthesis based on stored public vulnerability evidence. System validation, approval state, and publication status do not by themselves establish human review of this revision. PatchSiren helps prioritize defensive review and does not prove exposure or remediation on any system.