Riskcovery

CVE-2026-3307

Authorization bypass in GitHub Enterprise Server secret scanning push protection allows cross-repository modification of delegated bypass reviewers

State
Published
Severity
5.3 Medium
Published
Apr 21, 2026
Updated
Apr 22, 2026
Reserved
Feb 26, 2026

Read the record on cve.org

Description

An authorization bypass vulnerability was identified in GitHub Enterprise Server that allowed an attacker with admin access on one repository to modify the secret scanning push protection delegated bypass reviewer list on another repository by manipulating the owner_id parameter in the request body. Authorization was verified against the repository in the URL, but the action was applied to a different repository specified in the request body. The impact is limited to assigning existing trusted users as bypass reviewers; it does not allow adding arbitrary external users. This vulnerability affected all versions of GitHub Enterprise Server prior to 3.21 and was fixed in versions 3.14.25, 3.15.20, 3.16.16, 3.17.13, 3.18.7, 3.19.4 and 3.20.1. This vulnerability was reported via the GitHub Bug Bounty program.

Scores

CVSSScoreVectorSource
4.05.3 MediumCVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:NGitHub_P

Weaknesses

  • CWE-639 Authorization Bypass Through User-Controlled Key

Affected Products

ProductVersions
Enterprise ServerGitHub
  • 3.14.0 through 3.14.24Affectedfrom 3.14.25Not affected
  • 3.15.0 through 3.15.19Affectedfrom 3.15.20Not affected
  • 3.16.0 through 3.16.15Affectedfrom 3.16.16Not affected
  • 3.17.0 through 3.17.12Affectedfrom 3.17.13Not affected
  • 3.18.0 through 3.18.6Affectedfrom 3.18.7Not affected
  • 3.19.0 through 3.19.3Affectedfrom 3.19.4Not affected
  • 3.20 through 3.20.0Affectedfrom 3.20.1Not affected

References

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