CVEvulnerability

CVE-2026-75101

6.0 MEDIUM Published 2026-09-22 Modified 2026-10-02 Official page ↗
Status
Analyzed
Published
2026-09-22
Last modified
2026-10-02
Assigner
[email protected]
CVSS 4.0 ([email protected])
6.0 MEDIUM — CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
CVSS 3.1 ([email protected])
6.5 MEDIUM — CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
Weaknesses
CWE-639

Description

An authorization bypass vulnerability was identified in GitHub Enterprise Server that allowed any authenticated user of the instance to read the raw diff or patch of pull requests in private repositories without authorization. Access tokens for raw pull request diffs and patches were scoped to the repository name and pull request number rather than to a globally unique repository identifier, so an attacker who created a repository and pull request matching a target's repository name and pull request number could use a token for their own repository to retrieve the private pull request's contents. Exploitation required the attacker to know the target repository's name and a valid pull request number. This vulnerability affected all versions of GitHub Enterprise Server prior to 3.22 and was fixed in versions 3.17.21, 3.18.15, 3.19.12, 3.20.8, and 3.21.6. This vulnerability was reported via the GitHub Bug Bounty program.

Affected configurations

• github enterprise server (>= 3.17.0 < 3.17.21) • github enterprise server (>= 3.18.0 < 3.18.15) • github enterprise server (>= 3.19.0 < 3.19.12) • github enterprise server (>= 3.20.0 < 3.20.8) • github enterprise server (>= 3.21.0 < 3.21.6)

Related

Weakness · CWE (1)

  • CWE-639 Authorization Bypass Through User-Controlled Key weakness

References