CVEvulnerability

CVE-2026-5512

5.3 MEDIUM Published 2026-04-21 Modified 2026-10-26 Official page ↗
Status
Analyzed
Published
2026-04-21
Last modified
2026-10-26
Assigner
[email protected]
CVSS 4.0 ([email protected])
5.3 MEDIUM — CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:L/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])
4.3 MEDIUM — CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N
Weaknesses
CWE-201

Description

An improper authorization vulnerability was identified in GitHub Enterprise Server that allowed an authenticated attacker to determine the names of private repositories by their numeric ID. The mobile upload policy API endpoint did not perform an early authorization check, and validation error messages included the full repository name for repositories the caller did not have access to. This vulnerability affected all versions of GitHub Enterprise Server prior to 3.21 and was fixed in versions 3.20.1, 3.19.5, 3.18.8, 3.17.14, 3.16.17, 3.15.21, and 3.14.26. This vulnerability was reported via the GitHub Bug Bounty program.

Affected configurations

• github enterprise server (< 3.14.26) • github enterprise server (>= 3.15.0 < 3.15.21) • github enterprise server (>= 3.16.0 < 3.16.17) • github enterprise server (>= 3.17.0 < 3.17.14) • github enterprise server (>= 3.18.0 < 3.18.8) • github enterprise server (>= 3.19.0 < 3.19.5) • github enterprise server 3.20.0

Related

Weakness · CWE (1)

  • CWE-201 Insertion of Sensitive Information Into Sent Data weakness

References