6.5

CVE-2026-9132

Missing authorization vulnerability in GitHub Enterprise Server allowed disclosure of private repository contents via the Copilot pull request diff summary endpoint

A missing authorization vulnerability was identified in GitHub Enterprise Server that allowed an authenticated user to read source code from private repositories they did not have access to. The
   Copilot pull request description diff summary endpoint accepted a cross-repository comparison range and rendered the resulting diff without verifying that the requesting user was authorized to view
   the target repository. Exploitation required an authenticated account on the instance with read access to at least one repository to use as the comparison base. This vulnerability affected all
   versions of GitHub Enterprise Server prior to 3.21 and was fixed in versions 3.17.17, 3.18.11, 3.19.8, and 3.20.4. This vulnerability was reported via the GitHub Bug Bounty program.
Daten sind bereitgestellt durch National Vulnerability Database (NVD)
Github ≫ Enterprise Server Version < 3.17.17
Github ≫ Enterprise Server Version >= 3.18.0 < 3.18.11
Github ≫ Enterprise Server Version >= 3.19.0 < 3.19.8
Github ≫ Enterprise Server Version >= 3.20.0 < 3.20.4
VulnDex Vulnerability Enrichment
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Zu dieser CVE wurde keine Warnung gefunden.
EPSS Metriken
Typ Quelle Score Percentile
EPSS FIRST.org 0.26% 0.171
CVSS Metriken
Quelle Base Score Exploit Score Impact Score Vector String
nvd@nist.gov 6.5 2.8 3.6
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
product-cna@github.com 6 0 0
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
CWE-862 Missing Authorization

The product does not perform an authorization check when an actor attempts to access a resource or perform an action.

https://docs.github.com/en/enterprise-server@3.17/admin/release-notes#3.17.17-features
Release Notes
https://docs.github.com/en/enterprise-server@3.18/admin/release-notes#3.18.11-features
Release Notes
https://docs.github.com/en/enterprise-server@3.19/admin/release-notes#3.19.8-features
Release Notes
https://docs.github.com/en/enterprise-server@3.20/admin/release-notes#3.20.4-features
Release Notes