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CVE-2026-75101— Authorization bypass vulnerability in GitHub Enterprise Server allowed reading of private pull request diffs and patches via repository name collision

一分钟漏洞结论

影响对象
GitHub Enterprise Server
利用判断
尚无明确在野利用证据，仍需结合暴露面评估
建议动作
优先检查厂商安全公告和参考链接中的修复版本；无法立即升级时，限制受影响服务暴露并加强监测。

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 reques

CVSS 6.0 · Medium
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一、 漏洞 CVE-2026-75101 基础信息

漏洞信息

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Vulnerability Title
Authorization bypass vulnerability in GitHub Enterprise Server allowed reading of private pull request diffs and patches via repository name collision
来源: CVE Program / CVE List V5
Vulnerability 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.
来源: CVE Program / CVE List V5
CVSS Information
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
来源: CVE Program / CVE List V5
Vulnerability Type
通过用户控制密钥绕过授权机制
来源: CVE Program / CVE List V5

受影响产品

厂商 产品 影响版本 CPE 订阅
GitHub Enterprise Server 3.17.0 ~ 3.17.* -

二、漏洞 CVE-2026-75101 的公开POC

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三、漏洞 CVE-2026-75101 的情报信息

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CVE-2026-75101 其他参考 (5)

同批安全公告 · GitHub · 2026-09-22 · 共 3 条

CVE-2026-77987 9.3 CRITICAL GitHub Enterprise Server notebook viewer vulnerable to Server-side request forgery
CVE-2026-77912 7.4 HIGH Stored cross-site scripting vulnerability in GitHub Enterprise Server allowed HTML attribu

IV. Related Vulnerabilities

Same product: Enterprise Server
Same vendor: GitHub
Same weakness: CWE-639

V. Comments for CVE-2026-75101

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