CVE-2026-15783: falha de média gravidade em GitHub Enterprise Server
Missing Authorization vulnerability was identified in GitHub Enterprise Server that allowed reading private repository metadata via delegated bypass rule suites
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13Vexday Risk Score
Sem sinal de exploração. Nenhum artefato público de exploração conhecido até agora.
ssvc Trackcvss 5.3epss 0.4%
A missing authorization vulnerability was identified in GitHub Enterprise Server that allowed an authenticated user with write access to any repository to read metadata from private repositories they did not have access to, including private repository owners and names, branch names, commit SHAs, commit messages, and the pushing actor. The delegated bypass endpoint resolved a rule suite directly from an attacker-supplied, encoded identifier without verifying that the requesting user could read the rule suite's repository, and because these identifiers are sequential an attacker could enumerate them across the instance. This vulnerability affected all versions of GitHub Enterprise Server prior to 3.22 and was fixed in versions 3.17.18, 3.18.12, 3.19.9, 3.20.5, and 3.21.3. This vulnerability was reported via the GitHub Bug Bounty program.
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N
Produtos afetados
GitHub · Enterprise ServerCVEs relacionadas — GitHub Enterprise Server
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Referências
https://docs.github.com/en/enterprise-server@3.17/admin/release-notes#3.17.18https://docs.github.com/en/enterprise-server@3.18/admin/release-notes#3.18.12https://docs.github.com/en/enterprise-server@3.19/admin/release-notes#3.19.9https://docs.github.com/en/enterprise-server@3.20/admin/release-notes#3.20.5https://docs.github.com/en/enterprise-server@3.21/admin/release-notes#3.21.3