CVE-2026-10585: fallo de gravedad media en GitHub Enterprise Server
Stored cross-site scripting vulnerability in GitHub Enterprise Server allowed arbitrary JavaScript execution via crafted Discussion titles in the Q&A category
Publicada el · Actualizada el
Aviso por correo cuando entre en el KEV, tenga PoC pública o suba de nota.
13Vexday Risk Score
Sin señal de explotación. Ningún artefacto público de explotación conocido hasta ahora.
ssvc Trackcvss 6.3epss 0.3%
A stored cross-site scripting vulnerability was identified in GitHub Enterprise Server that allowed an authenticated attacker to execute arbitrary JavaScript in another user's browser by injecting a crafted payload into the title of a Discussion in the Q&A category. The AnsweredQuestionStructuredDataComponent did not escape user-controlled Discussion titles before embedding them in a <script type="application/ld+json"> block, allowing the title to break out of the script context. The injection was escalated to a full cross-site scripting attack on GitHub Enterprise Server by leveraging JSONP callback support in the REST API to bypass the Content Security Policy. This vulnerability affected all versions of GitHub Enterprise Server prior to 3.21 and was fixed in versions 3.20.4, 3.19.8, 3.18.11, 3.17.17, 3.16.20. This vulnerability was reported via the GitHub Bug Bounty program.
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:L/VI:L/VA:N/SC:H/SI:H/SA:N
Productos afectados
GitHub · Enterprise ServerCVEs relacionadas — GitHub Enterprise Server
En el mismo producto, de las más peligrosas a las menos.
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Referencias
https://docs.github.com/en/enterprise-server@3.16/admin/release-notes#3.16.20https://docs.github.com/en/enterprise-server@3.17/admin/release-notes#3.17.17https://docs.github.com/en/enterprise-server@3.18/admin/release-notes#3.18.11https://docs.github.com/en/enterprise-server@3.19/admin/release-notes#3.19.8https://docs.github.com/en/enterprise-server@3.20/admin/release-notes#3.20.4