CVE-2026-0573
CriticalSummary
Zidentyfikowano podatność na przekierowanie URL w GitHub Enterprise Server, która umożliwiała atakującym przekierowania prowadzące do wycieku wrażliwych tokenów autoryzacyjnych. API repository_pages niebezpiecznie podążało za przekierowaniami HTTP, co pozwalało na zachowanie nagłówka autoryzacji zawierającego uprzywilejowany JWT.
Risk Assessment
Atakujący, mając dostęp do instancji GitHub Enterprise Server, mogli wykorzystać tę podatność do eksfiltracji tokenów JWT, co mogło prowadzić do potencjalnego zdalnego wykonania kodu. Wszelkie wersje GitHub Enterprise Server przed 3.19 były narażone na to zagrożenie.
Recommendation
Zaleca się aktualizację do wersji 3.19.2, 3.18.4, 3.17.10, 3.16.13, 3.15.17 lub 3.14.22, aby usunąć tę podatność. Należy również przeanalizować dostęp do instancji GitHub Enterprise Server w celu zminimalizowania ryzyka.
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Original NVD description (English source)
An URL redirection vulnerability was identified in GitHub Enterprise Server that allowed attacker-controlled redirects to leak sensitive authorization tokens. The repository_pages API insecurely followed HTTP redirects when fetching artifact URLs, preserving the authorization header containing a privileged JWT. An authenticated user could redirect these requests to an attacker-controlled domain, exfiltrate the Actions.ManageOrgs JWT, and leverage it for potential remote code execution. Attackers would require access to the target GitHub Enterprise Server instance and the ability to exploit a legacy redirect to an attacker-controlled domain. This vulnerability affected all versions of GitHub Enterprise Server prior to 3.19 and was fixed in versions 3.19.2, 3.18.4, 3.17.10, 3.16.13, 3.15.17, and 3.14.22. This vulnerability was reported via the GitHub Bug Bounty program.
Vulnerability data from NVD (NIST) · CISA KEV · EPSS