Critical severity9.1NVD Advisory· Published Jul 30, 2026· Updated Jul 31, 2026
CVE-2026-52539
CVE-2026-52539
Description
Outstatic CMS <= 2.1.9 contains a hardcoded JWT signing secret. When the OST_TOKEN_SECRET environment variable is not set, the application falls back to the default value which is publicly visible in the source code repository. An unauthenticated remote attacker can exploit this by forging JWT session tokens with arbitrary user data and full administrative permissions.
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Affected products
1Patches
Vulnerability mechanics
References
1News mentions
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