critical9.1
CVE-2026-52539
Outstatic CMS <= 2.1.9 contains a hardcoded JWT signing secret.
Impact
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.
Affected products
| Product | Affected versions |
|---|---|
| Outstatic CMS | through 2.1.9 |
Versions were read from the advisory text. No structured product data has been published for this record yet.