CVE-2025-35940 Hard-coded ArchiverSpaApi JWT Signing Key
An unauthenticated attacker can use a hard-coded JWT signing key to generate valid tokens and access protected API endpoints in GFI Archiver.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2025-35940?
CVE-2025-35940 is a high-severity vulnerability in GFI Archiver, published on 10 Jun 2025. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
The ArchiverSpaApi ASP.NET application uses a hard-coded JWT signing key. An unauthenticated remote attacker can generate and use a verifiable JWT token to access protected ArchiverSpaApi URL endpoints.
Weakness: CWE-798
Which versions are affected by CVE-2025-35940?
How do I fix CVE-2025-35940?
No fix has been published for CVE-2025-35940 yet. Limit exposure of the affected software until one is available.
Is CVE-2025-35940 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2025-35940 exists.
Sources
Also known as GHSA-5wcp-x98w-p534.