CVE-2026-77130 Insufficient Session Expiration in extension "SYSSY - TYPO3 Monitoring & Security Checks" (syssy)
An attacker with a valid API key can bypass session expiration checks to authenticate using an expired JWT token in the SYSSY TYPO3 extension.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-77130?
CVE-2026-77130 is a medium-severity authentication bypass vulnerability in Extension "SYSSY - TYPO3 Monitoring & Security Checks", published on 25 Aug 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
The extension fails to properly validate the expiration of a client-supplied JWT token, allowing an attacker in control of a valid API key to authenticate with an expired token. Exploitation requires the attacker to already be in control of the SYSSY project's API key.
Weakness: CWE-613
Which versions are affected by CVE-2026-77130?
How do I fix CVE-2026-77130?
No fix has been published for CVE-2026-77130 yet. Limit exposure of the affected software until one is available.
Upgrade, and rotate credentials and sessions that may have been exposed. More about Authentication bypass.
Is CVE-2026-77130 being exploited?
There is no known exploitation of CVE-2026-77130 in the wild and no public exploit code.
Sources
Also known as GHSA-j868-6x23-744q.