CVE-2026-77130

Insufficient Session Expiration in extension "SYSSY - TYPO3 Monitoring & Security Checks" (syssy)

Published Aug 25, 2026 CVSS 4.0 · 5.3 Medium EPSS < 1% KEV · Not listed
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.

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

No advisories available
History
Type Values Removed Values Added
First Time appeared Typo3
Typo3 extension "syssy - Typo3 Monitoring & Security Checks"
Vendors & Products Typo3
Typo3 extension "syssy - Typo3 Monitoring & Security Checks"
Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Type Values Removed Values Added
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.
Title Insufficient Session Expiration in extension "SYSSY - TYPO3 Monitoring & Security Checks" (syssy)
Weaknesses CWE-613
References
Metrics cvssV4_0

{'score': 5.3, 'vector': 'CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N'}

Weaknesses

Sources

Status
PUBLISHED
Assigner
TYPO3
Published
Updated
Aug 25, 2026, 2:51 PM
Reserved
Aug 20, 2026, 1:10 PM
Status
Deferred
Published
Aug 25, 2026, 9:17 AM
Modified
Aug 26, 2026, 5:13 PM