What’s Vulnerable › Vulnerabilities
CVE-2026-77131: Cleartext Transmission of Sensitive Information in extension "SYSSY - TYPO3 Monitoring & Security Checks" (syssy)
- Severity: medium (CVSS 5.3 v4.0)
- Exploited in the wild: not listed in CISA KEV
- EPSS: 0.2% probability of exploitation in the next 30 days
- Public exploit or detection template: none known
- Published: 2026-08-25 · updated 2026-08-26
- Weakness: CWE-319
Description
When OpenSSL is unavailable on the server, the extension transmits TYPO3 system information in cleartext instead of encrypting it. Exploitation requires the attacker to already be in control of the SYSSY project's API key.
Affected products
- TYPO3 Extension "SYSSY - TYPO3 Monitoring & Security Checks": before 3.0.6 — fixed in 3.0.6
How to fix
Upgrade to a fixed version: TYPO3 Extension "SYSSY - TYPO3 Monitoring & Security Checks" 3.0.6. Check the vendor advisory for mitigations.
References
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