CVE-2026-77131 json
Cleartext Transmission of Sensitive Information in extension "SYSSY - TYPO3 Monitoring & Security Checks" (syssy)
published 2026-08-25 2 mo ago modified 2026-08-26 2 mo ago also EUVD-2026-65344
- cvss
- 5.3
- version 4.0, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.2%
- EPSS 0.2% chance of exploitation in 30 days, percentile 15%
- public exploits
- 0
- none known
Summary
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.
Patch / fix
- TYPO3 Extension "SYSSY - TYPO3 Monitoring & Security Checks" 3.0.6
CISA SSVC
- Exploitation
- none
- Automatable
- no
- Technical impact
- partial
- Assessed
- 2 mo ago
Exploit prediction
0.24% chance of exploitation in the next 30 days, higher than 15% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 4.0 | 5.3 | 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 |
| CNA | 4.0 | 5.3 | 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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X |
Affected products
- TYPO3 Extension "SYSSY - TYPO3 Monitoring & Security Checks"
Classification
- Weakness
-
- CWE-319 Cleartext Transmission of Sensitive Information
References
-
typo3.org
/security/advisory/typo3-ext-sa-2026-015
vendor-advisory
Sources
- CVE List CVE-2026-77131
- NVD CVE-2026-77131
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