CVE-2026-77131: CWE-319 Cleartext Transmission of Sensitive Information in TYPO3 Extension "SYSSY - TYPO3 Monitoring & Security Checks"
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.
AI Analysis
Technical Summary
The TYPO3 extension "SYSSY - TYPO3 Monitoring & Security Checks" suffers from a cleartext transmission vulnerability (CWE-319) identified as CVE-2026-77131. If OpenSSL is not available on the server, the extension sends system information without encryption, exposing sensitive data during transmission. However, exploitation requires possession of the SYSSY project's API key, limiting the attack surface. The vulnerability affects all versions before 3.0.6. There is no vendor advisory or patch currently available to address this issue.
Potential Impact
Sensitive TYPO3 system information can be exposed in cleartext over the network if OpenSSL is unavailable, potentially allowing an attacker with the API key to intercept this data. This could lead to information disclosure but requires prior compromise of the API key, reducing the likelihood of exploitation.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until a fix is available, ensure OpenSSL is installed and properly configured on the server to prevent cleartext transmission. Restrict and protect the SYSSY project's API key to reduce risk of exploitation.
CVE-2026-77131: CWE-319 Cleartext Transmission of Sensitive Information in TYPO3 Extension "SYSSY - TYPO3 Monitoring & Security Checks"
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.
CVSS v4.0
Score 5.3medium
Affected software
pkg:composer/syssy/syssy-typo3-extensionRun on your own infrastructure? Check whether these packages are installed with threat-finder — our free open-source scanner.
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
The TYPO3 extension "SYSSY - TYPO3 Monitoring & Security Checks" suffers from a cleartext transmission vulnerability (CWE-319) identified as CVE-2026-77131. If OpenSSL is not available on the server, the extension sends system information without encryption, exposing sensitive data during transmission. However, exploitation requires possession of the SYSSY project's API key, limiting the attack surface. The vulnerability affects all versions before 3.0.6. There is no vendor advisory or patch currently available to address this issue.
Potential Impact
Sensitive TYPO3 system information can be exposed in cleartext over the network if OpenSSL is unavailable, potentially allowing an attacker with the API key to intercept this data. This could lead to information disclosure but requires prior compromise of the API key, reducing the likelihood of exploitation.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until a fix is available, ensure OpenSSL is installed and properly configured on the server to prevent cleartext transmission. Restrict and protect the SYSSY project's API key to reduce risk of exploitation.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- TYPO3
- Date Reserved
- 2026-08-20T13:10:12.062Z
- Cvss Version
- 4.0
- State
- PUBLISHED
- Remediation Level
- null
Threat ID: 6a8d5b64acd9273b49f36592
Added to database: 08/25/2026, 09:07:48 UTC
Last enriched: 08/25/2026, 09:23:47 UTC
Last updated: 08/25/2026, 22:52:14 UTC
Views: 7
Community Reviews
0 reviewsCrowdsource mitigation strategies, share intel context, and vote on the most helpful responses. Sign in to add your voice and help keep defenders ahead.
Want to contribute mitigation steps or threat intel context? Sign in or create an account to join the community discussion.
Actions
Updates to AI analysis require Pro Console access. Upgrade inside Console → Billing.
External Links
Need more coverage?
Upgrade to Pro Console for AI refresh and higher limits.
For incident response and remediation, OffSeq services can help resolve threats faster.
Latest Threats
Check if your credentials are on the dark web
Instant breach scanning across billions of leaked records. Free tier available.