CVE-2026-77131Network attack vector

System information exposure via cleartext transmission

Published Aug 25, 2026 · Updated Aug 25, 2026

Cleartext transmission in TYPO3 SYSSY before 3.0.6 allows remote authenticated users to read TYPO3 system information over the network. When OpenSSL is unavailable, the extension sends TYPO3, installed-extension, PHP, and MySQL version data to the SYSSY service without encrypting it. The vulnerable path requires an affected server without OpenSSL and control of the project's API key; the stated consequence is exposure of transmitted system information.

CVSS severity5.3
Medium
EPSS probability0.15%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Cleartext transmission in TYPO3 SYSSY before 3.0.6 allows remote authenticated users to read TYPO3 system information over the network. When OpenSSL is unavailable, the extension sends TYPO3, installed-extension, PHP, and MySQL version data to the SYSSY service without encrypting it. The vulnerable path requires an affected server without OpenSSL and control of the project's API key; the stated consequence is exposure of transmitted system information.

The record

CVE
CVE-2026-77131
Published
Aug 25, 2026
Updated
Aug 25, 2026
Vendor
in2code GmbH
Product
SYSSY TYPO3 Extension
Classifications
CWE-319
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Aug 25, 2026CVE publishedPublication date reported by the CVE source.
  2. Aug 25, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=0 <3.0.6

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

in2code GmbH · SYSSY TYPO3 Extensionversion=0 <3.0.6

Published CVSS scores

5.3TYPO3CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-319Cleartext Transmission of Sensitive Information

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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