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.

Attack Vector Network

Attack Complexity Low

Privileges Required Low

Attack Requirements None

User Interaction None

Vulnerable System Confidentiality Impact Low

Vulnerable System Integrity Impact Low

Vulnerable System Availability Impact None

Subsequent System Confidentiality Impact None

Subsequent System Integrity Impact None

Subsequent System Availability Impact None

No CVSS v3.1

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

The EPSS score is 0.00207.

Key SSVC decision points have not yet been added.

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor Product Default status Versions
TYPO3 Extension "SYSSY - TYPO3 Monitoring & Security Checks" unaffected
Version Status Constraints
0 affected < 3.0.6

No data.

No data.

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Project Subscriptions

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Advisories

No advisories yet.

Fixes

Solution

No solution given by the vendor.

Workaround

No workaround given by the vendor.

References
Link Providers
https://typo3.org/security/advisory/typo3-ext-sa-2026-015 cve-icon cve-icon
History

Tue, 25 Aug 2026 09:15:00 +0000

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'}

Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: TYPO3

Published:

Updated: 2026-08-25T09:00:43.390Z

Reserved: 2026-08-20T13:10:12.062Z

Link: CVE-2026-77130

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Received

Published: 2026-08-25T09:17:33.360

Modified: 2026-08-25T09:17:33.360

Link: CVE-2026-77130

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-08-25T11:00:13Z

Weaknesses