CVE-2026-77138 Details
UNDERGOING ENRICHMENT
The CVE is currently being enriched by the Volerion team. The enrichment process results in the association of reference link tags, CVSS, and CPE applicability statement data.
Description
The extension fails to safely process untrusted client input of an attacker-controlled cookie directly to PHP's unserialize(). A remote, unauthenticated attacker can supply a crafted serialized payload to trigger PHP Object Injection, leading to Remote Code Execution on the TYPO3 server.
Metrics
CVSS 4.0 Severity and Vector Strings:
VolerionCVSS-B:…Vector:This vulnerability is currently being analyzed.CVSS 3.x Severity and Vector Strings:
VolerionCVSS-B:…Vector:This vulnerability is currently being analyzed.No CVSS 3.x data is available for this CVE.
No data available for CVSS Version 2.0 on this CVE.
CISA-ADP
Assessed Aug 25, 2026References to Advisories, Solutions, and Tools
By selecting these links, you will be leaving this site. These are references gathered from the official CVE record and are not endorsed by Volerion.
| URL | Source(s) | Tag(s) |
|---|---|---|
| https://typo3.org/security/advisory/typo3-ext-sa-2026-014 | TYPO3 |
Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| CWE-502 | Deserialization of Untrusted Data | TYPO3 |
Affected Products
This vulnerability is currently being analyzed
Change History
2 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Aug 25, 2026 | CVE Modified | CISA-ADP |
| Aug 25, 2026 | New CVE Received | TYPO3 |