The frontend topic editing flow does not verify on the server side that the requesting visitor owns the topic being modified. As a result, a visitor who knows the identifier of a topic from the public forum can submit a modified update request for that topic directly and overwrite its content, without the application confirming ownership. Topic identifiers are visible in the public forum listing, and exploitation requires no privileged access or non-default configuration.
Metrics
Affected Vendors & Products
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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-2026-021 |
|
History
Tue, 25 Aug 2026 09:15:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| Description | The frontend topic editing flow does not verify on the server side that the requesting visitor owns the topic being modified. As a result, a visitor who knows the identifier of a topic from the public forum can submit a modified update request for that topic directly and overwrite its content, without the application confirming ownership. Topic identifiers are visible in the public forum listing, and exploitation requires no privileged access or non-default configuration. | |
| Title | Broken Access Control in extension "Forum" (pforum) | |
| Weaknesses | CWE-639 CWE-862 |
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| References |
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| Metrics |
cvssV4_0
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Projects
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MITRE
Status: PUBLISHED
Assigner: TYPO3
Published:
Updated: 2026-08-25T09:00:34.130Z
Reserved: 2026-08-20T13:10:15.962Z
Link: CVE-2026-77143
Vulnrichment
No data.
NVD
Status : Received
Published: 2026-08-25T09:17:35.333
Modified: 2026-08-25T09:17:35.333
Link: CVE-2026-77143
Redhat
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OpenCVE Enrichment
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