Authenticated file deletion via unvalidated postmeta path
Published Apr 11, 2026 · Updated Apr 11, 2026
Arbitrary file deletion in gVectors Team wpForo Forum 3.0.2 and earlier allows remote authenticated users to delete server files. The topic_add() and topic_edit() handlers store an attacker-supplied data[body][fileurl] path as postmeta, and add_file() later passes that unchanged path to wp_delete_file(). Subscriber-level access is sufficient; any file writable by the PHP process can be removed, including configuration files, which can interrupt the site.
Summary
What happened
Arbitrary file deletion in gVectors Team wpForo Forum 3.0.2 and earlier allows remote authenticated users to delete server files. The topic_add() and topic_edit() handlers store an attacker-supplied data[body][fileurl] path as postmeta, and add_file() later passes that unchanged path to wp_delete_file(). Subscriber-level access is sufficient; any file writable by the PHP process can be removed, including configuration files, which can interrupt the site.
The record
- CVE
- CVE-2026-5809
- Published
- Apr 11, 2026
- Updated
- Apr 11, 2026
- Vendor
- AdvancedCoding
- Product
- wpForo Forum
- Classifications
- CWE-73, T1485
- Attack vector
- network
- Privileges
- authenticated
Timeline
How it unfolded
- Apr 11, 2026CVE publishedPublication date reported by the CVE source.
- Apr 11, 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?
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- Affected versionversion=0 <=3.0.2
What conditions does exploitation require?
What is affected?
Published CVSS scores
CVSS describes severity. EPSS estimates exploitation probability.
Attacks
What attackers are doing with it
Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.
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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