Unauthorized administrative changes via missing CSRF validation
Published Apr 9, 2026 · Updated Apr 9, 2026
Cross-site request forgery in phpBB 3.3.15 allows remote attackers to alter icon settings through an authenticated administrator's browser. The ACP icon-management module accepts state-changing POST requests without robust CSRF validation, allowing a malicious page to submit icon modification fields. Exploitation requires an authenticated administrator to visit attacker-controlled content; published evidence supports unauthorized configuration changes, not code execution.
Summary
What happened
Cross-site request forgery in phpBB 3.3.15 allows remote attackers to alter icon settings through an authenticated administrator's browser. The ACP icon-management module accepts state-changing POST requests without robust CSRF validation, allowing a malicious page to submit icon modification fields. Exploitation requires an authenticated administrator to visit attacker-controlled content; published evidence supports unauthorized configuration changes, not code execution.
The record
- CVE
- CVE-2025-70811
- Published
- Apr 9, 2026
- Updated
- Apr 9, 2026
- Vendor
- Unknown vendor
- Product
- Unknown product
- Classifications
- CWE-352, T1204.001
- Attack vector
- network
- Privileges
- unauthenticated
Timeline
How it unfolded
- Apr 9, 2026CVE publishedPublication date reported by the CVE source.
- Apr 9, 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?
What conditions does exploitation require?
What is affected?
Affected products and versions are unavailable in this record.
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.
Weakness, pattern, technique
Public exploit references
- ACP icon-management CSRF formproof of concept · unverified
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Technologies
Your stack
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Your stack
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