CVE-2025-70810
Published: 09 April 2026
Summary
CVE-2025-70810 is a high-severity CSRF (CWE-352) vulnerability in Phpbb Phpbb. Its CVSS base score is 8.8 (High).
Operationally, exploitation aligns with the MITRE ATT&CK technique Exploit Public-Facing Application (T1190); ranked at the 15.6th percentile by exploit likelihood (below the median); it is not currently listed in the CISA KEV catalog; a public proof-of-concept is referenced.
The strongest mitigations our analysis identified are NIST 800-53 SC-23 (Session Authenticity) and SI-10 (Information Input Validation).
Deeper analysis
CVE-2025-70810 is a Cross-Site Request Forgery (CSRF) vulnerability, mapped to CWE-352, affecting phpBB version 3.3.15. Published on 2026-04-09, it enables a local attacker to execute arbitrary code by targeting the login function and authentication mechanism. The issue carries a CVSS v3.1 base score of 8.8 (AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H), indicating high severity with network accessibility, low attack complexity, no privileges required, and user interaction needed.
A local attacker can exploit this CSRF flaw by crafting malicious requests that leverage the login and authentication processes, potentially leading to arbitrary code execution on the targeted phpBB instance. The attack requires user interaction, aligning with the CVSS metrics, and could compromise confidentiality, integrity, and availability if successful.
References primarily point to a GitHub Gist by researcher ariefibis (https://gist.github.com/ariefibis/80e306765c23d6fac1584dbb76822e30), the researcher's GitHub profile (https://github.com/ariefibis), and LinkedIn page (https://www.linkedin.com/in/mohammed-a-6a2548112/), which likely detail the vulnerability discovery or proof-of-concept but do not specify mitigations or patches in the provided information.
OWASP Top 10 for Web (2025)
EU & UK References
- 🇪🇺 ENISA EUVD: EUVD-2025-209383
Vulnerability details
Cross Site Request Forgery vulnerability in Phpbb phbb3 v.3.3.15 allows a local attacker to execute arbitrary code via the login function and the authentication mechanism
- CWE(s)
Related Threats
MITRE ATT&CK Enterprise TechniquesAI
Why these techniques?
CSRF in public-facing phpBB web app directly enables server-side arbitrary code execution via crafted malicious link requiring user interaction.
CVEs Like This One
Affected Assets
Mitigating Controls
Mitigating Controls (NIST 800-53 r5) AI
Remediates the specific CSRF vulnerability in phpBB v3.3.15 login and authentication mechanism to prevent arbitrary code execution.
Protects session authenticity against forged cross-site requests exploiting the login function.
Validates inputs to the authentication mechanism, blocking CSRF attacks via required tokens or equivalent checks.