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Findings

CVE-2026-35056

XenForo before 2.3.9 and before 2.2.18 allows remote code execution (RCE) by authenticated, but malicious, admin users.

Published Apr 1, 2026 · updated Jun 17, 2026 · xenforo xenforo

XenForo before 2.3.9 and before 2.2.18 allows remote code execution (RCE) by authenticated, but malicious, admin users. An attacker with admin panel access can execute arbitrary code on the server.

Code

The project this record applies to. Exploit listings stay in References.

No public source repository is identified for this product.

Timeline

Detection, updates, and resolution for this record.

  1. Apr 1, 2026 · NIST NVD

    Detected

    XenForo before 2.3.9 and before 2.2.18 allows remote code execution (RCE) by authenticated, but malicious, admin users. An attacker with admin panel access can execute arbitrary code on the server.

  2. Jun 17, 2026 · NIST NVD

    Updated

    XenForo before 2.3.9 and before 2.2.18 allows remote code execution (RCE) by authenticated, but malicious, admin users. An attacker with admin panel access can execute arbitrary code on the server.

Affected

  • cpe xenforo/xenforoversion unspecified

Sources

  • CVE.orgVulnerability recordCVE-2026-35056

    Official CVE identifier

    cve.org
  • NIST NVDVulnerability recordCVE-2026-35056

    XenForo before 2.3.9 and before 2.2.18 allows remote code execution (RCE) by authenticated, but malicious, admin users. An attacker with admin panel access can execute arbitrary code on the server.

    nvd.nist.gov

References