CVE-2026-39903
- Source
- https://cve.org/CVERecord?id=CVE-2026-39903
- Import Source
- https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-39903.json
- JSON Data
- https://api.osv.dev/v1/vulns/CVE-2026-39903
- Published
- 2026-07-10T16:03:20.983Z
- Modified
- 2026-07-15T01:49:10.317546538Z
- Severity
-
- 7.1 (High) CVSS_V4 - CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:H/VA:L/SC:N/SI:N/SA:N CVSS Calculator
- Summary
- Simple Machines Forum Authorization Bypass via AttachmentApprove.php
- Details
-
Simple Machines Forum 2.1 prior to 2.1.8 and 3.0 prior to 3.0 Alpha 5 contains an authorization bypass vulnerability in Sources/Actions/AttachmentApprove.php where a single-character operator error causes the permission check to always pass regardless of user permissions. An authenticated low-privileged user can approve, reject, or delete any pending attachments on any board without holding the required approve_posts permission, bypass moderation queues for their own uploads, and enumerate and delete other users' pending attachments.
- Database specific
{ "cna_assigner": "VulnCheck", "cwe_ids": [ "CWE-863" ], "unresolved_ranges": [ { "source": "AFFECTED_FIELD", "extracted_events": [ { "introduced": "2.1.0" }, { "fixed": "2.1.8" }, { "introduced": "3.0.0" }, { "fixed": "3.0.0 Alpha 5" } ] } ], "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/39xxx/CVE-2026-39903.json" }- References
-
- https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/39xxx/CVE-2026-39903.json
- https://nvd.nist.gov/vuln/detail/CVE-2026-39903
- https://www.vulncheck.com/advisories/simple-machines-forum-authorization-bypass-via-attachmentapprove-php
- https://github.com/SimpleMachines/SMF/pull/9181
- https://github.com/SimpleMachines/SMF/pull/9182
- https://github.com/SimpleMachines/SMF/commit/7d048f8d66aab9af51cd6ee110fbad103cf673e8
- https://github.com/SimpleMachines/SMF/commit/a7875e876a647572dd4c45da881b875092caac3d
- https://github.com/SimpleMachines/SMF