{"id":"CVE-2026-28502","aliases":["GHSA-v8jw-8w5p-23g3"],"url":"https://o3.security/vulnerability/CVE-2026-28502","summary":"WWBN AVideo: Authenticated Remote Code Execution via Unsafe Plugin ZIP Extraction","details":"## Summary\nAn authenticated Remote Code Execution (RCE) vulnerability was identified in AVideo related to the plugin upload/import functionality.\n\nThe issue allowed an authenticated administrator to upload a specially crafted ZIP archive containing executable server-side files. Due to insufficient validation of extracted file contents, the archive was extracted directly into a web-accessible plugin directory, allowing arbitrary PHP code execution.\n\n## Vulnerability Type\n- Remote Code Execution (RCE)\n- CWE-434: Unrestricted Upload of File with Dangerous Type\n\n## Affected Versions\n- All versions up to and including 22.x.\n\n## Fixed Version\n- A fix is expected to be released in version 23.\n\n## Root Cause\nThe system validated only the ZIP extension of uploaded plugin packages but did not enforce a strict allowlist of file types within the archive. Extracted files were placed directly in a web-accessible directory without preventing execution of server-side scripts.\n\n## Impact\nAn authenticated administrator could execute arbitrary code on the server, resulting in full system compromise, including:\n- Confidentiality loss\n- Integrity loss\n- Availability impact\n\n## Remediation\nUpgrade immediately to **AVideo version 23 or later**.\n\nVersion 23 introduces improved validation and secure handling of plugin extraction.\n\n## Workarounds\nIf upgrade is not immediately possible:\n- Disable plugin upload/import functionality.\n- Configure the web server to prevent execution of PHP files inside plugin upload directories.","published":"2026-03-06T03:04:57.497Z","modified":"2026-08-12T03:51:18.390344462Z","cvss":null,"epss":{"score":0.00673,"percentile":0.50495,"asOf":"2026-09-17"},"cisaKev":null,"exploitsKnown":0,"affectedPackages":[{"ecosystem":"Packagist","name":"wwbn/avideo","fixedVersion":null}],"fix":{"url":"https://github.com/WWBN/AVideo/commit/b739aeeb9ce34aed9961d2c155d597810f8229db","label":"WWBN/AVideo@b739aee"},"references":[{"type":"WEB","url":"https://github.com/WWBN/AVideo/releases/tag/24.0"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/28xxx/CVE-2026-28502.json"},{"type":"ADVISORY","url":"https://github.com/WWBN/AVideo/security/advisories/GHSA-v8jw-8w5p-23g3"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-28502"},{"type":"FIX","url":"https://github.com/WWBN/AVideo/commit/b739aeeb9ce34aed9961d2c155d597810f8229db"},{"type":"PACKAGE","url":"https://github.com/WWBN/AVideo"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-08-12T03:51:18.390344462Z"}}