CVE-2026-40929

{"id": "CVE-2026-40929", "cveTags": [], "metrics": {"ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-40929", "role": "CISA Coordinator", "options": [{"exploitation": "poc"}, {"automatable": "no"}, {"technicalImpact": "partial"}], "version": "2.0.3", "timestamp": "2026-04-22T17:58:28.716992Z"}}], "cvssMetricV31": [{"type": "Secondary", "source": "security-advisories@github.com", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 5.4, "attackVector": "NETWORK", "baseSeverity": "MEDIUM", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:L", "integrityImpact": "LOW", "userInteraction": "REQUIRED", "attackComplexity": "LOW", "availabilityImpact": "LOW", "privilegesRequired": "NONE", "confidentialityImpact": "NONE"}, "impactScore": 2.5, "exploitabilityScore": 2.8}]}, "affected": [{"source": "security-advisories@github.com", "affectedData": [{"vendor": "WWBN", "product": "AVideo", "versions": [{"status": "affected", "version": "<= 29.0"}]}]}], "published": "2026-04-21T23:16:20.433", "references": [{"url": "https://github.com/WWBN/AVideo/commit/184f36b1896f3364f864f17c1acca3dd8df3af27", "tags": ["Patch"], "source": "security-advisories@github.com"}, {"url": "https://github.com/WWBN/AVideo/security/advisories/GHSA-8qm8-g55h-xmqr", "tags": ["Exploit", "Mitigation", "Vendor Advisory"], "source": "security-advisories@github.com"}, {"url": "https://github.com/WWBN/AVideo/security/advisories/GHSA-8qm8-g55h-xmqr", "tags": ["Exploit", "Mitigation", "Vendor Advisory"], "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0"}], "vulnStatus": "Analyzed", "weaknesses": [{"type": "Secondary", "source": "security-advisories@github.com", "description": [{"lang": "en", "value": "CWE-352"}]}], "descriptions": [{"lang": "en", "value": "WWBN AVideo is an open source video platform. In versions 29.0 and prior, `objects/commentDelete.json.php` is a state-mutating JSON endpoint that deletes comments but performs no CSRF validation. It does not call `forbidIfIsUntrustedRequest()`, does not verify a CSRF/global token, and does not check `Origin`/`Referer`. Because AVideo intentionally sets `session.cookie_samesite=None` (to support cross-origin embed players), a cross-site request from any attacker-controlled page automatically carries the victim's `PHPSESSID`. Any authenticated victim who has authority to delete one or more comments (site moderators, video owners, and comment authors) can be tricked into deleting comments en masse simply by visiting an attacker page. Commit 184f36b1896f3364f864f17c1acca3dd8df3af27 contains a fix."}, {"lang": "es", "value": "WWBN AVideo es una plataforma de video de c\u00f3digo abierto. En las versiones 29.0 y anteriores, objects/commentDelete.json.php es un endpoint JSON que muta el estado y elimina comentarios, pero no realiza validaci\u00f3n CSRF. No llama a forbidIfIsUntrustedRequest(), no verifica un token CSRF/global y no comprueba Origin/Referer. Debido a que AVideo establece intencionalmente session.cookie_samesite=None (para admitir reproductores incrustados de origen cruzado), una solicitud de sitio cruzado desde cualquier p\u00e1gina controlada por el atacante transporta autom\u00e1ticamente el PHPSESSID de la v\u00edctima. Cualquier v\u00edctima autenticada que tenga autoridad para eliminar uno o m\u00e1s comentarios (moderadores del sitio, propietarios de videos y autores de comentarios) puede ser enga\u00f1ada para eliminar comentarios en masa simplemente visitando una p\u00e1gina del atacante. El commit 184f36b1896f3364f864f17c1acca3dd8df3af27 contiene una soluci\u00f3n."}], "lastModified": "2026-10-26T22:10:00.163", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:a:wwbn:avideo:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "AC38CA07-71C1-4C86-B84A-83CF96367CBA", "versionEndIncluding": "29.0"}], "operator": "OR"}]}], "sourceIdentifier": "security-advisories@github.com"}