{"resultsPerPage":1,"startIndex":0,"totalResults":1,"format":"NVD_CVE","version":"2.0","timestamp":"2026-06-10T22:17:57.370","vulnerabilities":[{"cve":{"id":"CVE-2026-33500","sourceIdentifier":"security-advisories@github.com","published":"2026-03-23T17:16:51.340","lastModified":"2026-03-24T18:11:11.797","vulnStatus":"Analyzed","cveTags":[],"descriptions":[{"lang":"en","value":"WWBN AVideo is an open source video platform. In versions up to and including 26.0, the fix for CVE-2026-27568 (GHSA-rcqw-6466-3mv7) introduced a custom `ParsedownSafeWithLinks` class that sanitizes raw HTML `<a>` and `<img>` tags in comments, but explicitly disables Parsedown's `safeMode`. This creates a bypass: markdown link syntax `[text](javascript:alert(1))` is processed by Parsedown's `inlineLink()` method, which does not go through the custom `sanitizeATag()` sanitization (that only handles raw HTML tags). With `safeMode` disabled, Parsedown's built-in `javascript:` URI filtering (`sanitiseElement()`/`filterUnsafeUrlInAttribute()`) is also inactive. An attacker can inject stored XSS via comment markdown links. Commit 3ae02fa240939dbefc5949d64f05790fd25d728d contains a patch."},{"lang":"es","value":"WWBN AVideo es una plataforma de video de código abierto. En versiones hasta la 26.0 inclusive, la corrección para CVE-2026-27568 (GHSA-rcqw-6466-3mv7) introdujo una clase personalizada ParsedownSafeWithLinks que sanitiza las etiquetas HTML sin procesar `<a rel=\"nofollow\">` e `` en los comentarios, pero deshabilita explícitamente el safeMode de Parsedown. Esto crea un bypass: la sintaxis de enlace markdown `[text](javascript:alert(1))` es procesada por el método inlineLink() de Parsedown, que no pasa por la sanitización personalizada sanitizeATag() (que solo maneja etiquetas HTML sin procesar). Con safeMode deshabilitado, el filtrado de URI `javascript:` incorporado de Parsedown (sanitiseElement()/filterUnsafeUrlInAttribute()) también está inactivo. Un atacante puede inyectar XSS almacenado a través de enlaces markdown en comentarios. El commit 3ae02fa240939dbefc5949d64f05790fd25d728d contiene un parche.</a>"}],"metrics":{"cvssMetricV31":[{"source":"security-advisories@github.com","type":"Secondary","cvssData":{"version":"3.1","vectorString":"CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N","baseScore":5.4,"baseSeverity":"MEDIUM","attackVector":"NETWORK","attackComplexity":"LOW","privilegesRequired":"LOW","userInteraction":"REQUIRED","scope":"CHANGED","confidentialityImpact":"LOW","integrityImpact":"LOW","availabilityImpact":"NONE"},"exploitabilityScore":2.3,"impactScore":2.7}]},"weaknesses":[{"source":"security-advisories@github.com","type":"Primary","description":[{"lang":"en","value":"CWE-79"}]}],"configurations":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:a:wwbn:avideo:*:*:*:*:*:*:*:*","versionEndIncluding":"26.0","matchCriteriaId":"774C24F1-9D26-484F-B931-1DA107C8F588"}]}]}],"references":[{"url":"https://github.com/WWBN/AVideo/commit/3ae02fa240939dbefc5949d64f05790fd25d728d","source":"security-advisories@github.com","tags":["Patch"]},{"url":"https://github.com/WWBN/AVideo/security/advisories/GHSA-72h5-39r7-r26j","source":"security-advisories@github.com","tags":["Exploit","Mitigation","Vendor Advisory"]}]}}]}