CVE-2024-50346
WebFeed is a lightweight web feed reader extension for Firefox/Chrome. Multiple HTML injection vulnerabilities in WebFeed can lead to CSRF and UI spoofing attacks. A remote attacker can provide malicious RSS feeds and attract the victim user to visit it using WebFeed. The attacker can then inject malicious HTML into the extension page and fool the victim into sending out HTTP requests to arbitrary sites with the victim's credentials. Users are vulnerable to CSRF attacks when visiting malicious RSS feeds via WebFeed. Unwanted actions could be executed on the user's behalf on arbitrary websites. This issue has been addressed in release version 0.9.2. All users are advised to upgrade. There are no known workarounds for this vulnerability.
CVSS
- Versión: 4.0
- Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:L/VA:N/SC:N/SI:L/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
- Puntuación base: 5.1
Probabilidad de explotación (EPSS)
- Probabilidad de explotación en los próximos 30 días: 0.61%
- Percentil entre todas las CVEs puntuadas: 47
- Fecha de la puntuación: 6/10/2026
EPSS (Exploit Prediction Scoring System, de FIRST) estima la probabilidad de que una vulnerabilidad sea explotada en 30 días. Complementa a CVSS (impacto) y a CISA KEV (explotación confirmada).
Tecnologías afectadas (1)
⚠ Inferidas por IA a partir de la descripción — NVD aún no ha analizado esta CVE; no son CPE verificados.
CWE
- CWE-79
Referencias
JSON original (NVD)
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"value": "WebFeed is a lightweight web feed reader extension for Firefox/Chrome. Multiple HTML injection vulnerabilities in WebFeed can lead to CSRF and UI spoofing attacks. A remote attacker can provide malicious RSS feeds and attract the victim user to visit it using WebFeed. The attacker can then inject malicious HTML into the extension page and fool the victim into sending out HTTP requests to arbitrary sites with the victim's credentials. Users are vulnerable to CSRF attacks when visiting malicious RSS feeds via WebFeed. Unwanted actions could be executed on the user's behalf on arbitrary websites. This issue has been addressed in release version 0.9.2. All users are advised to upgrade. There are no known workarounds for this vulnerability."
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"value": "WebFeed es una extensión ligera de lectura de feeds web para Firefox/Chrome. Varias vulnerabilidades de inyección de HTML en WebFeed pueden provocar ataques de suplantación de interfaz de usuario y CSRF. Un atacante remoto puede proporcionar feeds RSS maliciosos y atraer al usuario víctima para que los visite mediante WebFeed. El atacante puede entonces inyectar HTML malicioso en la página de la extensión y engañar a la víctima para que envíe solicitudes HTTP a sitios arbitrarios con las credenciales de la víctima. Los usuarios son vulnerables a ataques CSRF cuando visitan feeds RSS maliciosos a través de WebFeed. Se podrían ejecutar acciones no deseadas en nombre del usuario en sitios web arbitrarios. Este problema se ha solucionado en la versión de lanzamiento 0.9.2. Se recomienda a todos los usuarios que actualicen. No existen soluciones alternativas conocidas para esta vulnerabilidad."
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"lastModified": "2026-06-17T08:04:16.703",
"sourceIdentifier": "security-advisories@github.com"
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