CVE-2026-5119
Estado: ModificadaAlta (8.2)—
A flaw was found in libsoup. When establishing HTTPS tunnels through a configured HTTP proxy, sensitive session cookies are transmitted in cleartext within the initial HTTP CONNECT request. A network-positioned attacker or a malicious HTTP proxy can intercept these cookies, leading to potential session hijacking or user impersonation.
CVSS
- Versión: 3.1
- Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:N
- Puntuación base: 8.2
Probabilidad de explotación (EPSS)
- Probabilidad de explotación en los próximos 30 días: 0.33%
- Percentil entre todas las CVEs puntuadas: 24
- 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).
🎯 Técnicas ATT&CK
Cómo se explota esta vulnerabilidad y qué consigue el atacante, en el lenguaje de MITRE ATT&CK.
- Explotación
T1557Adversary-in-the-Middlecredential access · collection85 % - Impacto principal
T1212Exploitation for Credential Accesscredential access90 % - Impacto secundario
T1078Valid Accountsstealth · persistence · privilege escalation · initial access80 %
AV:N requiere red, pero el vector muestra acceso a tráfico en tránsito (proxy HTTPS). T1557 (man-in-the-middle) describe interceptación de comunicaciones. La exfiltración de cookies de sesión es T1212 (acceso a credenciales).
Inferido por nuestro agente de análisis a partir de la descripción oficial, el vector CVSS y la CWE, y comprobado por un supervisor. Puede contener errores.
🛡️ Mitigaciones ATT&CK que cubren estas técnicas
Tecnologías afectadas (2)
CWE
- CWE-319
Referencias
- https://access.redhat.com/errata/RHSA-2026:13978
- https://access.redhat.com/errata/RHSA-2026:14087
- https://access.redhat.com/errata/RHSA-2026:15968
- https://access.redhat.com/errata/RHSA-2026:17482
- https://access.redhat.com/errata/RHSA-2026:19143
- https://access.redhat.com/errata/RHSA-2026:19356
- https://access.redhat.com/errata/RHSA-2026:21686
- https://access.redhat.com/errata/RHSA-2026:22316
- https://access.redhat.com/errata/RHSA-2026:22317
- https://access.redhat.com/errata/RHSA-2026:22323
- https://access.redhat.com/errata/RHSA-2026:22710
- https://access.redhat.com/errata/RHSA-2026:22716
- https://access.redhat.com/errata/RHSA-2026:24344
- https://access.redhat.com/errata/RHSA-2026:24722
- https://access.redhat.com/security/cve/CVE-2026-5119
- https://bugzilla.redhat.com/show_bug.cgi?id=2452932
- https://gitlab.gnome.org/GNOME/libsoup/-/issues/502
JSON original (NVD)
Mostrar
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