CVE-2026-35204
Helm is a package manager for Charts for Kubernetes. From 4.0.0 to 4.1.3, a specially crafted Helm plugin, when installed or updated, will cause Helm to write the contents of the plugin to an arbitrary filesystem location. To prevent this, validate that the plugin.yaml of the Helm plugin does not include a version: field containing POSIX dot-dot path separators ie. "/../". This vulnerability is fixed in 4.1.4.
CVSS
- Versión: 4.0
- Vector: CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:N/VI:H/VA:L/SC:H/SI:H/SA:H/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: 8.4
Probabilidad de explotación (EPSS)
- Probabilidad de explotación en los próximos 30 días: 0.20%
- Percentil entre todas las CVEs puntuadas: 9
- 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
T1203Exploitation for Client Executionexecution85 % - Impacto principal
T1565.002Transmitted Data Manipulationimpact80 % - Impacto secundario
T1068Exploitation for Privilege Escalationprivilege escalation75 %
UI:R + acceso local requiere interacción del usuario (instalar/actualizar plugin preparado). El impacto es escritura arbitraria en filesystem (path traversal CWE-22) que puede sobrescribir archivos críticos o escalar privilegios en el sistema.
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 (1)
CWE
- CWE-22
- CWE-22
Referencias
- https://github.com/helm/helm/commit/36c8539e99bc42d7aef9b87d136254662d04f027
- https://github.com/helm/helm/releases/tag/v4.1.4
- https://github.com/helm/helm/security/advisories/GHSA-vmx8-mqv2-9gmg
- https://access.redhat.com/errata/RHSA-2026:26441
- https://access.redhat.com/security/cve/CVE-2026-35204
- https://bugzilla.redhat.com/show_bug.cgi?id=2456933
- https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-35204.json
JSON original (NVD)
Mostrar
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