CVE-2026-40903

Estado: AnalizadaCrítica (9.1)—

goshs is a SimpleHTTPServer written in Go. Prior to 2.0.0-beta.6, goshs has an ArtiPACKED vulnerability. ArtiPACKED can lead to leakage of the GITHUB_TOKEN through workflow artifacts, even though the token is not present in the repository source code. This vulnerability is fixed in 2.0.0-beta.6.

CVSS

Versión: 3.1
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
Puntuación base: 9.1

Probabilidad de explotación (EPSS)

Probabilidad de explotación en los próximos 30 días: 0.43%
Percentil entre todas las CVEs puntuadas: 35
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.

ExplotaciónT1190 Exploit Public-Facing Applicationinitial access90 %
Impacto principalT1552.001 Credentials In Filescredential access85 %
Impacto secundarioT1005 Data from Local Systemcollection75 %

Vulnerabilidad en aplicación expuesta en red (goshs SimpleHTTPServer) con acceso no autenticado (PR:N, UI:N) que permite filtración de secretos (GITHUB_TOKEN) almacenados en artefactos de workflow, comprometiendo confidencialidad e integridad sin requerimientos de acceso previo.

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

Vulnerability Scanning User Training Restrict File and Directory Permissions Privileged Account Management Password Policies Network Segmentation

Tecnologías afectadas (1)

Goshs — Goshs

CWE

CWE-829

Referencias

https://github.com/patrickhener/goshs/security/advisories/GHSA-hpxj-9fgp-fhhf

JSON original (NVD)

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