CVE-2025-66300

Status: AnalyzedHigh (8.5)—

Grav is a file-based Web platform. Prior to 1.8.0-beta.27, A low privilege user account with page editing privilege can read any server files using "Frontmatter" form. This includes Grav user account files (/grav/user/accounts/*.yaml), which store hashed user password, 2FA secret, and the password reset token. This can allow an adversary to compromise any registered account by resetting a password for a user to get access to the password reset token from the file or by cracking the hashed password. This vulnerability is fixed in 1.8.0-beta.27.

CVSS

Version: 3.1
Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:L
Base score: 8.5

Exploitation probability (EPSS)

Probability of exploitation in the next 30 days: 0.45%
Percentile among all scored CVEs: 37
Score date: 10/6/2026

EPSS (Exploit Prediction Scoring System, FIRST) estimates how likely a vulnerability is to be exploited in the wild within 30 days. It complements CVSS (impact) and CISA KEV (confirmed exploitation).

🎯 ATT&CK techniques

How this vulnerability is exploited and what the attacker gains, in MITRE ATT&CK terms.

ExploitationT1210 Exploitation of Remote Serviceslateral movement85 %
Primary impactT1005 Data from Local Systemcollection90 %
Secondary impactT1110.004 Credential Stuffingcredential access70 %
Secondary impactT1556.004 Network Device Authenticationdefense impairment · persistence · credential access75 %

Usuario autenticado con permisos bajos accede a archivos del servidor vía formulario Frontmatter (T1005). Obtiene tokens reset y hashes de contraseña para comprometer cuentas (T1556.004, T1110.004). Vector AV:N con PR:L sugiere T1210 (servicio remoto requerimiento de privilegios).

Inferred by our analysis agent from the official description, CVSS vector and CWE, and checked by a supervisor. May contain errors.

🛡️ ATT&CK mitigations that cover these techniques

Privileged Account Management Multi-factor Authentication Vulnerability Scanning User Account Management Threat Intelligence Program Password Policies

Affected technologies (1)

Getgrav — Grav

CWEs

CWE-22

References

Raw JSON (NVD)

Show

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