CVE-2026-76839

Description

Grav before 2.0.16 allows sandboxed Twig templates to access sensitive User fields through allow-listed offsetGet() and offsetexists() methods that lack field filtering. Attackers with page-edit permissions can call offsetGet() on User objects to extract hashed passwords and 2FA secrets, enabling offline password cracking and authentication bypass.

CVSS Vector

References

• https://github.com/getgrav/grav/security/advisories/GHSA-3jhr-mxmx-38cx
• https://www.vulncheck.com/advisories/grav-before-information-disclosure-via-offsetget
• https://github.com/getgrav/grav/security/advisories/GHSA-3jhr-mxmx-38cx