CVE-2026-76839

Medium

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.

SeverityMedium

CVSS6.5

Exploit probability—

ProductGetgrav/grav

PublishedAug 25, 2026

First seenAug 25, 2026

Weakness typeCWE-522CWE-522

How to fix

Update

getgrav/grav2.0.16 or later

Vendor advisories

github.com/getgrav/grav/security/advisories/GHSA-3jhr-mxmx-38cx

Affected products

Product	Affected versions	Fixed in
getgrav/gravPackagist	v < 2.0.16	2.0.16

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