Vulnerability · Published Aug 25, 2026 · Assigned by VulnCheck

CVE-2026-76839Grav before 2.0.16 Information Disclosure via offsetGet

Medium 6.5

In plain English

A medium-severity security flaw in grav from getgrav. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.3% (higher than 28% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.

Severity (CVSS 3.1)6.5Medium

Exploit odds (30 days)0.3%top 72.2% of all CVEs

Exploited in the wildNo reportsCISA SSVC: poc

Attack toolingNoneno public tooling known

Official 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.

Affected packages & fixed versions

Ecosystem	Package	Fixed in	Advisory
Packagist	getgrav/grav	2.0.16	GHSA-3jhr-mxmx-38cx

Affected products (as reported)

Vendor	Product	Versions
getgrav	grav	0 – before 2.0.16

Weakness: CWE-522 · Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N

References

GitHub Security Advisory (GHSA-3jhr-mxmx-38cx) vendor-advisory
VulnCheck Advisory: Grav before 2.0.16 Information Disclosure via offsetGet third-party-advisory