Vulnerability · Published Oct 12, 2026 · Assigned by VulnCheck

CVE-2026-109319Grav Guestbook Plugin 0.5.0 and 0.5.1 Missing Authorization and CSRF in Moderation

Medium 4.3

In plain English

A medium-severity missing authorization in grav-plugin-guestbook from getgrav. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.2% (higher than 10% of all known vulnerabilities).

Severity (CVSS 3.1)4.3Medium

Exploit odds (30 days)0.2%top 90.0% of all CVEs

Exploited in the wildNo reportsCISA SSVC: none

Attack toolingNoneno public tooling known

Official description

Grav Guestbook plugin 0.5.0 and 0.5.1 contains missing authorization and cross-site request forgery vulnerabilities in Admin moderation actions delete, approve, and approveAll. Authenticated Admin users lacking the admin.guestbook permission, or external sites abusing a moderator's session via nonce-less GET requests, can delete or approve Guestbook entries.

Affected products (as reported)

Vendor	Product	Versions
getgrav	grav-plugin-guestbook	0.5.0 – before 0.5.2

Weakness: CWE-862 · Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N

References

GitHub Security Advisory (GHSA-wxr7-h5mm-c7mv) vendor-advisory, third-party-advisory
VulnCheck Advisory: Grav Guestbook Plugin 0.5.0 and 0.5.1 Missing Authorization and CSRF in Moderation third-party-advisory