Vulnerability · Published Oct 12, 2026 · Assigned by VulnCheck

CVE-2026-109322Grav Guestbook before 0.5.2 Stored XSS via AJAX Pagination and Admin Views

Medium 6.1

In plain English

A medium-severity cross-site scripting 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)6.1Medium

Exploit odds (30 days)0.2%top 90.1% of all CVEs

Exploited in the wildNo reportsCISA SSVC: none

Attack toolingNoneno public tooling known

Official description

Grav Guestbook plugin before 0.5.2 contains a stored cross-site scripting vulnerability because its AJAX Load more and Admin Load all handlers insert stored author and message fields into the DOM as unescaped HTML via jQuery. Unauthenticated visitors can submit markup that executes in other visitors' browsers and, in versions 0.5.0 and 0.5.1, in administrator moderation sessions.

Affected products (as reported)

Vendor	Product	Versions
getgrav	grav-plugin-guestbook	0 – before 0.5.2

Weakness: CWE-79 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

References

GitHub Security Advisory (GHSA-jgpj-gchm-6j29) vendor-advisory, third-party-advisory
VulnCheck Advisory: Grav Guestbook before 0.5.2 Stored XSS via AJAX Pagination and Admin Views third-party-advisory