PT-2026-61928 · Getgrav · Grav

Leonkaya + 1 · CVE-2026-64628 · Published 2026-07-21 · Updated 2026-07-21

Mitre

CVSS v3.1

5.4

Medium

Base vector

AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N

Grav contains a stored cross-site scripting vulnerability in shortcode-core attribute handlers where the XSS detection scan only matches payloads containing literal angle brackets, allowing shortcode parameters to bypass validation. Attackers with admin.pages permission can inject malicious JavaScript through shortcode attributes that execute in any viewer's browser, including administrators, enabling session hijacking via admin nonce theft.

Fix

XSS

Weakness Enumeration

CWE-79

Related Identifiers

CVE-2026-64628

Affected Products

Grav

References · 3

• https://github.com/getgrav/grav/security/advisories/GHSA-q5fw-vpqc-fgph · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2026-64628 · Security Note
• https://vulncheck.com/advisories/grav-stored-cross-site-scripting-via-shortcode-attribute-handlers · Note