CVE-2026-42611: Grav is Vulnerable to Stored XSS via Tag Injection

May 5, 2026

A low-privileged (with the ability to create a page) user can cause XSS with the injection of svg element. The XSS can further be escalated to dump the entire system information available under /admin/config/info whenever a Super Admin visits the page; which can further be chained with the use of admin-nonce to do a complete server compromise (RCE).

References

github.com/advisories/GHSA-w8cg-7jcj-4vv2
github.com/getgrav/grav
github.com/getgrav/grav/commit/5a12f9be8314682c8713e569e330f11805d0a663
github.com/getgrav/grav/security/advisories/GHSA-w8cg-7jcj-4vv2
nvd.nist.gov/vuln/detail/CVE-2026-42611

Code Behaviors & Features

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