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

Summary

### Summary 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). ### Details Affected endpoint:…

Product

composer: getgrav/grav

What to do

General, cautious steps (verify details in the official source):

• Prioritize patching or mitigation immediately (treat as actively risky).
• Identify affected product versions in your inventory and verify whether you are impacted.
• Apply vendor patches/updates or recommended mitigations as soon as available.
• Read the official advisory for exact affected versions and remediation steps.

Official advisory

• Read the official source
• CVE Record
• NVD

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