silverstripe/userforms vulnerable to remote code execution via userforms email subject
High-risk advisory
CVE-2026-54721
Summary
silverstripe/userforms vulnerable to remote code execution via userforms email subject
Why it matters
GitHub has published a reviewed security advisory for silverstripe/userforms. Prioritize it with other application dependency updates.
Operator check
Check whether silverstripe/userforms is present in application dependency manifests, lockfiles, or build images. Review the GitHub advisory and upgrade to a patched version where available.
Sources
PatchBrief uses public sources. It does not scan environments, verify exposure, or replace vendor guidance.