Winter: Stored XSS through Editor Settings custom styles

Date Aug 12, 2026
Type Vendor advisory
Signal High-risk advisory
Vendor / Product Composer ยท winter/wn-backend-module
CVE CVE-2026-32258
High-risk advisory CVE-2026-32258

Summary

Winter: Stored XSS through Editor Settings custom styles

Why it matters

GitHub has published a reviewed security advisory for winter/wn-backend-module. Prioritize it with other application dependency updates.

Operator check

Check whether winter/wn-backend-module 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.