Angular SSR: XSS via Unescaped Processing Instruction (<?...?>) Nodes in Fallback Raw-Content Elements
High-risk advisory
CVE-2026-88058
Summary
Angular SSR: XSS via Unescaped Processing Instruction (<?...?>) Nodes in Fallback Raw-Content Elements
Why it matters
GitHub has published a reviewed security advisory for @angular/platform-server. Prioritize it with other application dependency updates, especially because EPSS places it in the 57% percentile.
Operator check
Check whether @angular/platform-server is present in application dependency manifests, lockfiles, or build images. Review the GitHub advisory and upgrade to a patched version where available. CVSS score: 8.6. EPSS probability: 0.9%; percentile: 57%.
Sources
PatchBrief uses public sources. It does not scan environments, verify exposure, or replace vendor guidance.