File Viewer: DOM XSS via unsafe hyperlink schemes in the legacy DOC renderer

Date Sep 18, 2026

Type Vendor advisory

Signal High-risk advisory

Vendor / Product npm · @file-viewer/doc

CVE CVE-2026-91127

High-risk advisory CVE-2026-91127

Summary

File Viewer: DOM XSS via unsafe hyperlink schemes in the legacy DOC renderer

Why it matters

GitHub has published a reviewed security advisory for @file-viewer/doc. Prioritize it with other application dependency updates.

Operator check

Check whether @file-viewer/doc is present in application dependency manifests, lockfiles, or build images. Review the GitHub advisory and upgrade to a patched version where available.

Sources

GitHub Advisory GHSA-3753-m2x2-q623 NVD — CVE-2026-91127 Source reference

PatchBrief uses public sources. It does not scan environments, verify exposure, or replace vendor guidance.

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