CVE-2026-30691: @cyntler/react-doc-viewer's TXTRenderer fails to sanitize file content and explicitly casts raw data as a ReactNode

May 20, 2026 (updated June 11, 2026)

Cross-Site Scripting (XSS) vulnerability in @cyntler/react-doc-viewer v1.17.1 allows remote attackers to execute arbitrary JavaScript via a crafted .txt file. The TXTRenderer component fails to sanitize file content and explicitly casts raw data as a ReactNode.

References

github.com/advisories/GHSA-fvhg-p4hf-79x3
github.com/cyntler/react-doc-viewer/issues/317
github.com/walidriouah/CVE-2026-30691
nvd.nist.gov/vuln/detail/CVE-2026-30691

Code Behaviors & Features

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