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CVE-2024-32468: Improper neutralization of input during web page generation ("Cross-site Scripting") in deno_doc HTML generator

• Severity: medium (CVSS 5.4 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.3% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2024-11-25 · updated 2026-06-17
• Weakness: CWE-79

Description

Deno is a runtime for JavaScript and TypeScript written in rust. Several cross-site scripting vulnerabilities existed in the `deno_doc` crate which lead to Self-XSS with deno doc --html. 1.) XSS in generated `search_index.js`, `deno_doc` outputs a JavaScript file for searching. However, the generated file used `innerHTML` on unsanitzed HTML input. 2.) XSS via property, method and enum names, `deno_doc` did not sanitize property names, method names and enum names. The first XSS most likely didn't have an impact since `deno doc --html` is expected to be used locally with own packages.

Affected products

• denoland deno: deno_doc: < 0.119.0, deno: < 1.42.0

References

• https://github.com/denoland/deno/security/advisories/GHSA-qqwr-j9mm-fhw6
• https://github.com/denoland/deno_doc/blob/dc556c848831d7ae48f3eff2ababc6e75eb6b73e/src/html/templates/pages/search.js#L120-L144

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