What’s Vulnerable › Vulnerabilities

CVE-2024-52793: XSS vulnerability in serveDir API of @std/http/file-server on POSIX systems

• Severity: medium (CVSS 5.1 v4.0)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.6% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2024-11-22 · updated 2026-06-17
• Weakness: CWE-79

Description

The Deno Standard Library provides APIs for Deno and the Web. Prior to version 1.0.11, `http/file-server`'s `serveDir` with `showDirListing: true` option is vulnerable to cross-site scripting when the attacker is a user who can control file names in the source directory on systems with POSIX file names. Exploitation might also be possible on other systems but less trivial due to e.g. lack of file name support for `<>` in Windows. Version 1.0.11 fixes the issue.

Affected products

• denoland std: before 1.0.11

References

• https://github.com/denoland/std/blob/065296ca5a05a47f9741df8f99c32fae4f960070/http/file_server.ts#L507
• https://github.com/denoland/std/blob/065296ca5a05a47f9741df8f99c32fae4f960070/http/file_server.ts#L532
• https://github.com/denoland/std/security/advisories/GHSA-32fx-h446-h8pf

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