CVE-2026-91942

MEDIUMCVSS 5.4

Description

crawl4ai before 0.9.3 contains a DOM-based cross-site scripting vulnerability in the Docker Playground UI that assigns untrusted crawl results to element.innerHTML. Attackers can craft malicious PDFs with event-handler markup to execute JavaScript in the Playground origin and steal API tokens from sessionStorage for authenticated API abuse.

Timeline

Published:September 15th, 2026 4:17 PM

Last modified:September 16th, 2026 8:15 PM

CVSS Scoring

CVSS v3: 5.4 (MEDIUM)

CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N

Weaknesses (CWE)

CWE-79

References & Reports

Advisories, patches, and third-party reports

https://github.com/unclecode/crawl4ai/security/advisories/GHSA-7g3g-vhm6-79f3
https://www.vulncheck.com/advisories/crawl4ai-before-0.9.3-cross-site-scripting-via-innerhtml

Source: NIST NVD · Data may lag official sources by up to one minute