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CVE PROGRAM SOURCE RECORD5.1 Medium

CVE-2026-91944

crawl4ai before 0.9.3 DOM-based XSS via Playground UI

Read JSON ↗CVE.org ↗
Status
Published
Published
Updated
Assigning organization
VulnCheck

Description

crawl4ai versions before 0.9.3 contain a DOM-based cross-site scripting vulnerability in the Playground UI where the forceHighlightElement() function assigns textContent back to innerHTML, re-parsing JSON responses as HTML. Attackers can inject malicious scripts through crawled page content like the page title to steal the operator's API token from sessionStorage and gain full server control.

Affected products

Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.

unclecode crawl4ai

Default version status: unaffected

  • 0 to < 0.9.3affected
  • 0.9.3unaffected
pkg:pypi/crawl4ai

References