CVE-2026-91942

5.1 mediumEPSS 0.2%

Medium (5.1). EPSS 0.2% chance of exploitation in the next 30 days.

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.

Severity

CVSS 4.0

5.1 medium

CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N

CVSS 3.1

5.4 medium

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

EPSS: 0.2% chance of exploitation in the next 30 days; higher than 14% of CVEs (scores of 2026-10-31)
CWE: CWE-79
Published: 2026-09-15
Modified: 2026-09-17
Record from: the NVD, synced 2026-10-19

References

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
https://github.com/unclecode/crawl4ai/security/advisories/GHSA-7g3g-vhm6-79f3

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