# CVE-2026-91942

## Summary

- **CVE ID:** CVE-2026-91942
- **Severity:** MEDIUM
- **CVSS Score:** 5.4 (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)
- **CWE:** CWE-79
- **Published:** Sep 15, 2026
- **Last Modified:** Sep 15, 2026

## 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.

## Affected Products

- unclecode — crawl4ai (0)
- unclecode — crawl4ai (0.9.3)

## References

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

## Exploitation Prediction (EPSS)

- **EPSS Score:** 0.22%
- **EPSS Percentile:** 13.1

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_Exported from OnDuty AI Vulnerability Intelligence on 2026-09-17._