cvedb.io
CVE-2026-52842
CRITICAL · CVSS 9.3
EPSS exploitation probability: 0%
Published 2026-07-15T17:16:50.317 · Last modified 2026-07-15T17:16:50.317

Summary

Lightpanda is a headless browser designed for AI and automation. Prior to 0.3.1, Lightpanda searched for @ across the entire URL string instead of only the authority component when computing a page origin, so a URL such as `http://attacker.com/@victim.com/` was fetched from attacker.com but treated as `http://victim.com`, allowing a complete Same-Origin Policy bypass. This issue is fixed in version 0.3.1.

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References

This product uses data from the NVD API but is not endorsed or certified by the NVD. Informational only; not professional security advice.