lightpanda-io browser vulnerabilities

Latest lightpanda-io browser CVEs

Newest publication first

1. CVE-2026-52842 Lightpanda:URL parser misidentifies page origin for URLs containing @ in the path - Same-Origin Policy bypass

   Published 2026-07-15

   Critical·CVSS 9.3 EPSS 0.25%

   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 attacke...

2. CVE-2026-52843 Lightpanda: fetch() and XMLHttpRequest attach session cookies to cross-origin requests regardless of credentials mode

   Published 2026-07-15

   Critical·CVSS 9.3 EPSS 0.23%

   Lightpanda is a headless browser designed for AI and automation. Prior to 0.2.9, Lightpanda fetch() and XMLHttpRequest unconditionally attached session cookies to every HTTP request, ignoring credentials: omit, credentials: same-origin, credentials: include, and XMLHttpRequest.wi...

Sources: CVE.org, NVD, CISA KEV, FIRST EPSS, OSV and public exploit-reference metadata. Product matching comes from the published CVE records. A proof-of-concept means public code exists; it is not evidence of exploitation.