CVE-2026-52843

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.withCredentials, allowing an attacker-controlled origin in a Lightpanda session to issue authenticated cross-origin requests against a victim origin. This issue is fixed in version 0.2.9.

CVSS v3 9.3 CRITICAL

9.3^/10

CVSS v3 : CRITICAL

Vector :

Exploitability : 2.8 / Impact : 5.8

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction REQUIRED

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact NONE

Scope CHANGED

References

Link	Resource
https://github.com/lightpanda-io/browser/commit/2cdaac780bed65db98bbb6ed2ad5bc6011863c76
https://github.com/lightpanda-io/browser/pull/2155
https://github.com/lightpanda-io/browser/releases/tag/0.2.9
https://github.com/lightpanda-io/browser/security/advisories/GHSA-36mm-v3c2-24cc

Configurations

No configuration.

History

15 Jul 2026, 17:16

Type	Values Removed	Values Added
New CVE

Information

Published : 2026-07-15 17:16

Updated : 2026-07-15 20:50

NVD link : CVE-2026-52843

Mitre link : CVE-2026-52843

CVE.ORG link : CVE-2026-52843

JSON object : View

Products Affected

No product.

CWE

CWE-346

Origin Validation Error

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