CVE-2026-52843

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Source

https://cve.org/CVERecord?id=CVE-2026-52843

Import Source

https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-52843.json

JSON Data

https://api.osv.dev/v1/vulns/CVE-2026-52843

Aliases

GHSA-36mm-v3c2-24cc

Published

2026-07-15T16:16:07.762Z

Modified

2026-07-17T03:47:07.973613685Z

Severity

9.3 (Critical) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:N CVSS Calculator

Summary

Lightpanda: fetch() and XMLHttpRequest attach session cookies to cross-origin requests regardless of credentials mode

Details

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.

Database specific

{
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/52xxx/CVE-2026-52843.json",
    "cna_assigner": "GitHub_M",
    "cwe_ids": [
        "CWE-346"
    ]
}

References

Affected packages

Git / github.com/lightpanda-io/browser

Affected ranges

Type

GIT

Repo

https://github.com/lightpanda-io/browser

Events

Introduced

Fixed

2cdaac780bed65db98bbb6ed2ad5bc6011863c76

Fixed

b2b1302fa2638bcc295c6ad0d9a71bf9aa75adb1

Database specific

{
    "source": [
        "AFFECTED_FIELD",
        "REFERENCES"
    ],
    "extracted_events": [
        {
            "introduced": "0"
        },
        {
            "fixed": "0.2.9"
        }
    ]
}

Affected versions

0.*

0.2.7

0.2.8

Other

alpha

beta

nightly

v0.*

v0.2.0

v0.2.1

v0.2.2

v0.2.3

v0.2.4

v0.2.5

v0.2.6

Database specific

source

"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-52843.json"