What is GHSA-848m-8qg2-wmrv?

GHSA-848m-8qg2-wmrv is a security advisory published by GitHub Security Advisories with Medium severity. Firefox for iOS used partial domain matching when attaching cookies to PDF requests, allowing a...

Which CVE IDs does GHSA-848m-8qg2-wmrv cover?

GHSA-848m-8qg2-wmrv covers the following CVE IDs: CVE-2026-53899. Each CVE has its own detail page on EchelonGraph Pulse with the synthesized EG score.

What is the CVSS v3 score of GHSA-848m-8qg2-wmrv?

GHSA-848m-8qg2-wmrv has a CVSS v3 base score of 6.5, published by GitHub Security Advisories.

GHSA-848m-8qg2-wmrvMediumCVSS 6.5

Firefox for iOS used partial domain matching when attaching cookies to PDF requests, allowing a...

Vendor

GitHub Security Advisories

Published

June 16, 2026

Last Modified

June 16, 2026

🔗 CVE IDs covered (1)

CVE-2026-53899 →

📋 Description

Firefox for iOS used partial domain matching when attaching cookies to PDF requests, allowing a malicious site on a suffix domain to receive cookies belonging to the target site. This vulnerability was fixed in Firefox for iOS 152.0.

🔗 References (4)

https://nvd.nist.gov/vuln/detail/CVE-2026-53899
https://bugzilla.mozilla.org/show_bug.cgi?id=2042909
https://www.mozilla.org/security/advisories/mfsa2026-56
https://github.com/advisories/GHSA-848m-8qg2-wmrv