Vulnerability Description
A flaw was found in libsoup. When handling cookies, libsoup clients mistakenly allow cookies to be set for public suffix domains if the domain contains at least two components and includes an uppercase character. This bypasses public suffix protections and could allow a malicious website to set cookies for domains it does not own, potentially leading to integrity issues such as session fixation.
CVSS Score
MEDIUM
Related Weaknesses (CWE)
References
- https://access.redhat.com/errata/RHSA-2025:8128
- https://access.redhat.com/security/cve/CVE-2025-4035
- https://bugzilla.redhat.com/show_bug.cgi?id=2362651
FAQ
What is CVE-2025-4035?
CVE-2025-4035 is a vulnerability with a CVSS score of 4.3 (MEDIUM). A flaw was found in libsoup. When handling cookies, libsoup clients mistakenly allow cookies to be set for public suffix domains if the domain contains at least two components and includes an uppercas...
How severe is CVE-2025-4035?
CVE-2025-4035 has been rated MEDIUM with a CVSS base score of 4.3/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2025-4035?
Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.