CVE-2025-4945
LowCVSS 3.7Exploitation Probability (EPSS)
Low risk41th percentile — higher than 41% of all known CVEs
Summary
A flaw was found in the cookie parsing logic of the libsoup HTTP library, used in GNOME applications and other software. The vulnerability arises when processing the expiration date of cookies, where a specially crafted value can trigger an integer overflow. This may result in undefined behavior, allowing an attacker to bypass cookie expiration logic, causing persistent or unintended cookie behavior.
Risk Assessment
The organization is at risk of persistent unauthorized sessions or compromise of cookie-based security mechanisms, potentially leading to uncontrolled access to resources.
Recommendation
Immediately update the libsoup library to the latest version containing the fix for this vulnerability. In the meantime, limit trust in cookies from untrusted sources.
Original NVD description (English source)
A flaw was found in the cookie parsing logic of the libsoup HTTP library, used in GNOME applications and other software. The vulnerability arises when processing the expiration date of cookies, where a specially crafted value can trigger an integer overflow. This may result in undefined behavior, allowing an attacker to bypass cookie expiration logic, causing persistent or unintended cookie behavior. The issue stems from improper validation of large integer inputs during date arithmetic operations within the cookie parsing routines.