CVE-2025-4945

LOW
INFO Priority: 0.03 BB Relevance: 58/100
Published: 2025-05-19 Modified: 2026-11-06 First seen: 2026-11-06 Status: active

Attack Surface

Network No Auth No Interaction

CVSS Vector Breakdown

AV: Network
AC: High
PR: None
UI: None
S: Unchanged
C: None
I: Low
A: None

Description

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.

Affected Software (1)

VendorProductVersion
— — 0

References & Advisories (16)

https://access.redhat.com/errata/RHSA-2025:19713
vendor-advisory x_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2025:19714
vendor-advisory x_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2025:19720
vendor-advisory x_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2025:20959
vendor-advisory x_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2025:21032
vendor-advisory x_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2025:21655
vendor-advisory x_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2025:21656
vendor-advisory x_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2025:21657
vendor-advisory x_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2025:21664
vendor-advisory x_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2025:21665
vendor-advisory x_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2025:21666
vendor-advisory x_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2025:21772
vendor-advisory x_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2025:22013
vendor-advisory x_refsource_REDHAT
https://bugzilla.redhat.com/show_bug.cgi?id=2367175
issue-tracking x_refsource_REDHAT

Bug Bounty Relevance

58 / 100
✓ Network accessible
✓ No authentication
✓ No user interaction

CVSS Score

3.7 / 10.0 v3.1
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:N

EPSS — Exploitation Probability

0.70%
Raw Score 0.006990
Percentile 53.7%
Date 2026-11-13

EPSS Trend

2026-11-13
0.00699
2026-11-12
0.00699
2026-11-10
0.00699
2026-11-09
0.00699
2026-11-08
0.00699
2026-11-07
0.00699
2026-11-06
0.00699

Intelligence Sources

mitre ref →
nvd ref →