Red Hat Security Advisory: libsoup3 security update
Libsoup is an HTTP library implementation in C. It was originally part of a SOAP (Simple Object Access Protocol) implementation called Soup, but the SOAP and non-SOAP parts have now been split into separate packages. libsoup uses the Glib main loop and is designed to work well with GTK applications. This enables GNOME applications to access HTTP servers on the network in a completely asynchronous fashion, very similar to the Gtk+ programming model (a synchronous operation mode is also supported for those who want it), but the SOAP parts were removed long ago. Security Fix(es): * libsoup: Integer Overflow in Cookie Expiration Date Handling in libsoup (CVE-2025-4945) For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.
AI Analysis
Technical Summary
The vulnerability CVE-2025-4945 in libsoup3 involves an integer overflow in the cookie expiration date handling code. Libsoup3 is a C-based HTTP library designed for asynchronous HTTP communication in GNOME applications. This integer overflow could potentially lead to incorrect processing of cookie expiration dates. Red Hat has released an official security advisory (RHSA-2025:19720) and corresponding package updates for Red Hat Enterprise Linux 10 to fix this issue.
Potential Impact
The integer overflow in cookie expiration date handling could cause incorrect behavior in libsoup3 when processing cookies. The security impact is rated as low by Red Hat Product Security. There are no known exploits in the wild at this time.
Mitigation Recommendations
An official security update is available from Red Hat for libsoup3 in Red Hat Enterprise Linux 10. Users should apply the update as described in the Red Hat advisory RHSA-2025:19720 and the referenced article https://access.redhat.com/articles/11258 to remediate the vulnerability.
Red Hat Security Advisory: libsoup3 security update
Description
Libsoup is an HTTP library implementation in C. It was originally part of a SOAP (Simple Object Access Protocol) implementation called Soup, but the SOAP and non-SOAP parts have now been split into separate packages. libsoup uses the Glib main loop and is designed to work well with GTK applications. This enables GNOME applications to access HTTP servers on the network in a completely asynchronous fashion, very similar to the Gtk+ programming model (a synchronous operation mode is also supported for those who want it), but the SOAP parts were removed long ago. Security Fix(es): * libsoup: Integer Overflow in Cookie Expiration Date Handling in libsoup (CVE-2025-4945) For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.
Affected software
Run on your own infrastructure? Check whether these packages are installed with threat-finder — our free open-source scanner.
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
The vulnerability CVE-2025-4945 in libsoup3 involves an integer overflow in the cookie expiration date handling code. Libsoup3 is a C-based HTTP library designed for asynchronous HTTP communication in GNOME applications. This integer overflow could potentially lead to incorrect processing of cookie expiration dates. Red Hat has released an official security advisory (RHSA-2025:19720) and corresponding package updates for Red Hat Enterprise Linux 10 to fix this issue.
Potential Impact
The integer overflow in cookie expiration date handling could cause incorrect behavior in libsoup3 when processing cookies. The security impact is rated as low by Red Hat Product Security. There are no known exploits in the wild at this time.
Mitigation Recommendations
An official security update is available from Red Hat for libsoup3 in Red Hat Enterprise Linux 10. Users should apply the update as described in the Red Hat advisory RHSA-2025:19720 and the referenced article https://access.redhat.com/articles/11258 to remediate the vulnerability.
Technical Details
- Gcve Source
- db.gcve.eu
- Csaf Category
- csaf_security_advisory
- Csaf Version
- 2.0
- Publisher
- Red Hat Product Security
- Advisory Id
- RHSA-2025:19720
- Cve Count
- 1
Threat ID: 6a3da1df4853345fc182b01b
Added to database: 06/25/2026, 21:47:11 UTC
Last enriched: 06/25/2026, 22:25:01 UTC
Last updated: 09/10/2026, 19:36:50 UTC
Views: 59
Community Reviews
0 reviewsCrowdsource mitigation strategies, share intel context, and vote on the most helpful responses. Sign in to add your voice and help keep defenders ahead.
Want to contribute mitigation steps or threat intel context? Sign in or create an account to join the community discussion.
Actions
Updates to AI analysis require Pro Console access. Upgrade inside Console → Billing.
Need more coverage?
Upgrade to Pro Console for AI refresh and higher limits.
For incident response and remediation, OffSeq services can help resolve threats faster.
Latest Threats
Check if your credentials are on the dark web
Instant breach scanning across billions of leaked records. Free tier available.