CVE-2025-11021

Libsoup: out-of-bounds read in cookie date handling of libsoup http library

State: Published
Severity: 7.5 High
Published: Sep 26, 2025
Updated: Jun 29, 2026
Reserved: Sep 26, 2025

Description

A flaw was found in the cookie date handling logic of the libsoup HTTP library, widely used by GNOME and other applications for web communication. When processing cookies with specially crafted expiration dates, the library may perform an out-of-bounds memory read. This flaw could result in unintended disclosure of memory contents, potentially exposing sensitive information from the process using libsoup.

Scores

CVSS	Score	Vector	Source
3.1	7.5 High	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N	redhat

Weaknesses

CWE-125 Out-of-bounds Read

Affected Products

Product	Versions
libsoup	3.6.5 and earlierAffected
Red Hat Enterprise Linux 10Red Hat	0:3.6.5-3.el10_0.7 and laterNot affected
Red Hat Enterprise Linux 10Red Hat	0:3.6.5-3.el10_1.6 and laterNot affected
Red Hat Enterprise Linux 7 Extended Lifecycle SupportRed Hat	0:2.62.2-9.el7_9 and laterNot affected
Red Hat Enterprise Linux 8Red Hat	0:2.62.3-10.el8_10 and laterNot affected
Red Hat Enterprise Linux 8Red Hat	0:2.62.3-10.el8_10 and laterNot affected
Red Hat Enterprise Linux 8.2 Advanced Update SupportRed Hat	0:2.62.3-1.el8_2.6 and laterNot affected
Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update SupportRed Hat	0:2.62.3-2.el8_4.6 and laterNot affected
Red Hat Enterprise Linux 8.4 Extended Update Support Long-Life Add-OnRed Hat	0:2.62.3-2.el8_4.6 and laterNot affected
Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update SupportRed Hat	0:2.62.3-2.el8_6.6 and laterNot affected
Red Hat Enterprise Linux 8.6 Telecommunications Update ServiceRed Hat	0:2.62.3-2.el8_6.6 and laterNot affected
Red Hat Enterprise Linux 8.6 Update Services for SAP SolutionsRed Hat	0:2.62.3-2.el8_6.6 and laterNot affected
Red Hat Enterprise Linux 8.8 Update Services for SAP SolutionsRed Hat	0:2.62.3-3.el8_8.6 and laterNot affected
Red Hat Enterprise Linux 9Red Hat	0:2.72.0-10.el9_6.3 and laterNot affected
Red Hat Enterprise Linux 9Red Hat	0:2.72.0-12.el9_7.1 and laterNot affected
Red Hat Enterprise Linux 9.0 Update Services for SAP SolutionsRed Hat	0:2.72.0-8.el9_0.6 and laterNot affected
Red Hat Enterprise Linux 9.2 Update Services for SAP SolutionsRed Hat	0:2.72.0-8.el9_2.6 and laterNot affected
Red Hat Enterprise Linux 9.4 Extended Update SupportRed Hat	0:2.72.0-8.el9_4.6 and laterNot affected
Red Hat Enterprise Linux 6Red Hat

References

RHSA-2025:18183vendor-advisory
RHSA-2025:19713vendor-advisory
RHSA-2025:19714vendor-advisory
RHSA-2025:20959vendor-advisory
RHSA-2025:21032vendor-advisory
RHSA-2025:21655vendor-advisory
RHSA-2025:21656vendor-advisory
RHSA-2025:21657vendor-advisory
RHSA-2025:21664vendor-advisory
RHSA-2025:21665vendor-advisory
RHSA-2025:21666vendor-advisory
RHSA-2025:21772vendor-advisory
RHSA-2025:22013vendor-advisory
https://access.redhat.com/security/cve/CVE-2025-11021vdb-entry
RHBZ#2399627issue-tracking
https://gitlab.gnome.org/GNOME/libsoup/-/issues/459

Every record here comes from the CVE Program’s CVE List. © 1999–2026 The MITRE Corporation. CVE is a registered trademark of The MITRE Corporation. The records are reproduced under the CVE Program terms of use.