Log in Start free

Vulnerability · Published Sep 26, 2025 · Assigned by redhat

CVE-2025-11021Libsoup: out-of-bounds read in cookie date handling of libsoup http library

High 7.5

In plain English

A high-severity out-of-bounds read in libsoup. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.6% (higher than 51% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.

Severity (CVSS 3.1)7.5High
Exploit odds (30 days)0.6%top 49.3% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known

Official 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.

Affected packages & fixed versions

EcosystemPackageFixed inAdvisory
AlmaLinux:8libsoup2.62.3-10.el8_10ALSA-2025:19714
AlmaLinux:9libsoup2.72.0-12.el9_7.1ALSA-2025:20959
AlmaLinux:8libsoup-devel2.62.3-10.el8_10ALSA-2025:19714
AlmaLinux:9libsoup-devel2.72.0-12.el9_7.1ALSA-2025:20959
AlmaLinux:10libsoup33.6.5-3.el10_1.6ALSA-2025:21032
AlmaLinux:10libsoup3-devel3.6.5-3.el10_1.6ALSA-2025:21032
AlmaLinux:10libsoup3-doc3.6.5-3.el10_0.7ALSA-2025:18183
AlmaLinux:10libsoup3-doc3.6.5-3.el10_1.6ALSA-2025:21032
Debian:12libsoup3no fix listedDEBIAN-CVE-2025-11021
Debian:13libsoup3no fix listedDEBIAN-CVE-2025-11021
Rocky Linux:8libsoup0:2.62.3-10.el8_10RLSA-2025:19714
Rocky Linux:9libsoup0:2.72.0-12.el9_7.1RLSA-2025:20959
Rocky Linux:9libsoup0:2.72.0-10.el9_6.3RLSA-2025:19713
Rocky Linux:10libsoup30:3.6.5-3.el10_1.6RLSA-2025:21032
Rocky Linux:10libsoup30:3.6.5-3.el10_0.7RLSA-2025:18183
Ubuntu:22.04:LTSlibsoup2.42.74.2-3ubuntu0.6UBUNTU-CVE-2025-11021
Ubuntu:24.04:LTSlibsoup2.42.74.3-6ubuntu1.6UBUNTU-CVE-2025-11021
Ubuntu:25.10libsoup2.42.74.3-10.1ubuntu4UBUNTU-CVE-2025-11021
Ubuntu:26.04:LTSlibsoup2.42.74.3-10.1ubuntu4UBUNTU-CVE-2025-11021
Ubuntu:24.04:LTSlibsoup33.4.4-5ubuntu0.5UBUNTU-CVE-2025-11021
Ubuntu:25.10libsoup33.6.5-3UBUNTU-CVE-2025-11021

Affected products (as reported)

VendorProductVersions
libsoup 0 – through 3.6.5
Red Hat Red Hat Enterprise Linux 10 see references
Red Hat Red Hat Enterprise Linux 10 see references
Red Hat Red Hat Enterprise Linux 7 Extended Lifecycle Support see references
Red Hat Red Hat Enterprise Linux 8 see references
Red Hat Red Hat Enterprise Linux 8 see references
Red Hat Red Hat Enterprise Linux 8.2 Advanced Update Support see references
Red Hat Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support see references
Red Hat Red Hat Enterprise Linux 8.4 Extended Update Support Long-Life Add-On see references
Red Hat Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support see references
Red Hat Red Hat Enterprise Linux 8.6 Telecommunications Update Service see references
Red Hat Red Hat Enterprise Linux 8.6 Update Services for SAP Solutions see references
Red Hat Red Hat Enterprise Linux 8.8 Update Services for SAP Solutions see references
Red Hat Red Hat Enterprise Linux 9 see references
Red Hat Red Hat Enterprise Linux 9 see references
Red Hat Red Hat Enterprise Linux 9.0 Update Services for SAP Solutions see references
Red Hat Red Hat Enterprise Linux 9.2 Update Services for SAP Solutions see references
Red Hat Red Hat Enterprise Linux 9.4 Extended Update Support see references
Red Hat Red Hat Enterprise Linux 6 see references

Weakness: CWE-125 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

References