CVE-2025-4945 json
Libsoup: integer overflow in cookie expiration date handling in libsoup
published last yr. modified 3d ago also EUVD-2025-16034
- cvss
- 3.7
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.7%
- EPSS 0.7% chance of exploitation in 30 days, percentile 53%
- public exploits
- 0
- none known
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. The issue stems from improper validation of large integer inputs during date arithmetic operations within the cookie parsing routines.
Patch / fix
- Red Hat Red Hat Enterprise Linux 10 0:3.6.5-3.el10_0.9, 0:3.6.5-3.el10_1.6
- Red Hat Red Hat Enterprise Linux 7 Extended Lifecycle Support 0:2.62.2-9.el7_9
- Red Hat Red Hat Enterprise Linux 8 0:2.62.3-10.el8_10
- Red Hat Red Hat Enterprise Linux 8.2 Advanced Update Support 0:2.62.3-1.el8_2.6
- Red Hat Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support 0:2.62.3-2.el8_4.6
- Red Hat Red Hat Enterprise Linux 8.4 Extended Update Support Long-Life Add-On 0:2.62.3-2.el8_4.6
- Red Hat Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support 0:2.62.3-2.el8_6.6
- Red Hat Red Hat Enterprise Linux 8.6 Telecommunications Update Service 0:2.62.3-2.el8_6.6
- Red Hat Red Hat Enterprise Linux 8.6 Update Services for SAP Solutions 0:2.62.3-2.el8_6.6
- Red Hat Red Hat Enterprise Linux 8.8 Update Services for SAP Solutions 0:2.62.3-3.el8_8.6
- Red Hat Red Hat Enterprise Linux 9 0:2.72.0-10.el9_6.3, 0:2.72.0-12.el9_7.1
- Red Hat Red Hat Enterprise Linux 9.0 Update Services for SAP Solutions 0:2.72.0-8.el9_0.6
- Red Hat Red Hat Enterprise Linux 9.2 Update Services for SAP Solutions 0:2.72.0-8.el9_2.6
- Red Hat Red Hat Enterprise Linux 9.4 Extended Update Support 0:2.72.0-8.el9_4.6
- libsoup3 Debian 13 3.6.5-2
debian advisories DEBIAN-CVE-2025-4945
- libsoup3 Ubuntu 24.04 LTS 3.4.4-5ubuntu0.5
- libsoup3 Ubuntu 25.10 3.6.5-3
- libsoup2.4 Ubuntu 22.04 LTS 2.74.2-3ubuntu0.6
- libsoup2.4 Ubuntu 24.04 LTS 2.74.3-6ubuntu1.6
- libsoup2.4 Ubuntu 26.04 LTS, Ubuntu 25.10 2.74.3-10.1ubuntu4
- libsoup3 Ubuntu Pro 22.04 LTS 3.0.7-0ubuntu1+esm5
- libsoup2.4 Ubuntu Pro 16.04 LTS 2.52.2-1ubuntu0.3+esm5
- libsoup2.4 Ubuntu Pro 18.04 LTS 2.62.1-1ubuntu0.4+esm6
ubuntu advisories UBUNTU-CVE-2025-4945
Ubuntu security data © Canonical Ltd., from https://github.com/canonical/ubuntu-security-notices via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0
- libsoup3 RHEL 10.1 3.6.5-3.el10_1.6
- libsoup RHEL 9 2.72.0-12.el9_7.1
- libsoup3 RHEL 10.0 3.6.5-3.el10_0.9
- libsoup RHEL 9 2.72.0-10.el9_6.3
- libsoup RHEL 8 2.62.3-10.el8_10
- libsoup RHEL 8.2 AUS 2.62.3-1.el8_2.6
- libsoup RHEL 8.4 EUS_LONG_LIFE, RHEL 8.4 AUS 2.62.3-2.el8_4.6
- libsoup RHEL 8.8 E4S 2.62.3-3.el8_8.6
red hat advisories RHSA-2025:22013RHSA-2025:21772RHSA-2025:21665RHSA-2025:21666RHSA-2025:21664RHSA-2025:21657
- libsoup2 SLE Micro 5.5, SLE Micro 5.4, SLE Micro 5.3 2.74.2-150400.3.12.1
- libsoup Linux Micro 6.1 3.4.4-slfo.1.1_4.1
- libsoup2 SLE Module for Basesystem 15 SP7, SLE Module for Basesystem 15 SP6, openSUSE Leap 15.6 2.74.3-150600.4.12.1
- libsoup SLE Module for Basesystem 15 SP7, SLE Module for Basesystem 15 SP6, openSUSE Leap 15.6 3.4.4-150600.3.13.1
- libsoup SLE Micro 5.2 2.68.4-150200.4.12.1
- libsoup Linux Micro 6.0 3.4.2-8.1
- libsoup SLES LTSS Extended Security 12 SP5 2.62.2-5.18.1
suse advisories SUSE-SU-2025:03091-1SUSE-SU-2025:03026-1SUSE-SU-2025:20598-1SUSE-SU-2025:02277-1SUSE-SU-2025:02276-1SUSE-SU-2025:02212-1
- libsoup openSUSE Tumbleweed 3.6.5-6.1
- libsoup2 openSUSE Tumbleweed 2.74.3-12.1
opensuse advisories openSUSE-SU-2025:15241-1openSUSE-SU-2025:15242-1
- libsoup AlmaLinux 9 2.72.0-12.el9_7.1
- libsoup3 AlmaLinux 10 3.6.5-3.el10_1.6
- libsoup AlmaLinux 8 2.62.3-10.el8_10
almalinux advisories ALSA-2025:20959ALSA-2025:21032ALSA-2025:19714
- libsoup3 Rocky Linux 10 3.6.5-3.el10_1.6
- libsoup Rocky Linux 9 2.72.0-12.el9_7.1
- libsoup3 Rocky Linux 10 3.6.5-3.el10_0.9
- libsoup Rocky Linux 9 2.72.0-10.el9_6.3
- libsoup Rocky Linux 8 2.62.3-10.el8_10
rocky linux advisories RLSA-2025:21032RLSA-2025:20959RLSA-2025:19720RLSA-2025:19713RLSA-2025:19714
Is CVE-2025-4945 in your stack? Fencer shows which of your repositories are affected as soon as an advisory lands, and opens the fix as a pull request.
Check with FencerVendor advisories
What the vendors themselves say about their products: affected, fixed or not affected, and what to do.
red hat product security vex CVE-2025-4945 updated cvss 3.7
libsoup: Integer Overflow in Cookie Expiration Date Handling in libsoup
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Red Hat Enterprise Linux 6 libsoupaffected: workaround, no fix planned “Out of support scope”
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Red Hat Enterprise Linux AppStream (v. 8) libsoup-devel 2.62.3-10.el8_10, libsoup-debuginfo 2.62.3-10.el8_10, libsoup-debugsource 2.62.3-10.el8_10fixed: vendor fix RHSA-2025:19714
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Red Hat Enterprise Linux AppStream (v. 9) libsoup 2.72.0-10.el9_6.3, libsoup 2.72.0-12.el9_7.1fixed: vendor fix RHSA-2025:19713
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Red Hat Enterprise Linux AppStream (v. 10) libsoup3 3.6.5-3.el10_0.9, libsoup3 3.6.5-3.el10_1.6fixed: vendor fix RHSA-2025:19720
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Red Hat Enterprise Linux AppStream AUS (v. 8.2) libsoup-devel 2.62.3-1.el8_2.6, libsoup-debuginfo 2.62.3-1.el8_2.6, libsoup-debugsource 2.62.3-1.el8_2.6fixed: vendor fix RHSA-2025:22013
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Red Hat Enterprise Linux AppStream AUS (v.8.4) libsoup-devel 2.62.3-2.el8_4.6, libsoup-debuginfo 2.62.3-2.el8_4.6, libsoup-debugsource 2.62.3-2.el8_4.6fixed: vendor fix RHSA-2025:21772
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Red Hat Enterprise Linux AppStream AUS (v.8.6) libsoup-devel 2.62.3-2.el8_6.6, libsoup-debuginfo 2.62.3-2.el8_6.6, libsoup-debugsource 2.62.3-2.el8_6.6 Red Hat Enterprise Linux AppStream E4S (v.8.6) libsoup-devel 2.62.3-2.el8_6.6, libsoup-debuginfo 2.62.3-2.el8_6.6, libsoup-debugsource 2.62.3-2.el8_6.6fixed: vendor fix RHSA-2025:21664
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Red Hat Enterprise Linux AppStream E4S (v.8.8) libsoup-devel 2.62.3-3.el8_8.6, libsoup-debuginfo 2.62.3-3.el8_8.6, libsoup-debugsource 2.62.3-3.el8_8.6fixed: vendor fix RHSA-2025:21665
show 14 moreshow fewer
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Red Hat Enterprise Linux AppStream E4S (v.9.0) libsoup 2.72.0-8.el9_0.6fixed: vendor fix RHSA-2025:21656
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Red Hat Enterprise Linux AppStream E4S (v.9.2) libsoup 2.72.0-8.el9_2.6fixed: vendor fix RHSA-2025:21655
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Red Hat Enterprise Linux AppStream EUS (v.9.4) libsoup 2.72.0-8.el9_4.6fixed: vendor fix RHSA-2025:21666
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Red Hat Enterprise Linux AppStream EUS EXTENSION (v.8.4) libsoup-devel 2.62.3-2.el8_4.6, libsoup-debuginfo 2.62.3-2.el8_4.6, libsoup-debugsource 2.62.3-2.el8_4.6fixed: vendor fix RHSA-2025:21772
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Red Hat Enterprise Linux AppStream TUS (v.8.6) libsoup-devel 2.62.3-2.el8_6.6, libsoup-debuginfo 2.62.3-2.el8_6.6, libsoup-debugsource 2.62.3-2.el8_6.6fixed: vendor fix RHSA-2025:21664
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Red Hat Enterprise Linux BaseOS (v. 8) libsoup 2.62.3-10.el8_10fixed: vendor fix RHSA-2025:19714
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Red Hat Enterprise Linux BaseOS AUS (v. 8.2) libsoup 2.62.3-1.el8_2.6fixed: vendor fix RHSA-2025:22013
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Red Hat Enterprise Linux BaseOS AUS (v.8.4) libsoup 2.62.3-2.el8_4.6fixed: vendor fix RHSA-2025:21772
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Red Hat Enterprise Linux BaseOS AUS (v.8.6) libsoup 2.62.3-2.el8_6.6 Red Hat Enterprise Linux BaseOS E4S (v.8.6) libsoup 2.62.3-2.el8_6.6fixed: vendor fix RHSA-2025:21664
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Red Hat Enterprise Linux BaseOS E4S (v.8.8) libsoup 2.62.3-3.el8_8.6fixed: vendor fix RHSA-2025:21665
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Red Hat Enterprise Linux BaseOS EUS EXTENSION (v.8.4) libsoup 2.62.3-2.el8_4.6fixed: vendor fix RHSA-2025:21772
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Red Hat Enterprise Linux BaseOS TUS (v.8.6) libsoup 2.62.3-2.el8_6.6fixed: vendor fix RHSA-2025:21664
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Red Hat Enterprise Linux CodeReady Linux Builder (v. 10) libsoup3-doc 3.6.5-3.el10_0.9, libsoup3-doc 3.6.5-3.el10_1.6fixed: vendor fix RHSA-2025:19720
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Red Hat Enterprise Linux Server (v. 7 ELS) libsoup 2.62.2-9.el7_9fixed: vendor fix RHSA-2025:21657
Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf
CISA SSVC
- Exploitation
- Proof of concept is public
- Automatable
- no
- Technical impact
- partial
- Assessed
- 7mo ago
Exploit prediction
0.70% chance of exploitation in the next 30 days, higher than 53% of all scored CVEs (FIRST EPSS, 2026-11-09).
Exploits and checks
- gitlab.gnome.org https://gitlab.gnome.org/GNOME/libsoup/-/issues/448 referenced PoC, tagged "exploit" by a source, unverified
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 3.1 | 3.7 | CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:N |
Affected products
- gitlab.gnome.org libsoup
- Red Hat Red Hat Enterprise Linux 10
- Red Hat Red Hat Enterprise Linux 7 Extended Lifecycle Support
- Red Hat Red Hat Enterprise Linux 8
- Red Hat Red Hat Enterprise Linux 8.2 Advanced Update Support
- Red Hat Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support
- Red Hat Red Hat Enterprise Linux 8.4 Extended Update Support Long-Life Add-On
- Red Hat Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support
- Red Hat Red Hat Enterprise Linux 8.6 Telecommunications Update Service
- Red Hat Red Hat Enterprise Linux 8.6 Update Services for SAP Solutions
- Red Hat Red Hat Enterprise Linux 8.8 Update Services for SAP Solutions
- Red Hat Red Hat Enterprise Linux 9
- Red Hat Red Hat Enterprise Linux 9.0 Update Services for SAP Solutions
- Red Hat Red Hat Enterprise Linux 9.2 Update Services for SAP Solutions
- Red Hat Red Hat Enterprise Linux 9.4 Extended Update Support
- Red Hat Red Hat Enterprise Linux 6
Classification
- Weakness
-
- CWE-190 Integer Overflow or Wraparound
References
-
gitlab.gnome.org
/GNOME/libsoup/-/issues/448
exploit
-
access.redhat.com
/errata/RHSA-2025:19713
vendor-advisory
-
access.redhat.com
/errata/RHSA-2025:19714
vendor-advisory
-
access.redhat.com
/errata/RHSA-2025:19720
vendor-advisory
-
access.redhat.com
/errata/RHSA-2025:20959
vendor-advisory
-
access.redhat.com
/errata/RHSA-2025:21032
vendor-advisory
-
access.redhat.com
/errata/RHSA-2025:21655
vendor-advisory
-
access.redhat.com
/errata/RHSA-2025:21656
vendor-advisory
-
access.redhat.com
/errata/RHSA-2025:21657
vendor-advisory
-
access.redhat.com
/errata/RHSA-2025:21664
vendor-advisory
-
access.redhat.com
/errata/RHSA-2025:21665
vendor-advisory
-
access.redhat.com
/errata/RHSA-2025:21666
vendor-advisory
-
access.redhat.com
/errata/RHSA-2025:21772
vendor-advisory
-
access.redhat.com
/errata/RHSA-2025:22013
vendor-advisory
-
access.redhat.com
/security/cve/CVE-2025-4945
vdb-entry
-
bugzilla.redhat.com
/show_bug.cgi?id=2367175
issue-tracking
Sources
- CVE List CVE-2025-4945
- NVD CVE-2025-4945
Fencer Intel keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.