Libsoup: out-of-bounds read in cookie date handling of libsoup http library
Priority MEDIUM 40CWE-125Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Information disclosure
- Confidentiality · integrity · availability
- High · None · None
- Fix status
- Partial Red Hat: 23 fixed, 1 without a fix
Attack profile from CVSS 3.1 · CNA. Fix status from CNA and Red Hat. Impact type from CWE-125 and the CVSS impact.
Summary
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.
Why it matters now
Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00636 50th percentileScored 2026-11-07
Fix Partial Red Hat: 13 advisoriesRed Hat: 23 fixed, 1 without a fix
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- Yes
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| — | libsoup | up to 3.6.5 | — | No fix listed | CNA |
| Red Hat | Red Hat Enterprise Linux 10 | — | 3.6.5-3.el10_0.7 | Patch available | CNA |
| Red Hat | Red Hat Enterprise Linux 10 | — | 3.6.5-3.el10_1.6 | Patch available | CNA |
| Red Hat | Red Hat Enterprise Linux 7 Extended Lifecycle Support | — | 2.62.2-9.el7_9 | Patch available | CNA |
| Red Hat | Red Hat Enterprise Linux 8 | — | 2.62.3-10.el8_10 | Patch available | CNA |
| Red Hat | Red Hat Enterprise Linux 8 | — | 2.62.3-10.el8_10 | Patch available | CNA |
| Red Hat | Red Hat Enterprise Linux 8.2 Advanced Update Support | — | 2.62.3-1.el8_2.6 | Patch available | CNA |
| Red Hat | Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support | — | 2.62.3-2.el8_4.6 | Patch available | CNA |
| Red Hat | Red Hat Enterprise Linux 8.4 Extended Update Support Long-Life Add-On | — | 2.62.3-2.el8_4.6 | Patch available | CNA |
| Red Hat | Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support | — | 2.62.3-2.el8_6.6 | Patch available | CNA |
| Red Hat | Red Hat Enterprise Linux 8.6 Telecommunications Update Service | — | 2.62.3-2.el8_6.6 | Patch available | CNA |
| Red Hat | Red Hat Enterprise Linux 8.6 Update Services for SAP Solutions | — | 2.62.3-2.el8_6.6 | Patch available | CNA |
| Red Hat | Red Hat Enterprise Linux 8.8 Update Services for SAP Solutions | — | 2.62.3-3.el8_8.6 | Patch available | CNA |
| Red Hat | Red Hat Enterprise Linux 9 | — | 2.72.0-10.el9_6.3 | Patch available | CNA |
| Red Hat | Red Hat Enterprise Linux 9 | — | 2.72.0-12.el9_7.1 | Patch available | CNA |
| Red Hat | Red Hat Enterprise Linux 9.0 Update Services for SAP Solutions | — | 2.72.0-8.el9_0.6 | Patch available | CNA |
| Red Hat | Red Hat Enterprise Linux 9.2 Update Services for SAP Solutions | — | 2.72.0-8.el9_2.6 | Patch available | CNA |
| Red Hat | Red Hat Enterprise Linux 9.4 Extended Update Support | — | 2.72.0-8.el9_4.6 | Patch available | CNA |
| Red Hat | Red Hat Enterprise Linux 6 | — | — | No fix listed | CNA |
- libsoup Vendor— Affected up to 3.6.5 Fixed in — No fix listed CNA
- Red Hat Enterprise Linux 10 VendorRed Hat Affected — Fixed in 3.6.5-3.el10_0.7 Patch available CNA
- Red Hat Enterprise Linux 10 VendorRed Hat Affected — Fixed in 3.6.5-3.el10_1.6 Patch available CNA
- Red Hat Enterprise Linux 7 Extended Lifecycle Support VendorRed Hat Affected — Fixed in 2.62.2-9.el7_9 Patch available CNA
- Red Hat Enterprise Linux 8 VendorRed Hat Affected — Fixed in 2.62.3-10.el8_10 Patch available CNA
- Red Hat Enterprise Linux 8 VendorRed Hat Affected — Fixed in 2.62.3-10.el8_10 Patch available CNA
- Red Hat Enterprise Linux 8.2 Advanced Update Support VendorRed Hat Affected — Fixed in 2.62.3-1.el8_2.6 Patch available CNA
- Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support VendorRed Hat Affected — Fixed in 2.62.3-2.el8_4.6 Patch available CNA
- Red Hat Enterprise Linux 8.4 Extended Update Support Long-Life Add-On VendorRed Hat Affected — Fixed in 2.62.3-2.el8_4.6 Patch available CNA
- Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support VendorRed Hat Affected — Fixed in 2.62.3-2.el8_6.6 Patch available CNA
- Red Hat Enterprise Linux 8.6 Telecommunications Update Service VendorRed Hat Affected — Fixed in 2.62.3-2.el8_6.6 Patch available CNA
- Red Hat Enterprise Linux 8.6 Update Services for SAP Solutions VendorRed Hat Affected — Fixed in 2.62.3-2.el8_6.6 Patch available CNA
- Red Hat Enterprise Linux 8.8 Update Services for SAP Solutions VendorRed Hat Affected — Fixed in 2.62.3-3.el8_8.6 Patch available CNA
- Red Hat Enterprise Linux 9 VendorRed Hat Affected — Fixed in 2.72.0-10.el9_6.3 Patch available CNA
- Red Hat Enterprise Linux 9 VendorRed Hat Affected — Fixed in 2.72.0-12.el9_7.1 Patch available CNA
- Red Hat Enterprise Linux 9.0 Update Services for SAP Solutions VendorRed Hat Affected — Fixed in 2.72.0-8.el9_0.6 Patch available CNA
- Red Hat Enterprise Linux 9.2 Update Services for SAP Solutions VendorRed Hat Affected — Fixed in 2.72.0-8.el9_2.6 Patch available CNA
- Red Hat Enterprise Linux 9.4 Extended Update Support VendorRed Hat Affected — Fixed in 2.72.0-8.el9_4.6 Patch available CNA
- Red Hat Enterprise Linux 6 VendorRed Hat Affected — Fixed in — No fix listed CNA
CPE names CNA · 24
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:/o:redhat:enterprise_linux:10.0 | 10.0 | — | Red Hat |
| cpe:/o:redhat:enterprise_linux:10.1 | 10.1 | — | Red Hat |
| cpe:/o:redhat:rhel_els:7 | 7 | — | Red Hat |
| cpe:/a:redhat:enterprise_linux:8::appstream | 8 | — | Red Hat |
| cpe:/o:redhat:enterprise_linux:8::baseos | 8 | — | Red Hat |
| cpe:/a:redhat:rhel_aus:8.2::appstream | 8.2 | — | Red Hat |
| cpe:/o:redhat:rhel_aus:8.2::baseos | 8.2 | — | Red Hat |
| cpe:/a:redhat:rhel_aus:8.4::appstream | 8.4 | — | Red Hat |
| cpe:/a:redhat:rhel_eus_long_life:8.4::appstream | 8.4 | — | Red Hat |
| cpe:/o:redhat:rhel_aus:8.4::baseos | 8.4 | — | Red Hat |
- cpe:/o:redhat:enterprise_linux:10.0 Versions 10.0 — ·Red Hat
- cpe:/o:redhat:enterprise_linux:10.1 Versions 10.1 — ·Red Hat
- cpe:/o:redhat:rhel_els:7 Versions 7 — ·Red Hat
- cpe:/a:redhat:enterprise_linux:8::appstream Versions 8 — ·Red Hat
- cpe:/o:redhat:enterprise_linux:8::baseos Versions 8 — ·Red Hat
- cpe:/a:redhat:rhel_aus:8.2::appstream Versions 8.2 — ·Red Hat
- cpe:/o:redhat:rhel_aus:8.2::baseos Versions 8.2 — ·Red Hat
- cpe:/a:redhat:rhel_aus:8.4::appstream Versions 8.4 — ·Red Hat
- cpe:/a:redhat:rhel_eus_long_life:8.4::appstream Versions 8.4 — ·Red Hat
- cpe:/o:redhat:rhel_aus:8.4::baseos Versions 8.4 — ·Red Hat
Show 14 more CPE
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:/o:redhat:rhel_eus_long_life:8.4::baseos | 8.4 | — | Red Hat |
| cpe:/a:redhat:rhel_aus:8.6::appstream | 8.6 | — | Red Hat |
| cpe:/a:redhat:rhel_e4s:8.6::appstream | 8.6 | — | Red Hat |
| cpe:/a:redhat:rhel_tus:8.6::appstream | 8.6 | — | Red Hat |
| cpe:/o:redhat:rhel_aus:8.6::baseos | 8.6 | — | Red Hat |
| cpe:/o:redhat:rhel_e4s:8.6::baseos | 8.6 | — | Red Hat |
| cpe:/o:redhat:rhel_tus:8.6::baseos | 8.6 | — | Red Hat |
| cpe:/a:redhat:rhel_e4s:8.8::appstream | 8.8 | — | Red Hat |
| cpe:/o:redhat:rhel_e4s:8.8::baseos | 8.8 | — | Red Hat |
| cpe:/a:redhat:enterprise_linux:9::appstream | 9 | — | Red Hat |
| cpe:/a:redhat:rhel_e4s:9.0::appstream | 9.0 | — | Red Hat |
| cpe:/a:redhat:rhel_e4s:9.2::appstream | 9.2 | — | Red Hat |
| cpe:/a:redhat:rhel_eus:9.4::appstream | 9.4 | — | Red Hat |
| cpe:/o:redhat:rhel_els:6 | 6 | — | Red Hat |
- cpe:/o:redhat:rhel_eus_long_life:8.4::baseos Versions 8.4 — ·Red Hat
- cpe:/a:redhat:rhel_aus:8.6::appstream Versions 8.6 — ·Red Hat
- cpe:/a:redhat:rhel_e4s:8.6::appstream Versions 8.6 — ·Red Hat
- cpe:/a:redhat:rhel_tus:8.6::appstream Versions 8.6 — ·Red Hat
- cpe:/o:redhat:rhel_aus:8.6::baseos Versions 8.6 — ·Red Hat
- cpe:/o:redhat:rhel_e4s:8.6::baseos Versions 8.6 — ·Red Hat
- cpe:/o:redhat:rhel_tus:8.6::baseos Versions 8.6 — ·Red Hat
- cpe:/a:redhat:rhel_e4s:8.8::appstream Versions 8.8 — ·Red Hat
- cpe:/o:redhat:rhel_e4s:8.8::baseos Versions 8.8 — ·Red Hat
- cpe:/a:redhat:enterprise_linux:9::appstream Versions 9 — ·Red Hat
- cpe:/a:redhat:rhel_e4s:9.0::appstream Versions 9.0 — ·Red Hat
- cpe:/a:redhat:rhel_e4s:9.2::appstream Versions 9.2 — ·Red Hat
- cpe:/a:redhat:rhel_eus:9.4::appstream Versions 9.4 — ·Red Hat
- cpe:/o:redhat:rhel_els:6 Versions 6 — ·Red Hat
Remediation
Red Hat 13 advisories
- RHSA-2025:22013 Released 2025-11-25 · Red Hat rating Importantlibsoup security update
- Red Hat Enterprise Linux AppStream AUS (v. 8.2) libsoup-devel-2.62.3-1.el8_2.6
- Red Hat Enterprise Linux BaseOS AUS (v. 8.2) libsoup-2.62.3-1.el8_2.6
- RHSA-2025:21772 Released 2025-11-19 · Red Hat rating Importantlibsoup security update
- Red Hat Enterprise Linux AppStream AUS (v.8.4) libsoup-devel-2.62.3-2.el8_4.6
- Red Hat Enterprise Linux AppStream EUS EXTENSION (v.8.4) libsoup-devel-2.62.3-2.el8_4.6
- Red Hat Enterprise Linux BaseOS AUS (v.8.4) libsoup-2.62.3-2.el8_4.6
- Red Hat Enterprise Linux BaseOS EUS EXTENSION (v.8.4) libsoup-2.62.3-2.el8_4.6
- RHSA-2025:21666 Released 2025-11-18 · Red Hat rating Importantlibsoup security update
- Red Hat Enterprise Linux AppStream EUS (v.9.4) libsoup-2.72.0-8.el9_4.6, libsoup-devel-2.72.0-8.el9_4.6
Show 10 more Red Hat advisories
- RHSA-2025:21665 Released 2025-11-18 · Red Hat rating Importantlibsoup security update
- Red Hat Enterprise Linux AppStream E4S (v.8.8) libsoup-devel-2.62.3-3.el8_8.6
- Red Hat Enterprise Linux BaseOS E4S (v.8.8) libsoup-2.62.3-3.el8_8.6
- RHSA-2025:21664 Released 2025-11-18 · Red Hat rating Importantlibsoup security update
- Red Hat Enterprise Linux AppStream AUS (v.8.6) libsoup-devel-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
- Red Hat Enterprise Linux AppStream TUS (v.8.6) libsoup-devel-2.62.3-2.el8_6.6
- 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_6.6
- Red Hat Enterprise Linux BaseOS TUS (v.8.6) libsoup-2.62.3-2.el8_6.6
- RHSA-2025:21657 Released 2025-11-18 · Red Hat rating Importantlibsoup security update
- Red Hat Enterprise Linux Server (v. 7 ELS) libsoup-2.62.2-9.el7_9, libsoup-2.62.2-9.el7_9.ppc, libsoup-devel-2.62.2-9.el7_9 +1
- RHSA-2025:21656 Released 2025-11-18 · Red Hat rating Importantlibsoup security update
- Red Hat Enterprise Linux AppStream E4S (v.9.0) libsoup-2.72.0-8.el9_0.6, libsoup-devel-2.72.0-8.el9_0.6
- RHSA-2025:21655 Released 2025-11-18 · Red Hat rating Importantlibsoup security update
- Red Hat Enterprise Linux AppStream E4S (v.9.2) libsoup-2.72.0-8.el9_2.6, libsoup-devel-2.72.0-8.el9_2.6
- RHSA-2025:21032 Released 2025-11-11 · Red Hat rating Importantlibsoup3 security update
- Red Hat Enterprise Linux AppStream (v. 10) libsoup3-3.6.5-3.el10_1.6, libsoup3-devel-3.6.5-3.el10_1.6
- Red Hat Enterprise Linux CodeReady Linux Builder (v. 10) libsoup3-doc-3.6.5-3.el10_1.6
- RHSA-2025:20959 Released 2025-11-11 · Red Hat rating Importantlibsoup security update
- Red Hat Enterprise Linux AppStream (v. 9) libsoup-2.72.0-12.el9_7.1, libsoup-devel-2.72.0-12.el9_7.1
- RHSA-2025:19713 Released 2025-11-04 · Red Hat rating Importantlibsoup security update
- Red Hat Enterprise Linux AppStream (v. 9) libsoup-2.72.0-10.el9_6.3, libsoup-devel-2.72.0-10.el9_6.3
- RHSA-2025:19714 Released 2025-11-04 · Red Hat rating Importantlibsoup security update
- Red Hat Enterprise Linux AppStream (v. 8) libsoup-devel-2.62.3-10.el8_10
- Red Hat Enterprise Linux BaseOS (v. 8) libsoup-2.62.3-10.el8_10
- RHSA-2025:18183 Released 2025-10-15 · Red Hat rating Importantlibsoup3 security update
- Red Hat Enterprise Linux AppStream (v. 10) libsoup3-3.6.5-3.el10_0.7, libsoup3-devel-3.6.5-3.el10_0.7
- Red Hat Enterprise Linux CodeReady Linux Builder (v. 10) libsoup3-doc-3.6.5-3.el10_0.7
Vendor assessments
Red Hat
Red Hat rating: Important. Red Hat's page for this CVE →
| Product | Status | Plan or fix |
|---|---|---|
| Red Hat Enterprise Linux 6 | Affected | No fix planned: Out of support scope |
| Red Hat Enterprise Linux AppStream (v. 10) | Fixed | RHSA-2025:18183, RHSA-2025:21032 |
| Red Hat Enterprise Linux AppStream (v. 8) | Fixed | RHSA-2025:19714 |
| Red Hat Enterprise Linux AppStream (v. 9) | Fixed | RHSA-2025:19713, RHSA-2025:20959 |
| Red Hat Enterprise Linux AppStream AUS (v. 8.2) | Fixed | RHSA-2025:22013 |
| Red Hat Enterprise Linux AppStream AUS (v.8.4) | Fixed | RHSA-2025:21772 |
| Red Hat Enterprise Linux AppStream AUS (v.8.6) | Fixed | RHSA-2025:21664 |
| Red Hat Enterprise Linux AppStream E4S (v.8.6) | Fixed | RHSA-2025:21664 |
| Red Hat Enterprise Linux AppStream E4S (v.8.8) | Fixed | RHSA-2025:21665 |
| Red Hat Enterprise Linux AppStream E4S (v.9.0) | Fixed | RHSA-2025:21656 |
| Red Hat Enterprise Linux AppStream E4S (v.9.2) | Fixed | RHSA-2025:21655 |
| Red Hat Enterprise Linux AppStream EUS (v.9.4) | Fixed | RHSA-2025:21666 |
| Red Hat Enterprise Linux AppStream EUS EXTENSION (v.8.4) | Fixed | RHSA-2025:21772 |
| Red Hat Enterprise Linux AppStream TUS (v.8.6) | Fixed | RHSA-2025:21664 |
| Red Hat Enterprise Linux BaseOS (v. 8) | Fixed | RHSA-2025:19714 |
| Red Hat Enterprise Linux BaseOS AUS (v. 8.2) | Fixed | RHSA-2025:22013 |
| Red Hat Enterprise Linux BaseOS AUS (v.8.4) | Fixed | RHSA-2025:21772 |
| Red Hat Enterprise Linux BaseOS AUS (v.8.6) | Fixed | RHSA-2025:21664 |
| Red Hat Enterprise Linux BaseOS E4S (v.8.6) | Fixed | RHSA-2025:21664 |
| Red Hat Enterprise Linux BaseOS E4S (v.8.8) | Fixed | RHSA-2025:21665 |
| Red Hat Enterprise Linux BaseOS EUS EXTENSION (v.8.4) | Fixed | RHSA-2025:21772 |
| Red Hat Enterprise Linux BaseOS TUS (v.8.6) | Fixed | RHSA-2025:21664 |
| Red Hat Enterprise Linux CodeReady Linux Builder (v. 10) | Fixed | RHSA-2025:18183, RHSA-2025:21032 |
| Red Hat Enterprise Linux Server (v. 7 ELS) | Fixed | RHSA-2025:21657 |
Timeline
- 2026-10-02 Threatist record created from CVE-2025-11021
- 2026-10-03 Alias added: GHSA-fjfx-vwp2-gqr8
- 2026-10-25 EPSS moved to the 50th–90th percentile
References
Advisory 13
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Sources
- CVE-2025-11021 · CVE Program
- CVE-2025-11021 · NVD
- FIRST EPSS
- GHSA-fjfx-vwp2-gqr8 · GitHub Advisory Database · CC BY 4.0
- CVE-2025-11021 · Red Hat security data · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences