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Vulnerability · Published Feb 2, 2026 · Assigned by redhat

CVE-2026-1761Libsoup: stack-based buffer overflow in libsoup multipart response parsingmultipart http response

High 8.6

In plain English

A high-severity stack buffer overflow in Red Hat Enterprise Linux 10 from Red Hat. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 1.1% (higher than 65% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.

Severity (CVSS 3.1)8.6High
Exploit odds (30 days)1.1%top 35.3% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known

Official description

A flaw was found in libsoup. This stack-based buffer overflow vulnerability occurs during the parsing of multipart HTTP responses due to an incorrect length calculation. A remote attacker can exploit this by sending a specially crafted multipart HTTP response, which can lead to memory corruption. This issue may result in application crashes or arbitrary code execution in applications that process untrusted server responses, and it does not require authentication or user interaction.

Affected packages & fixed versions

EcosystemPackageFixed inAdvisory
AlmaLinux:8libsoup2.62.3-13.el8_10ALSA-2026:2215
AlmaLinux:9libsoup2.72.0-12.el9_7.5ALSA-2026:2216
AlmaLinux:8libsoup-devel2.62.3-13.el8_10ALSA-2026:2215
AlmaLinux:9libsoup-devel2.72.0-12.el9_7.5ALSA-2026:2216
AlmaLinux:10libsoup3-doc3.6.5-3.el10_1.9ALSA-2026:2182
AlmaLinux:10libsoup3-doc3.6.5-3.el10_1.10ALSA-2026:2410
Debian:12libsoup2.4no fix listedDEBIAN-CVE-2026-1761
Debian:13libsoup2.4no fix listedDEBIAN-CVE-2026-1761
Debian:12libsoup3no fix listedDEBIAN-CVE-2026-1761
Debian:13libsoup3no fix listedDEBIAN-CVE-2026-1761
Rocky Linux:8libsoup0:2.62.3-13.el8_10RLSA-2026:2215
Rocky Linux:9libsoup0:2.72.0-12.el9_7.5RLSA-2026:2216
Rocky Linux:10libsoup30:3.6.5-3.el10_1.10RLSA-2026:2410
Rocky Linux:10libsoup30:3.6.5-3.el10_1.9RLSA-2026:2182
Rocky Linux:8spice-client-win0:8.10-7.el8_10RLSA-2026:2214
Ubuntu:22.04:LTSlibsoup2.4no fix listedUBUNTU-CVE-2026-1761
Ubuntu:24.04:LTSlibsoup2.4no fix listedUBUNTU-CVE-2026-1761
Ubuntu:25.10libsoup2.4no fix listedUBUNTU-CVE-2026-1761
Ubuntu:26.10libsoup2.4no fix listedUBUNTU-CVE-2026-1761
Ubuntu:24.04:LTSlibsoup3no fix listedUBUNTU-CVE-2026-1761
Ubuntu:25.10libsoup3no fix listedUBUNTU-CVE-2026-1761

Affected products (as reported)

VendorProductVersions
Red Hat Red Hat Enterprise Linux 10 see references
Red Hat Red Hat Enterprise Linux 10 see references
Red Hat Red Hat Enterprise Linux 10.0 Extended Update Support 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 see references
Red Hat Red Hat Enterprise Linux 8.2 Advanced Update Support 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 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 8.4 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 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 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 8.6 Update Services for SAP Solutions see references
Red Hat Red Hat Enterprise Linux 8.8 Telecommunications Update Service see references
Red Hat Red Hat Enterprise Linux 8.8 Telecommunications Update Service see references
Red Hat Red Hat Enterprise Linux 8.8 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 9.0 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 9.6 Extended Update Support see references
Red Hat Red Hat OpenShift Dev Spaces (RHOSDS) 3.26 see references
Red Hat Red Hat OpenShift Dev Spaces (RHOSDS) 3.26 see references

Weakness: CWE-121 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:H/A:L

References