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SUSE libsoup Vital Update to Address Buffer Overflow and Header Issues

suse
Calendar Grey February 19, 2026
Dist Suse Esm H88
SUSE update addresses security risks in libsoup with an important patch related to header handling and buffer issues.
An update that solves two vulnerabilities can now be installed.

Summary

## This update for libsoup fixes the following issues: * CVE-2026-1536: Always validate the headers value when coming from untrusted source to avoid HTTP header injection (bsc#1257440). * CVE-2026-1761: Check length of bytes read in soup_filter_input_stream_read_until to avoid a stack-based buffer overflow (bsc#1257598). ## Patch Instructions: To install this SUSE update use the SUSE recommended installation methods like YaST online_update or "zypper patch". Alternatively you can run the command listed for your product: * SUSE Linux Enterprise High Performance Computing LTSS 15 SP4 zypper in -t patch SUSE-SLE-Product-HPC-15-SP4-LTSS-2026-579=1 * SUSE Linux Enterprise High Performance Computing ESPOS 15 SP5 zypper in -t patch SUSE-SLE-Product-HPC-15-SP5-ESPOS-2026-579=1

Topics%20covered

Topics Covered

security advisory buffer overflow SuSE important libsoup header injection

References

* bsc#1257440

* bsc#1257598

Cross-

* CVE-2026-1536

* CVE-2026-1761

CVSS scores:

* CVE-2026-1536 ( SUSE ): 7.7

CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:N/SC:N/SI:H/SA:N

* CVE-2026-1536 ( SUSE ): 8.6 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:H/A:N

* CVE-2026-1536 ( NVD ): 5.8 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:L/A:N

* CVE-2026-1761 ( SUSE ): 9.2

CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

* CVE-2026-1761 ( SUSE ): 8.1 CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

* CVE-2026-1761 ( NVD ): 8.6 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:H/A:L

Affected Products:

* openSUSE Leap 15.4

* SUSE Linux Enterprise High Performance Computing 15 SP4

* SUSE Linux Enterprise High Performance Computing 15 SP5

* SUSE Linux Enterprise High Performance Computing ESPOS 15 SP4

Severity
important
Lowest
Low
Medium
High
Critical

Announcement ID: SUSE-SU-2026:0579-1
Release Date: 2026-02-19T11:38:02Z
Rating: important

Topics%20covered

Topics Covered

security advisory buffer overflow SuSE important libsoup header injection

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