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SUSE libsoup Important HTTP Header Injection Buffer Overflow 2026-0431-1

suse
Calendar Grey February 11, 2026
Dist Suse Esm H88
Critical update for libsoup fixes important security flaws to enhance system integrity and performance. Act promptly!
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: * openSUSE Leap 15.6 zypper in -t patch SUSE-2026-431=1 openSUSE-SLE-15.6-2026-431=1 * Basesystem Module 15-SP7 zypper in -t patch SUSE-SLE-Module-Basesystem-15-SP7-2026-431=1 * SUSE Linux Enterprise Server 15 SP6 LTSS

Topics%20covered

Topics Covered

security advisory buffer overflow SuSE important libsoup HTTP 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:

* Basesystem Module 15-SP7

* openSUSE Leap 15.6

* SUSE Linux Enterprise Desktop 15 SP7

* SUSE Linux Enterprise Real Time 15 SP7

* SUSE Linux Enterprise Server 15 SP6

Severity
important
Lowest
Low
Medium
High
Critical

Announcement ID: SUSE-SU-2026:0431-1
Release Date: 2026-02-11T09:10:28Z
Rating: important

Topics%20covered

Topics Covered

security advisory buffer overflow SuSE important libsoup HTTP header injection

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