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SUSE nghttp2 Moderate HTTP Request Smuggling Fix 2026-3154-1

suse
Calendar Grey July 21, 2026
Scroller Suse
Fixes a security issue in nghttp2 for SUSE, resolving a potential request smuggling flaw. Update recommended.
SUSE has released a security update for nghttp2 addressing CVE-2026-58055, which can lead to HTTP request smuggling and client response-queue poisoning

Summary

## This update for nghttp2 fixes the following issue * CVE-2026-58055: HTTP/1.1 Upgrade request can lead to HTTP request smuggling and cross-client response-queue poisoning (bsc#1269489). ## 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 Server 12 SP5 LTSS Extended Security zypper in -t patch SUSE-SLE-SERVER-12-SP5-LTSS-EXTENDED-SECURITY-2026-3154=1 ## Package List: * SUSE Linux Enterprise Server 12 SP5 LTSS Extended Security (x86_64) * libnghttp2-devel-1.39.2-3.26.1 * nghttp2-debuginfo-1.39.2-3.26.1 * nghttp2-debugsource-1.39.2-3.26.1 * libnghttp2-14-debuginfo-32bit-1.39.2-3.26.1

Topics%20covered

Topics Covered

security advisory moderate SuSE HTTP request request smuggling nghttp2

References

* bsc#1269489

Cross-

* CVE-2026-58055

CVSS scores:

* CVE-2026-58055 ( SUSE ): 6.3

CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:L/VI:L/VA:N/SC:N/SI:L/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

* CVE-2026-58055 ( SUSE ): 5.4 CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:L/I:L/A:N

* CVE-2026-58055 ( NVD ): 6.3

CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:L/VI:L/VA:N/SC:N/SI:L/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

* CVE-2026-58055 ( NVD ): 5.4 CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:L/I:L/A:N

Affected Products:

* SUSE Linux Enterprise Server 12 SP5

* SUSE Linux Enterprise Server 12 SP5 LTSS Extended Security

Severity
moderate
Lowest
Low
Medium
High
Critical

Announcement ID: SUSE-SU-2026:3154-1
Release Date: 2026-07-21T12:55:40Z
Rating: moderate

Topics%20covered

Topics Covered

security advisory moderate SuSE HTTP request request smuggling nghttp2

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