Audit Linux privileges now to limit compromise, escalation, and system-wide damage. Review Linux Privileges×

Alerts This Week
Warning Icon 1 439
Alerts This Week
Warning Icon 1 439

SUSE Issues Advisory for nghttp2 HTTP Request Smuggling CVE-2026-58055

suse
Calendar Grey July 21, 2026
Scroller Suse
The SUSE update addresses a moderate issue in nghttp2 that can lead to HTTP request smuggling and response queue poisoning.
A security update for nghttp2 addresses CVE-2026-58055, which can cause HTTP request smuggling and response-queue poisoning across multiple SUSE products, releasing patches for aff...

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: * openSUSE Leap 15.6 zypper in -t patch SUSE-2026-3153=1 * Basesystem Module 15-SP7 zypper in -t patch SUSE-SLE-Module-Basesystem-15-SP7-2026-3153=1 ## Package List: * openSUSE Leap 15.6 (x86_64) * libnghttp2-14-32bit-1.40.0-150600.25.8.1 * libnghttp2_asio1-32bit-1.40.0-150600.25.8.1 * libnghttp2_asio1-32bit-debuginfo-1.40.0-150600.25.8.1 * libnghttp2-14-32bit-debuginfo-1.40.0-150600.25.8.1

Topics%20covered

Topics Covered

security advisory moderate SuSE http smuggling nghttp2 cross-client poisoning

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:

* Basesystem Module 15-SP7

* openSUSE Leap 15.6

* SUSE Linux Enterprise Desktop 15 SP7

* SUSE Linux Enterprise Real Time 15 SP7

Severity
moderate
Lowest
Low
Medium
High
Critical

Announcement ID: SUSE-SU-2026:3153-1
Release Date: 2026-07-21T12:54:31Z
Rating: moderate

Topics%20covered

Topics Covered

security advisory moderate SuSE http smuggling nghttp2 cross-client poisoning

Get the latest News and Insights

Get the latest Linux and open source security news straight to your inbox.