Upstream information

CVE-2026-42530 at MITRE

Description

NGINX Open Source has a vulnerability in the ngx_http_v3_module module. When NGINX Open Source is configured to use the HTTP/3 QUIC module, a remote unauthenticated attacker along with conditions beyond their control can use a specially crafted HTTP/3 session to reopen a QPACK encoder stream. This may cause a Use-after-Free in the NGINX worker process leading to a restart. Additionally, attackers can execute code on systems with Address Space Layout Randomization (ASLR) disabled or when the attacker can bypass ASLR.


Note: Software versions which have reached End of Technical Support (EoTS) are not evaluated.

Other Security Trackers

SUSE information

Overall state of this security issue: Resolved

This issue is currently rated as having important severity.

CVSS v3 Scores
CVSS detail CNA (F5 Networks) SUSE
Base Score 8.1 8.1
Vector CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
Attack Vector Network Network
Attack Complexity High High
Privileges Required None None
User Interaction None None
Scope Unchanged Unchanged
Confidentiality Impact High High
Integrity Impact High High
Availability Impact High High
CVSSv3 Version 3.1 3.1
CVSS v4 Scores
CVSS detail CNA (F5 Networks)
Base Score 9.2
Vector CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/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
Attack Vector Network
Attack Complexity High
Attack Requirements None
Privileges Required None
User Interaction None
Vulnerable System Confidentiality Impact High
Vulnerable System Integrity Impact High
Vulnerable System Availability Impact High
Subsequent System Confidentiality Impact None
Subsequent System Integrity Impact None
Subsequent System Availability Impact None
CVSSv4 Version 4.0
SUSE Bugzilla entry: 1268493 [NEW]

No SUSE Security Announcements cross referenced.


Status of this issue by product and package

Please note that this evaluation state might be work in progress, incomplete or outdated. Also information for service packs in the LTSS phase is only included for issues meeting the LTSS criteria. If in doubt, feel free to contact us for clarification. The updates are grouped by state of their lifecycle. SUSE product lifecycles are documented on the lifecycle page.

Product(s) Source package State
Products under general support and receiving all security fixes.
SUSE Linux Enterprise High Performance Computing 15 SP7 nginx Not affected
SUSE Linux Enterprise Module for Server Applications 15 SP7 nginx Not affected
SUSE Linux Enterprise Server 15 SP7 nginx Not affected
SUSE Linux Enterprise Server 16.0 nginx Not affected
SUSE Linux Enterprise Server 16.1 nginx Not affected
SUSE Linux Enterprise Server for SAP Applications 15 SP7 nginx Not affected
SUSE Linux Enterprise Server for SAP applications 16.0 nginx Not affected
SUSE Linux Enterprise Server for SAP applications 16.1 nginx Not affected
openSUSE Leap 16.0 nginx Not affected
Products under Long Term Service Pack support and receiving important and critical security fixes.
SUSE Linux Enterprise High Performance Computing 15 SP4 nginx Not affected
SUSE Linux Enterprise High Performance Computing 15 SP4-LTSS nginx Not affected
SUSE Linux Enterprise High Performance Computing 15 SP5 nginx Not affected
SUSE Linux Enterprise High Performance Computing 15 SP5-LTSS nginx Not affected
SUSE Linux Enterprise Module for Server Applications 15 SP4 nginx Not affected
SUSE Linux Enterprise Module for Server Applications 15 SP5 nginx Not affected
SUSE Linux Enterprise Module for Server Applications 15 SP6 nginx Not affected
SUSE Linux Enterprise Server 15 SP4 nginx Not affected
SUSE Linux Enterprise Server 15 SP4-LTSS nginx Not affected
SUSE Linux Enterprise Server 15 SP5 nginx Not affected
SUSE Linux Enterprise Server 15 SP5-LTSS nginx Not affected
SUSE Linux Enterprise Server 15 SP6 nginx Not affected
SUSE Linux Enterprise Server 15 SP6-LTSS nginx Not affected
SUSE Linux Enterprise Server for SAP Applications 15 SP6 nginx Not affected
SUSE Manager Proxy 4.3 nginx Not affected
SUSE Manager Proxy LTS 4.3 nginx Not affected
SUSE Manager Retail Branch Server 4.3 nginx Not affected
SUSE Manager Retail Branch Server LTS 4.3 nginx Not affected
SUSE Manager Server 4.3 nginx Not affected
SUSE Manager Server LTS 4.3 nginx Not affected
Products past their end of life and not receiving proactive updates anymore.
SUSE CaaS Platform 4.0 nginx Not affected
SUSE Enterprise Storage 6 nginx Not affected
SUSE Enterprise Storage 7 nginx Not affected
SUSE Enterprise Storage 7.1 nginx Not affected
SUSE Linux Enterprise High Performance Computing 15 SP1 nginx Not affected
SUSE Linux Enterprise High Performance Computing 15 SP1-ESPOS nginx Not affected
SUSE Linux Enterprise High Performance Computing 15 SP1-LTSS nginx Not affected
SUSE Linux Enterprise High Performance Computing 15 SP2 nginx Not affected
SUSE Linux Enterprise High Performance Computing 15 SP2-ESPOS nginx Not affected
SUSE Linux Enterprise High Performance Computing 15 SP2-LTSS nginx Not affected
SUSE Linux Enterprise High Performance Computing 15 SP3 nginx Not affected
SUSE Linux Enterprise High Performance Computing 15 SP3-ESPOS nginx Not affected
SUSE Linux Enterprise High Performance Computing 15 SP3-LTSS nginx Not affected
SUSE Linux Enterprise High Performance Computing 15 SP4-ESPOS nginx Not affected
SUSE Linux Enterprise High Performance Computing 15 SP5-ESPOS nginx Not affected
SUSE Linux Enterprise High Performance Computing 15 SP6 nginx Not affected
SUSE Linux Enterprise Module for Server Applications 15 SP1 nginx Not affected
SUSE Linux Enterprise Module for Server Applications 15 SP2 nginx Not affected
SUSE Linux Enterprise Module for Server Applications 15 SP3 nginx Not affected
SUSE Linux Enterprise Real Time 15 SP2 nginx Not affected
SUSE Linux Enterprise Real Time 15 SP3 nginx Not affected
SUSE Linux Enterprise Real Time 15 SP4 nginx Not affected
SUSE Linux Enterprise Server 15 SP1 nginx Not affected
SUSE Linux Enterprise Server 15 SP1-BCL nginx Not affected
SUSE Linux Enterprise Server 15 SP1-LTSS nginx Not affected
SUSE Linux Enterprise Server 15 SP2 nginx Not affected
SUSE Linux Enterprise Server 15 SP2-BCL nginx Not affected
SUSE Linux Enterprise Server 15 SP2-LTSS nginx Not affected
SUSE Linux Enterprise Server 15 SP3 nginx Not affected
SUSE Linux Enterprise Server 15 SP3-BCL nginx Not affected
SUSE Linux Enterprise Server 15 SP3-LTSS nginx Not affected
SUSE Linux Enterprise Server for SAP Applications 15 SP1 nginx Not affected
SUSE Linux Enterprise Server for SAP Applications 15 SP2 nginx Not affected
SUSE Linux Enterprise Server for SAP Applications 15 SP3 nginx Not affected
SUSE Linux Enterprise Server for SAP Applications 15 SP4 nginx Not affected
SUSE Linux Enterprise Server for SAP Applications 15 SP5 nginx Not affected
SUSE Manager Proxy 4.0 nginx Not affected
SUSE Manager Proxy 4.1 nginx Not affected
SUSE Manager Proxy 4.2 nginx Not affected
SUSE Manager Retail Branch Server 4.0 nginx Not affected
SUSE Manager Retail Branch Server 4.1 nginx Not affected
SUSE Manager Retail Branch Server 4.2 nginx Not affected
SUSE Manager Server 4.0 nginx Not affected
SUSE Manager Server 4.1 nginx Not affected
SUSE Manager Server 4.2 nginx Not affected
openSUSE Leap 15.3 nginx Not affected
openSUSE Leap 15.4 nginx Not affected
openSUSE Leap 15.5 nginx Not affected
openSUSE Leap 15.6 nginx Not affected
Container Status
private-registry/1.2/harbor-portal
private-registry/harbor-nginx
private-registry/harbor-portal
suse/nginx
suse/rmt-nginx
nginxNot affected


SUSE Timeline for this CVE

CVE page created: Wed Jun 17 20:07:01 2026
CVE page last modified: Thu Jun 18 15:28:14 2026