CVE-2026-27651

highpriority · track · 0EPSS 0.010 · 61 %ileDEEURUUS
grimoire priorityP2 · Scheduled
Exploitable?
—
no known exploitation
Likely / severe?
0.95% (61st) EPSS
CVSS 7.5 · high
Is it mine?
50 products
Check your exposure
Who says so?
6 sources
cnnvd · enisa_euvd · fstec_bdu · osv

EPSS · scored 2026-10-27

When the ngx_mail_auth_http_module module is enabled on NGINX Plus or NGINX Open Source, undisclosed requests can cause worker processes to terminate. This issue may occur when (1) CRAM-MD5 or APOP authentication is enabled, and (2) the authentication server permits retry by returning the Auth-Wait response header. Note: Software versions which have reached End of Technical Support (EoTS) are not evaluated.

01

remediations

Vendor fix, mitigation, or workaround guidance, as published by each source.

A vendor fix is available.

  • Fixednginx-2:1.26.3-2.el10_1.1.x86_64 as component of SUSE Liberty Linux 10suse_csaf

    To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or "zypper patch".

  • Fixednginx-all-modules-2:1.26.3-2.el10_1.1.noarch as component of SUSE Liberty Linux 10suse_csaf

    To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or "zypper patch".

  • Fixednginx-core-2:1.26.3-2.el10_1.1.x86_64 as component of SUSE Liberty Linux 10suse_csaf

    To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or "zypper patch".

  • Fixednginx-filesystem-2:1.26.3-2.el10_1.1.noarch as component of SUSE Liberty Linux 10suse_csaf

    To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or "zypper patch".

  • Fixednginx-mod-devel-2:1.26.3-2.el10_1.1.x86_64 as component of SUSE Liberty Linux 10suse_csaf

    To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or "zypper patch".

  • Fixednginx-mod-http-image-filter-2:1.26.3-2.el10_1.1.x86_64 as component of SUSE Liberty Linux 10suse_csaf

    To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or "zypper patch".

  • Fixednginx-mod-http-perl-2:1.26.3-2.el10_1.1.x86_64 as component of SUSE Liberty Linux 10suse_csaf

    To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or "zypper patch".

  • Fixednginx-mod-http-xslt-filter-2:1.26.3-2.el10_1.1.x86_64 as component of SUSE Liberty Linux 10suse_csaf

    To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or "zypper patch".

  • Fixednginx-mod-mail-2:1.26.3-2.el10_1.1.x86_64 as component of SUSE Liberty Linux 10suse_csaf

    To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or "zypper patch".

  • Fixednginx-mod-stream-2:1.26.3-2.el10_1.1.x86_64 as component of SUSE Liberty Linux 10suse_csaf

    To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or "zypper patch".

  • Fixednginx-1:1.24.0-3.module+el8.10.0+24155+8a5ade52.x86_64::nginx:1.24 as component of SUSE Liberty Linux 8suse_csaf

    To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or "zypper patch".

  • Fixednginx-all-modules-1:1.24.0-3.module+el8.10.0+24155+8a5ade52.noarch::nginx:1.24 as component of SUSE Liberty Linux 8suse_csaf

    To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or "zypper patch".

  • Fixednginx-filesystem-1:1.24.0-3.module+el8.10.0+24155+8a5ade52.noarch::nginx:1.24 as component of SUSE Liberty Linux 8suse_csaf

    To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or "zypper patch".

  • Fixednginx-mod-devel-1:1.24.0-3.module+el8.10.0+24155+8a5ade52.x86_64::nginx:1.24 as component of SUSE Liberty Linux 8suse_csaf

    To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or "zypper patch".

  • Fixednginx-mod-http-image-filter-1:1.24.0-3.module+el8.10.0+24155+8a5ade52.x86_64::nginx:1.24 as component of SUSE Liberty Linux 8suse_csaf

    To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or "zypper patch".

  • Fixednginx-mod-http-perl-1:1.24.0-3.module+el8.10.0+24155+8a5ade52.x86_64::nginx:1.24 as component of SUSE Liberty Linux 8suse_csaf

    To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or "zypper patch".

  • Fixednginx-mod-http-xslt-filter-1:1.24.0-3.module+el8.10.0+24155+8a5ade52.x86_64::nginx:1.24 as component of SUSE Liberty Linux 8suse_csaf

    To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or "zypper patch".

  • Fixednginx-mod-mail-1:1.24.0-3.module+el8.10.0+24155+8a5ade52.x86_64::nginx:1.24 as component of SUSE Liberty Linux 8suse_csaf

    To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or "zypper patch".

  • Fixednginx-mod-stream-1:1.24.0-3.module+el8.10.0+24155+8a5ade52.x86_64::nginx:1.24 as component of SUSE Liberty Linux 8suse_csaf

    To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or "zypper patch".

  • Fixednginx-1:1.24.0-5.module+el9.7.0+24151+c43a3acf.2.x86_64::nginx:1.24 as component of SUSE Liberty Linux 9suse_csaf

    To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or "zypper patch".

  • Fixednginx-all-modules-1:1.24.0-5.module+el9.7.0+24151+c43a3acf.2.noarch::nginx:1.24 as component of SUSE Liberty Linux 9suse_csaf

    To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or "zypper patch".

  • Fixednginx-core-1:1.24.0-5.module+el9.7.0+24151+c43a3acf.2.x86_64::nginx:1.24 as component of SUSE Liberty Linux 9suse_csaf

    To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or "zypper patch".

  • Fixednginx-filesystem-1:1.24.0-5.module+el9.7.0+24151+c43a3acf.2.noarch::nginx:1.24 as component of SUSE Liberty Linux 9suse_csaf

    To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or "zypper patch".

  • Fixednginx-mod-devel-1:1.24.0-5.module+el9.7.0+24151+c43a3acf.2.x86_64::nginx:1.24 as component of SUSE Liberty Linux 9suse_csaf

    To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or "zypper patch".

  • Fixednginx-mod-http-image-filter-1:1.24.0-5.module+el9.7.0+24151+c43a3acf.2.x86_64::nginx:1.24 as component of SUSE Liberty Linux 9suse_csaf

    To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or "zypper patch".

  • Fixednginx-mod-http-perl-1:1.24.0-5.module+el9.7.0+24151+c43a3acf.2.x86_64::nginx:1.24 as component of SUSE Liberty Linux 9suse_csaf

    To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or "zypper patch".

  • Fixednginx-mod-http-xslt-filter-1:1.24.0-5.module+el9.7.0+24151+c43a3acf.2.x86_64::nginx:1.24 as component of SUSE Liberty Linux 9suse_csaf

    To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or "zypper patch".

  • Fixednginx-mod-mail-1:1.24.0-5.module+el9.7.0+24151+c43a3acf.2.x86_64::nginx:1.24 as component of SUSE Liberty Linux 9suse_csaf

    To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or "zypper patch".

  • Fixednginx-mod-stream-1:1.24.0-5.module+el9.7.0+24151+c43a3acf.2.x86_64::nginx:1.24 as component of SUSE Liberty Linux 9suse_csaf

    To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or "zypper patch".

  • Fixednginx-2:1.20.1-24.el9_7.2.x86_64 as component of SUSE Liberty Linux 9suse_csaf

    To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or "zypper patch".

  • Fixednginx-all-modules-2:1.20.1-24.el9_7.2.noarch as component of SUSE Liberty Linux 9suse_csaf

    To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or "zypper patch".

  • Fixednginx-core-2:1.20.1-24.el9_7.2.x86_64 as component of SUSE Liberty Linux 9suse_csaf

    To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or "zypper patch".

  • Fixednginx-filesystem-2:1.20.1-24.el9_7.2.noarch as component of SUSE Liberty Linux 9suse_csaf

    To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or "zypper patch".

  • Fixednginx-mod-devel-2:1.20.1-24.el9_7.2.x86_64 as component of SUSE Liberty Linux 9suse_csaf

    To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or "zypper patch".

  • Fixednginx-mod-http-image-filter-2:1.20.1-24.el9_7.2.x86_64 as component of SUSE Liberty Linux 9suse_csaf

    To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or "zypper patch".

  • Fixednginx-mod-http-perl-2:1.20.1-24.el9_7.2.x86_64 as component of SUSE Liberty Linux 9suse_csaf

    To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or "zypper patch".

  • Fixednginx-mod-http-xslt-filter-2:1.20.1-24.el9_7.2.x86_64 as component of SUSE Liberty Linux 9suse_csaf

    To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or "zypper patch".

  • Fixednginx-mod-mail-2:1.20.1-24.el9_7.2.x86_64 as component of SUSE Liberty Linux 9suse_csaf

    To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or "zypper patch".

  • Fixednginx-mod-stream-2:1.20.1-24.el9_7.2.x86_64 as component of SUSE Liberty Linux 9suse_csaf

    To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or "zypper patch".

  • Fixednginx-0:1.29.7-1.1.aarch64 as component of openSUSE Tumbleweedsuse_csaf

    To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or "zypper patch".

  • Fixednginx-0:1.29.7-1.1.ppc64le as component of openSUSE Tumbleweedsuse_csaf

    To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or "zypper patch".

  • Fixednginx-0:1.29.7-1.1.s390x as component of openSUSE Tumbleweedsuse_csaf

    To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or "zypper patch".

  • Fixednginx-0:1.29.7-1.1.x86_64 as component of openSUSE Tumbleweedsuse_csaf

    To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or "zypper patch".

  • Fixednginx-source-0:1.29.7-1.1.aarch64 as component of openSUSE Tumbleweedsuse_csaf

    To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or "zypper patch".

  • Fixednginx-source-0:1.29.7-1.1.ppc64le as component of openSUSE Tumbleweedsuse_csaf

    To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or "zypper patch".

  • Fixednginx-source-0:1.29.7-1.1.s390x as component of openSUSE Tumbleweedsuse_csaf

    To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or "zypper patch".

  • Fixednginx-source-0:1.29.7-1.1.x86_64 as component of openSUSE Tumbleweedsuse_csaf

    To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or "zypper patch".

02

cvss

Technical severity, 0–10. One row per scoring source.

8.7
010

base score 0–10 · higher = more severe · hover a vector to decode⚠ sources disagree · medium–high · 6.6–8.7

v3.17.5highCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:Hsecondary · f5sirt@f5.comexploitability 3.9 · impact 3.6
v3.17.5highAV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:Hsecondary · FSTEC (BDU) RU
v3.17.5highCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:Hsecondaryexploitability 3.9 · impact 3.6
v3.17.5highCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:Hsecondary · SUSE Product Security
v4.08.7highCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:Nsecondary · ENISA EU
v4.08.7highCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/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:Xsecondary · f5sirt@f5.com
v4.06.6mediumCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/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:Xsecondary · CVSS-BT (t0sche)
03

ssvc

A stakeholder decision — act, attend, or track — from exploitation and impact.

Exploitation: none · Automatable: yes · Technical Impact: partialcoordinatorcisa_ssvcUS
04

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-476USCWE-476US
05

affected products (50)

Products and version ranges known to be affected.

showing 20 of 50
06

advisories (9)

Vendor and ecosystem advisories describing this.

  • RHSA-2026:6906security update for nginx2026-04-07csaf · suse_csafDE

    security update for nginx

  • RHSA-2026:6907security update for nginx2026-04-07csaf · suse_csafDE

    security update for nginx

  • RHSA-2026:6923security update for nginx2026-04-07csaf · suse_csafDE

    security update for nginx

  • RHSA-2026:7002security update for nginx2026-04-08csaf · suse_csafDE

    security update for nginx

  • WID-SEC-W-2026-0860NGINX und NGINX Plus: Mehrere SchwachstellenDeutsch2026-03-24csaf · cert_bundDE

    Ein Angreifer kann mehrere Schwachstellen in NGINX Plus und NGINX ausnutzen, um einen Denial of Service Angriff durchzuführen, um Daten zu manipulieren, um Sicherheitsvorkehrungen zu umgehen, und potenziell um beliebigen Programmcode auszuführen.

  • WID-SEC-W-2026-2933Splunk SOAR: Mehrere SchwachstellenDeutsch2026-08-19csaf · cert_bundDE

    Ein Angreifer kann mehrere Schwachstellen in Splunk SOAR ausnutzen, um Sicherheitsvorkehrungen zu umgehen, um Informationen offenzulegen, um Dateien zu manipulieren, um einen SQL-Injection Angriff durchzuführen, um einen Cross-Site Scripting Angriff durchzuführen, und um beliebigen Programmcode auszuführen.

  • openSUSE-SU-2026:10423-1nginx-1.29.7-1.1 on GA media2026-03-25csaf · suse_csafDE

    nginx-1.29.7-1.1 on GA media

  • BIT-nginx-2026-27651NGINX ngx_mail_auth_http_module vulnerability2026-03-27vendor · osvUS

    When the ngx_mail_auth_http_module module is enabled on NGINX Plus or NGINX Open Source, undisclosed requests can cause worker processes to terminate. This issue may occur when (1) CRAM-MD5 or APOP authentication is enabled, and (2) the authentication server permits retry by returning the Auth-Wait response header. Note: Software versions which have reached End of Technical Support (EoTS) are not evaluated.

  • BIT-nginx-gateway-2026-27651NGINX ngx_mail_auth_http_module vulnerability2026-03-27vendor · osvUS

    When the ngx_mail_auth_http_module module is enabled on NGINX Plus or NGINX Open Source, undisclosed requests can cause worker processes to terminate. This issue may occur when (1) CRAM-MD5 or APOP authentication is enabled, and (2) the authentication server permits retry by returning the Auth-Wait response header. Note: Software versions which have reached End of Technical Support (EoTS) are not evaluated.

07

also known as (6)

Other names and identifiers for this entity.

08

sources

Which sources assert this record, and when.

cnnvdenisa_euvdfstec_bduosvcert_bundsuse_csafNVDCVE.orgMITRE
published 2026-03-24modified 2026-07-15
09

references (23)

External citations — patches, advisories, analysis.

scry

Attackers weaponise vulnerabilities like this against internet-exposed services. See what is exposed on your perimeter with a free passive scan.

Free scan