Description
A vulnerability exists in NGINX OSS and NGINX Plus when configured to proxy to upstream Transport Layer Security (TLS) servers. An attacker with a man-in-the-middle (MITM) position on the upstream server side—along with conditions beyond the attacker's control—may be able to inject plain text data into the response from an upstream proxied server. Note: Software versions which have reached End of Technical Support (EoTS) are not evaluated.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| F5 | NGINX Open Source | 1.3.0 – < 1.29.5 | 1.29.5 |
| F5 | NGINX Plus | R36 – < R36 P2, R35 – < R35 P1, R34, R33, R32 – < R32 P4 | R36 P2 |
Fixed in Linux distributions
Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.
Debian
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian 14 | nginx | 1.28.1-3 | — |
| Debian 13 | nginx | 1.26.3-3+deb13u2 | DSA-6131-1 |
| Debian 12 | nginx | 1.22.1-9+deb12u4 | DSA-6131-1 |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 26.04 LTS | nginx | 1.28.1-3ubuntu1 | — |
| Ubuntu 25.10 | nginx | 1.28.0-6ubuntu1.1 | USN-8038-1 |
| Ubuntu 24.04 LTS | nginx | 1.24.0-2ubuntu7.6 | USN-8038-1 |
| Ubuntu 22.04 LTS | nginx | 1.18.0-6ubuntu14.8 | USN-8038-1 |
Show 4 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu Pro 20.04 LTS | nginx | 1.18.0-0ubuntu1.7+esm1 | — |
| Ubuntu Pro 18.04 LTS | nginx | 1.14.0-0ubuntu1.11+esm2 | — |
| Ubuntu Pro 16.04 LTS | nginx | 1.10.3-0ubuntu0.16.04.5+esm7 | — |
| Ubuntu Pro 14.04 LTS | nginx | 1.4.6-1ubuntu3.9+esm6 | — |
Red Hat
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| RHEL 10 | nginx +9 | 2:1.26.3-2.el10_1 | RHSA-2026:4705 |
| RHEL 9 | nginx +9 | 1:1.24.0-5.module+el9.7.0+24009+e763bdd7.1 | RHSA-2026:5599, RHSA-2026:4235, RHSA-2026:3638 |
| RHEL 8 | nginx +8 | 1:1.24.0-2.module+el8.10.0+24013+f603d2af | RHSA-2026:5581 |
Show 6 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| RHEL 10.0 EUS | nginx +9 | 2:1.26.3-1.el10_0.3 | RHSA-2026:6311 |
| RHEL 9.6 EUS | nginx +9 | 1:1.24.0-4.module+el9.6.0+24139+44cdd49a.1 | RHSA-2026:6427, RHSA-2026:6302, RHSA-2026:6182 |
| RHEL 9.4 EUS | nginx +9 | 1:1.20.1-16.el9_4.4 | RHSA-2026:6407, RHSA-2026:6234 |
| RHEL 9.2 E4S | nginx +8 | 1:1.20.1-14.el9_2.4 | RHSA-2026:6235 |
| RHEL 9.0 E4S | nginx +7 | 1:1.20.1-10.el9_0.2 | RHSA-2026:6408 |
| Red Hat Hardened Images 1 | nginx +11 | 1.30.0-1.hum1 | RHSA-2026:8346 |
AlmaLinux
Errata ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| AlmaLinux 10 | nginx-filesystem +1 | 2:1.26.3-2.el10_1 | ALSA-2026:4705 |
| AlmaLinux 9 | nginx +9 | 1:1.24.0-5.module_el9.7.0+212+9d3c155a.1.alma.1 | ALSA-2026:5599, ALSA-2026:4235, ALSA-2026:3638 |
| AlmaLinux 8 | nginx +8 | 1:1.24.0-2.module_el8.10.0+4143+ec3e7d32.alma.1 | ALSA-2026:5581 |
Rocky Linux
Errata ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Rocky Linux 10 | nginx | 2:1.26.3-2.el10_1 | RLSA-2026:4705 |
| Rocky Linux 9 | nginx | 1:1.24.0-5.module+el9.7.0+40088+99dbd8cd.1.rocky.0.1 | RLSA-2026:4235, RLSA-2026:3638 |
| Rocky Linux 8 | nginx | 1:1.24.0-2.module+el8.10.0+40137+188e04f4 | RLSA-2026:5581 |
openSUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Tumbleweed | nginx | 1.29.5-1.1 | openSUSE-SU-2026:10158-1 |
Alpine
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Alpine v3.24 | nginx | 1.28.2-r0 | — |
| Alpine v3.23 | nginx | 1.28.2-r0 | — |
| Alpine v3.22 | nginx | 1.28.2-r0 | — |
Amazon Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Amazon Linux 2023 | nginx +9 | 1:1.28.2-1.amzn2023.0.1 | ALAS2023-2026-1436 |
Azure Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Azure Linux 3 | nginx | 1.28.2-1 | — |
| Azure Linux 2 (CBL-Mariner) | nginx | 1.22.1-15 | — |
Oracle Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Oracle Linux 10 | nginx +9 | 2:1.26.3-2.0.1.el10_1 | ELSA-2026-4705 |
| Oracle Linux 9 | nginx +9 | 1:1.24.0-5.0.1.module+el9.7.0+90821+c4114bda.1 | ELSA-2026-5599, ELSA-2026-4235, ELSA-2026-3638 |
| Oracle Linux 8 | nginx +8 | 1:1.24.0-2.0.1.module+el8.10.0+90849+dcad285b | ELSA-2026-5581 |
Wolfi
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Wolfi rolling | ingress-nginx-controller-1.15 | 1.15.12-r0 | — |
| Wolfi rolling | nginx-mainline | 1.29.5-r0 | — |
| Wolfi rolling | nginx-stable +16 | 1.28.2-r0 | — |
Advisories 35
- WID-SEC-2026-2933 Splunk SOAR: Mehrere Schwachstellen BSI CERT-Bund (WID) · Nov 2, 2026
- ALSA-2026:5599 Moderate: nginx security update AlmaLinux Security Advisories · Oct 29, 2026
- ALSA-2026:3638 Moderate: nginx:1.24 security update AlmaLinux Security Advisories · Oct 29, 2026
- ALSA-2026:4235 Moderate: nginx:1.26 security update AlmaLinux Security Advisories · Oct 29, 2026
- ALSA-2026:4705 Moderate: nginx security update AlmaLinux Security Advisories · Oct 29, 2026
- ALSA-2026:5581 Moderate: nginx:1.24 security update AlmaLinux Security Advisories · Oct 29, 2026
- RHSA-2026:8346 Red Hat Security Advisory: Red Hat Hardened Images RPMs bug fix and enhancement update Red Hat Security Advisories (RHSA) · Oct 10, 2026
- WID-SEC-2026-0309 NGINX OSS und NGINX Plus: Schwachstelle ermöglicht Manipulation von Dateien BSI CERT-Bund (WID) · Sep 16, 2026
- RHSA-2026:6427 Red Hat Security Advisory: nginx:1.26 security update Red Hat Security Advisories (RHSA) · Jul 9, 2026
- RHSA-2026:6407 Red Hat Security Advisory: nginx:1.24 security update Red Hat Security Advisories (RHSA) · Jul 9, 2026
- RHSA-2026:6408 Red Hat Security Advisory: nginx security update Red Hat Security Advisories (RHSA) · Jul 9, 2026
- RHSA-2026:6311 Red Hat Security Advisory: nginx security update Red Hat Security Advisories (RHSA) · Jul 9, 2026
- RHSA-2026:6302 Red Hat Security Advisory: nginx:1.24 security update Red Hat Security Advisories (RHSA) · Jul 9, 2026
- RHSA-2026:6235 Red Hat Security Advisory: nginx security update Red Hat Security Advisories (RHSA) · Jul 9, 2026
- RHSA-2026:6234 Red Hat Security Advisory: nginx security update Red Hat Security Advisories (RHSA) · Jul 9, 2026
- RHSA-2026:6182 Red Hat Security Advisory: nginx security update Red Hat Security Advisories (RHSA) · Jul 9, 2026
- RHSA-2026:5599 Red Hat Security Advisory: nginx security update Red Hat Security Advisories (RHSA) · Jul 9, 2026
- RHSA-2026:5581 Red Hat Security Advisory: nginx:1.24 security update Red Hat Security Advisories (RHSA) · Jul 9, 2026
- RHSA-2026:4705 Red Hat Security Advisory: nginx security update Red Hat Security Advisories (RHSA) · Jul 9, 2026
- RHSA-2026:4235 Red Hat Security Advisory: nginx:1.26 security update Red Hat Security Advisories (RHSA) · Jul 9, 2026
- RHSA-2026:3638 Red Hat Security Advisory: nginx:1.24 security update Red Hat Security Advisories (RHSA) · Jul 9, 2026
- USN-8038-1 nginx vulnerability Ubuntu Security Notices (USN) · Apr 27, 2026
- WID-SEC-2026-1194 Oracle Communications: Mehrere Schwachstellen BSI CERT-Bund (WID) · Apr 21, 2026
- RLSA-2026:5581 Moderate: nginx:1.24 security update Rocky Linux Security Advisories · Apr 7, 2026
- RLSA-2026:4705 Moderate: nginx security update Rocky Linux Security Advisories · Mar 27, 2026
- ELSA-2026-5599 Moderate: nginx security update (Oracle Linux 9) Oracle Linux Security Advisories (ELSA) · Mar 25, 2026
- ELSA-2026-5581 Moderate: nginx:1.24 security update (Oracle Linux 8) Oracle Linux Security Advisories (ELSA) · Mar 24, 2026
- RLSA-2026:4235 Moderate: nginx:1.26 security update Rocky Linux Security Advisories · Mar 23, 2026
- ELSA-2026-4705 Moderate: nginx security update (Oracle Linux 10) Oracle Linux Security Advisories (ELSA) · Mar 17, 2026
- ELSA-2026-4235 Moderate: nginx:1.26 security update (Oracle Linux 9) Oracle Linux Security Advisories (ELSA) · Mar 11, 2026
- RLSA-2026:3638 Moderate: nginx:1.24 security update Rocky Linux Security Advisories · Mar 9, 2026
- ELSA-2026-3638 Moderate: nginx:1.24 security update (Oracle Linux 9) Oracle Linux Security Advisories (ELSA) · Mar 4, 2026
- ALAS2023-2026-1436 Moderate: nginx security update (Amazon Linux 2023) Amazon Linux Security Center (ALAS) · Feb 18, 2026
- DSA-6131-1 nginx - security update Debian Security (DSA / DLA) · Feb 12, 2026
- openSUSE-SU-2026:10158-1 nginx-1.29.5-1.1 on GA media SUSE / openSUSE Security Updates · Feb 7, 2026
References
- https://my.f5.com/manage/s/article/K000159824 vendor-advisory