Vulnerability · Published Mar 24, 2026 · Assigned by f5
CVE-2026-27784NGINX ngx_http_mp4_module vulnerability
High 7.8
In plain English
A high-severity integer overflow in NGINX Open Source from F5. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 1.1% (higher than 65% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Severity (CVSS 3.1)7.8High
Exploit odds (30 days)1.1%top 35.0% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known
Official description
The 32-bit implementation of NGINX Open Source has a vulnerability in the ngx_http_mp4_module module, which might allow an attacker to over-read or over-write NGINX worker memory resulting in its termination, using a specially crafted MP4 file. The issue only affects 32-bit NGINX Open Source if it is built with the ngx_http_mp4_module module and the mp4 directive is used in the configuration file. Additionally, the attack is possible only if an attacker can trigger the processing of a specially crafted MP4 file with the ngx_http_mp4_module module. Note: Software versions which have reached End of Technical Support (EoTS) are not evaluated.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| AlmaLinux:8 | nginx | 1:1.24.0-3.module_el8.10.0+4159+021b4a2a.alma.1 | ALSA-2026:6907 |
| AlmaLinux:9 | nginx | 2:1.20.1-24.el9_7.2.alma.1 | ALSA-2026:7002 |
| AlmaLinux:9 | nginx | 1:1.24.0-5.module_el9.7.0+220+47ec8b91.2.alma.1 | ALSA-2026:6923 |
| AlmaLinux:9 | nginx | 2:1.26.3-2.module_el9.7.0+223+9cd7031b.1 | ALSA-2026:7343 |
| AlmaLinux:10 | nginx-all-modules | 2:1.26.3-2.el10_1.1 | ALSA-2026:6906 |
| AlmaLinux:8 | nginx-all-modules | 1:1.24.0-3.module_el8.10.0+4159+021b4a2a.alma.1 | ALSA-2026:6907 |
| AlmaLinux:9 | nginx-all-modules | 1:1.24.0-5.module_el9.7.0+220+47ec8b91.2.alma.1 | ALSA-2026:6923 |
| AlmaLinux:9 | nginx-all-modules | 2:1.26.3-2.module_el9.7.0+223+9cd7031b.1 | ALSA-2026:7343 |
| AlmaLinux:9 | nginx-all-modules | 2:1.20.1-24.el9_7.2.alma.1 | ALSA-2026:7002 |
| AlmaLinux:9 | nginx-core | 2:1.26.3-2.module_el9.7.0+223+9cd7031b.1 | ALSA-2026:7343 |
| AlmaLinux:9 | nginx-core | 1:1.24.0-5.module_el9.7.0+220+47ec8b91.2.alma.1 | ALSA-2026:6923 |
| AlmaLinux:9 | nginx-core | 2:1.20.1-24.el9_7.2.alma.1 | ALSA-2026:7002 |
| AlmaLinux:10 | nginx-filesystem | 2:1.26.3-2.el10_1.1 | ALSA-2026:6906 |
| AlmaLinux:8 | nginx-filesystem | 1:1.24.0-3.module_el8.10.0+4159+021b4a2a.alma.1 | ALSA-2026:6907 |
| AlmaLinux:9 | nginx-filesystem | 2:1.26.3-2.module_el9.7.0+223+9cd7031b.1 | ALSA-2026:7343 |
| AlmaLinux:9 | nginx-filesystem | 2:1.20.1-24.el9_7.2.alma.1 | ALSA-2026:7002 |
| AlmaLinux:9 | nginx-filesystem | 1:1.24.0-5.module_el9.7.0+220+47ec8b91.2.alma.1 | ALSA-2026:6923 |
| AlmaLinux:8 | nginx-mod-devel | 1:1.24.0-3.module_el8.10.0+4159+021b4a2a.alma.1 | ALSA-2026:6907 |
| AlmaLinux:9 | nginx-mod-devel | 2:1.26.3-2.module_el9.7.0+223+9cd7031b.1 | ALSA-2026:7343 |
| AlmaLinux:9 | nginx-mod-devel | 2:1.20.1-24.el9_7.2.alma.1 | ALSA-2026:7002 |
| AlmaLinux:9 | nginx-mod-devel | 1:1.24.0-5.module_el9.7.0+220+47ec8b91.2.alma.1 | ALSA-2026:6923 |
| AlmaLinux:8 | nginx-mod-http-image-filter | 1:1.24.0-3.module_el8.10.0+4159+021b4a2a.alma.1 | ALSA-2026:6907 |
| AlmaLinux:9 | nginx-mod-http-image-filter | 1:1.24.0-5.module_el9.7.0+220+47ec8b91.2.alma.1 | ALSA-2026:6923 |
| AlmaLinux:9 | nginx-mod-http-image-filter | 2:1.26.3-2.module_el9.7.0+223+9cd7031b.1 | ALSA-2026:7343 |
| AlmaLinux:9 | nginx-mod-http-image-filter | 2:1.20.1-24.el9_7.2.alma.1 | ALSA-2026:7002 |
| AlmaLinux:8 | nginx-mod-http-perl | 1:1.24.0-3.module_el8.10.0+4159+021b4a2a.alma.1 | ALSA-2026:6907 |
| AlmaLinux:9 | nginx-mod-http-perl | 2:1.26.3-2.module_el9.7.0+223+9cd7031b.1 | ALSA-2026:7343 |
| AlmaLinux:9 | nginx-mod-http-perl | 1:1.24.0-5.module_el9.7.0+220+47ec8b91.2.alma.1 | ALSA-2026:6923 |
| AlmaLinux:9 | nginx-mod-http-perl | 2:1.20.1-24.el9_7.2.alma.1 | ALSA-2026:7002 |
| AlmaLinux:8 | nginx-mod-http-xslt-filter | 1:1.24.0-3.module_el8.10.0+4159+021b4a2a.alma.1 | ALSA-2026:6907 |
| AlmaLinux:9 | nginx-mod-http-xslt-filter | 2:1.26.3-2.module_el9.7.0+223+9cd7031b.1 | ALSA-2026:7343 |
| AlmaLinux:9 | nginx-mod-http-xslt-filter | 1:1.24.0-5.module_el9.7.0+220+47ec8b91.2.alma.1 | ALSA-2026:6923 |
| AlmaLinux:9 | nginx-mod-http-xslt-filter | 2:1.20.1-24.el9_7.2.alma.1 | ALSA-2026:7002 |
| AlmaLinux:8 | nginx-mod-mail | 1:1.24.0-3.module_el8.10.0+4159+021b4a2a.alma.1 | ALSA-2026:6907 |
| AlmaLinux:9 | nginx-mod-mail | 2:1.26.3-2.module_el9.7.0+223+9cd7031b.1 | ALSA-2026:7343 |
| AlmaLinux:9 | nginx-mod-mail | 2:1.20.1-24.el9_7.2.alma.1 | ALSA-2026:7002 |
| AlmaLinux:9 | nginx-mod-mail | 1:1.24.0-5.module_el9.7.0+220+47ec8b91.2.alma.1 | ALSA-2026:6923 |
| AlmaLinux:8 | nginx-mod-stream | 1:1.24.0-3.module_el8.10.0+4159+021b4a2a.alma.1 | ALSA-2026:6907 |
| AlmaLinux:9 | nginx-mod-stream | 2:1.20.1-24.el9_7.2.alma.1 | ALSA-2026:7002 |
| AlmaLinux:9 | nginx-mod-stream | 1:1.24.0-5.module_el9.7.0+220+47ec8b91.2.alma.1 | ALSA-2026:6923 |
| AlmaLinux:9 | nginx-mod-stream | 2:1.26.3-2.module_el9.7.0+223+9cd7031b.1 | ALSA-2026:7343 |
| Alpine:v3.22 | nginx | 1.28.3-r0 | ALPINE-CVE-2026-27784 |
| Alpine:v3.23 | nginx | 1.28.3-r0 | ALPINE-CVE-2026-27784 |
| Alpine:v3.24 | nginx | 1.28.3-r0 | ALPINE-CVE-2026-27784 |
| Debian:12 | nginx | 1.22.1-9+deb12u5 | DEBIAN-CVE-2026-27784 |
| Debian:13 | nginx | 1.26.3-3+deb13u3 | DEBIAN-CVE-2026-27784 |
| Debian:14 | nginx | 1.28.3-1 | DEBIAN-CVE-2026-27784 |
| Rocky Linux:10 | nginx | 2:1.26.3-2.el10_1.1 | RLSA-2026:6906 |
| Rocky Linux:8 | nginx | 1:1.24.0-3.module+el8.10.0+40144+38158758 | RLSA-2026:6907 |
| Rocky Linux:9 | nginx | 2:1.20.1-24.el9_7.2.rocky.0.1 | RLSA-2026:7002 |
| Rocky Linux:9 | nginx | 1:1.24.0-5.module+el9.7.0+40088+99dbd8cd.1.rocky.0.1 | RLSA-2026:6923 |
| Rocky Linux:9 | nginx | 2:1.26.3-2.module+el9.7.0+40103+2443f6d1 | RLSA-2026:7343 |
| Ubuntu:22.04:LTS | nginx | 1.18.0-6ubuntu14.10 | UBUNTU-CVE-2026-27784 |
| Ubuntu:24.04:LTS | nginx | 1.24.0-2ubuntu7.7 | UBUNTU-CVE-2026-27784 |
| Ubuntu:25.10 | nginx | 1.28.0-6ubuntu1.2 | UBUNTU-CVE-2026-27784 |
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| F5 | NGINX Open Source | 1.29.0 – before 1.29.71.1.19 – before 1.28.3 |
Weakness: CWE-190 · Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
References
- https://my.f5.com/manage/s/article/K000160364 vendor-advisory
- https://access.redhat.com/security/cve/CVE-2026-27784 vdb-entry, x_refsource_REDHAT
- RHBZ#2450785 issue-tracking, x_refsource_REDHAT
- https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-27784.json x_sadp-csaf-vex
- https://access.redhat.com/errata/RHSA-2026:13634 vendor-advisory, x_refsource_REDHAT
- https://access.redhat.com/errata/RHSA-2026:6906 vendor-advisory, x_refsource_REDHAT
- https://access.redhat.com/errata/RHSA-2026:6907 vendor-advisory, x_refsource_REDHAT
- https://access.redhat.com/errata/RHSA-2026:15942 vendor-advisory, x_refsource_REDHAT
- https://access.redhat.com/errata/RHSA-2026:14836 vendor-advisory, x_refsource_REDHAT
- https://access.redhat.com/errata/RHSA-2026:13839 vendor-advisory, x_refsource_REDHAT
- https://access.redhat.com/errata/RHSA-2026:15943 vendor-advisory, x_refsource_REDHAT
- https://access.redhat.com/errata/RHSA-2026:15945 vendor-advisory, x_refsource_REDHAT
- https://access.redhat.com/errata/RHSA-2026:13680 vendor-advisory, x_refsource_REDHAT
- https://access.redhat.com/errata/RHSA-2026:15966 vendor-advisory, x_refsource_REDHAT
- https://access.redhat.com/errata/RHSA-2026:6923 vendor-advisory, x_refsource_REDHAT
- https://access.redhat.com/errata/RHSA-2026:7002 vendor-advisory, x_refsource_REDHAT
- https://access.redhat.com/errata/RHSA-2026:7343 vendor-advisory, x_refsource_REDHAT
- https://access.redhat.com/errata/RHSA-2026:8346 vendor-advisory, x_refsource_REDHAT
- https://access.redhat.com/errata/RHSA-2026:10065 vendor-advisory, x_refsource_REDHAT