CVE-2026-42945 · cross-distro fix matrix

CVE-2026-42945: It was discovered that the nginx ngx_http_rewrite_module component

Affects 3 Linux releases across 50 (distro × package) combinations. First disclosed: 2026-05-14.

Fix per ecosystem

Each block below is a distro release where CVE-2026-42945 has a known fix. Run the listed command on that distro to remediate.

Ubuntu jammy

Source: Ubuntu USN

nginx→ fixed in1.18.0-6ubuntu14.11USN-8271-1
```
sudo apt-get install --only-upgrade -y nginx
```
libnginx-mod-http-auth-pam→ fixed in1.18.0-6ubuntu14.11USN-8271-1
```
sudo apt-get install --only-upgrade -y libnginx-mod-http-auth-pam
```
libnginx-mod-http-cache-purge→ fixed in1.18.0-6ubuntu14.11USN-8271-1
```
sudo apt-get install --only-upgrade -y libnginx-mod-http-cache-purge
```
libnginx-mod-http-dav-ext→ fixed in1.18.0-6ubuntu14.11USN-8271-1
```
sudo apt-get install --only-upgrade -y libnginx-mod-http-dav-ext
```
libnginx-mod-http-echo→ fixed in1.18.0-6ubuntu14.11USN-8271-1
```
sudo apt-get install --only-upgrade -y libnginx-mod-http-echo
```
libnginx-mod-http-fancyindex→ fixed in1.18.0-6ubuntu14.11USN-8271-1
```
sudo apt-get install --only-upgrade -y libnginx-mod-http-fancyindex
```
libnginx-mod-http-geoip→ fixed in1.18.0-6ubuntu14.11USN-8271-1
```
sudo apt-get install --only-upgrade -y libnginx-mod-http-geoip
```
libnginx-mod-http-geoip2→ fixed in1.18.0-6ubuntu14.11USN-8271-1
```
sudo apt-get install --only-upgrade -y libnginx-mod-http-geoip2
```
libnginx-mod-http-headers-more-filter→ fixed in1.18.0-6ubuntu14.11USN-8271-1
```
sudo apt-get install --only-upgrade -y libnginx-mod-http-headers-more-filter
```
libnginx-mod-http-image-filter→ fixed in1.18.0-6ubuntu14.11USN-8271-1
```
sudo apt-get install --only-upgrade -y libnginx-mod-http-image-filter
```
libnginx-mod-http-ndk→ fixed in1.18.0-6ubuntu14.11USN-8271-1
```
sudo apt-get install --only-upgrade -y libnginx-mod-http-ndk
```
libnginx-mod-http-perl→ fixed in1.18.0-6ubuntu14.11USN-8271-1
```
sudo apt-get install --only-upgrade -y libnginx-mod-http-perl
```
libnginx-mod-http-subs-filter→ fixed in1.18.0-6ubuntu14.11USN-8271-1
```
sudo apt-get install --only-upgrade -y libnginx-mod-http-subs-filter
```
libnginx-mod-http-uploadprogress→ fixed in1.18.0-6ubuntu14.11USN-8271-1
```
sudo apt-get install --only-upgrade -y libnginx-mod-http-uploadprogress
```
libnginx-mod-http-upstream-fair→ fixed in1.18.0-6ubuntu14.11USN-8271-1
```
sudo apt-get install --only-upgrade -y libnginx-mod-http-upstream-fair
```
libnginx-mod-http-xslt-filter→ fixed in1.18.0-6ubuntu14.11USN-8271-1
```
sudo apt-get install --only-upgrade -y libnginx-mod-http-xslt-filter
```
libnginx-mod-mail→ fixed in1.18.0-6ubuntu14.11USN-8271-1
```
sudo apt-get install --only-upgrade -y libnginx-mod-mail
```
libnginx-mod-nchan→ fixed in1.18.0-6ubuntu14.11USN-8271-1
```
sudo apt-get install --only-upgrade -y libnginx-mod-nchan
```
libnginx-mod-rtmp→ fixed in1.18.0-6ubuntu14.11USN-8271-1
```
sudo apt-get install --only-upgrade -y libnginx-mod-rtmp
```
libnginx-mod-stream→ fixed in1.18.0-6ubuntu14.11USN-8271-1
```
sudo apt-get install --only-upgrade -y libnginx-mod-stream
```
libnginx-mod-stream-geoip→ fixed in1.18.0-6ubuntu14.11USN-8271-1
```
sudo apt-get install --only-upgrade -y libnginx-mod-stream-geoip
```
libnginx-mod-stream-geoip2→ fixed in1.18.0-6ubuntu14.11USN-8271-1
```
sudo apt-get install --only-upgrade -y libnginx-mod-stream-geoip2
```
nginx-common→ fixed in1.18.0-6ubuntu14.11USN-8271-1
```
sudo apt-get install --only-upgrade -y nginx-common
```
nginx-core→ fixed in1.18.0-6ubuntu14.11USN-8271-1
```
sudo apt-get install --only-upgrade -y nginx-core
```
nginx-doc→ fixed in1.18.0-6ubuntu14.11USN-8271-1
```
sudo apt-get install --only-upgrade -y nginx-doc
```
nginx-extras→ fixed in1.18.0-6ubuntu14.11USN-8271-1
```
sudo apt-get install --only-upgrade -y nginx-extras
```
nginx-full→ fixed in1.18.0-6ubuntu14.11USN-8271-1
```
sudo apt-get install --only-upgrade -y nginx-full
```
nginx-light→ fixed in1.18.0-6ubuntu14.11USN-8271-1
```
sudo apt-get install --only-upgrade -y nginx-light
```

Ubuntu noble

Source: Ubuntu USN

nginx→ fixed in1.24.0-2ubuntu7.8USN-8271-1

sudo apt-get install --only-upgrade -y nginx

libnginx-mod-http-geoip→ fixed in1.24.0-2ubuntu7.8USN-8271-1

sudo apt-get install --only-upgrade -y libnginx-mod-http-geoip

libnginx-mod-http-image-filter→ fixed in1.24.0-2ubuntu7.8USN-8271-1

sudo apt-get install --only-upgrade -y libnginx-mod-http-image-filter

libnginx-mod-http-perl→ fixed in1.24.0-2ubuntu7.8USN-8271-1

sudo apt-get install --only-upgrade -y libnginx-mod-http-perl

libnginx-mod-http-xslt-filter→ fixed in1.24.0-2ubuntu7.8USN-8271-1

sudo apt-get install --only-upgrade -y libnginx-mod-http-xslt-filter

libnginx-mod-mail→ fixed in1.24.0-2ubuntu7.8USN-8271-1

sudo apt-get install --only-upgrade -y libnginx-mod-mail

libnginx-mod-stream→ fixed in1.24.0-2ubuntu7.8USN-8271-1

sudo apt-get install --only-upgrade -y libnginx-mod-stream

libnginx-mod-stream-geoip→ fixed in1.24.0-2ubuntu7.8USN-8271-1

sudo apt-get install --only-upgrade -y libnginx-mod-stream-geoip

nginx-common→ fixed in1.24.0-2ubuntu7.8USN-8271-1

sudo apt-get install --only-upgrade -y nginx-common

nginx-core→ fixed in1.24.0-2ubuntu7.8USN-8271-1

sudo apt-get install --only-upgrade -y nginx-core

nginx-dev→ fixed in1.24.0-2ubuntu7.8USN-8271-1

sudo apt-get install --only-upgrade -y nginx-dev

nginx-doc→ fixed in1.24.0-2ubuntu7.8USN-8271-1

sudo apt-get install --only-upgrade -y nginx-doc

nginx-extras→ fixed in1.24.0-2ubuntu7.8USN-8271-1

sudo apt-get install --only-upgrade -y nginx-extras

nginx-full→ fixed in1.24.0-2ubuntu7.8USN-8271-1

sudo apt-get install --only-upgrade -y nginx-full

nginx-light→ fixed in1.24.0-2ubuntu7.8USN-8271-1

sudo apt-get install --only-upgrade -y nginx-light

Ubuntu questing

Source: Ubuntu USN

nginx→ fixed in1.28.0-6ubuntu1.3USN-8271-1

sudo apt-get install --only-upgrade -y nginx

libnginx-mod-http-geoip→ fixed in1.28.0-6ubuntu1.3USN-8271-1

sudo apt-get install --only-upgrade -y libnginx-mod-http-geoip

libnginx-mod-http-image-filter→ fixed in1.28.0-6ubuntu1.3USN-8271-1

sudo apt-get install --only-upgrade -y libnginx-mod-http-image-filter

libnginx-mod-http-perl→ fixed in1.28.0-6ubuntu1.3USN-8271-1

sudo apt-get install --only-upgrade -y libnginx-mod-http-perl

libnginx-mod-http-xslt-filter→ fixed in1.28.0-6ubuntu1.3USN-8271-1

sudo apt-get install --only-upgrade -y libnginx-mod-http-xslt-filter

libnginx-mod-mail→ fixed in1.28.0-6ubuntu1.3USN-8271-1

sudo apt-get install --only-upgrade -y libnginx-mod-mail

libnginx-mod-stream→ fixed in1.28.0-6ubuntu1.3USN-8271-1

sudo apt-get install --only-upgrade -y libnginx-mod-stream

Are YOU affected by CVE-2026-42945?

5-second check on your actual server. Reads /etc/os-release, uname -r, and the distro's package manager; matches against this same cross-source index live.

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