CVE-2026-45372 · cross-distro fix matrix

CVE-2026-45372: It was discovered that cpp-httplib incorrectly percent-decoded HTTP

Affects 4 Linux releases across 12 (distro × package) combinations. First disclosed: 2026-05-29.

CVSS v3:CRITICAL · 9.9(NVD-published)

Fix per ecosystem

Each block below is a distro release where CVE-2026-45372 has a known fix. Run the listed command on that distro to remediate.

Ubuntu jammy

Source: Ubuntu USN

cpp-httplib→ fixed in0.10.3+ds-1ubuntu0.1~esm2USN-8470-1
```
sudo apt-get install --only-upgrade -y cpp-httplib
```
libcpp-httplib-dev→ fixed in0.10.3+ds-1ubuntu0.1~esm2USN-8470-1
```
sudo apt-get install --only-upgrade -y libcpp-httplib-dev
```
libcpp-httplib0→ fixed in0.10.3+ds-1ubuntu0.1~esm2USN-8470-1
```
sudo apt-get install --only-upgrade -y libcpp-httplib0
```

Ubuntu noble

Source: Ubuntu USN

cpp-httplib→ fixed in0.14.3+ds-1.1ubuntu0.1~esm2USN-8470-1
```
sudo apt-get install --only-upgrade -y cpp-httplib
```
libcpp-httplib-dev→ fixed in0.14.3+ds-1.1ubuntu0.1~esm2USN-8470-1
```
sudo apt-get install --only-upgrade -y libcpp-httplib-dev
```
libcpp-httplib0.14t64→ fixed in0.14.3+ds-1.1ubuntu0.1~esm2USN-8470-1
```
sudo apt-get install --only-upgrade -y libcpp-httplib0.14t64
```

Ubuntu questing

Source: Ubuntu USN

cpp-httplib→ fixed in0.18.7-1ubuntu0.25.10.2USN-8470-1
```
sudo apt-get install --only-upgrade -y cpp-httplib
```
libcpp-httplib-dev→ fixed in0.18.7-1ubuntu0.25.10.2USN-8470-1
```
sudo apt-get install --only-upgrade -y libcpp-httplib-dev
```
libcpp-httplib0.18→ fixed in0.18.7-1ubuntu0.25.10.2USN-8470-1
```
sudo apt-get install --only-upgrade -y libcpp-httplib0.18
```

Ubuntu resolute

Source: Ubuntu USN

cpp-httplib→ fixed in0.26.0+ds-2ubuntu3+esm1USN-8470-1
```
sudo apt-get install --only-upgrade -y cpp-httplib
```
libcpp-httplib-dev→ fixed in0.26.0+ds-2ubuntu3+esm1USN-8470-1
```
sudo apt-get install --only-upgrade -y libcpp-httplib-dev
```
libcpp-httplib0.26→ fixed in0.26.0+ds-2ubuntu3+esm1USN-8470-1
```
sudo apt-get install --only-upgrade -y libcpp-httplib0.26
```

Are YOU affected by CVE-2026-45372?

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.

curl https://mindsparkstack.com/scan.sh | bash

Form-based quickscan View on NVD

Continuous monitoring beats manual checking

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