CVE-2026-41082 · cross-distro fix matrix

CVE-2026-41082: Andrew Nesbitt discovered that opam did not properly validate file

Affects 8 Linux releases across 18 (distro × package) combinations. First disclosed: 2026-05-07.

Fix per ecosystem

Each block below is a distro release where CVE-2026-41082 has a known fix. Run the listed command on that distro to remediate.

Ubuntu focal

Source: Ubuntu USN

opam→ fixed in2.0.5-1ubuntu1+esm1USN-8256-1
```
sudo apt-get install --only-upgrade -y opam
```
opam-doc→ fixed in2.0.5-1ubuntu1+esm1USN-8256-1
```
sudo apt-get install --only-upgrade -y opam-doc
```
opam-installer→ fixed in2.0.5-1ubuntu1+esm1USN-8256-1
```
sudo apt-get install --only-upgrade -y opam-installer
```

Ubuntu jammy

Source: Ubuntu USN

opam→ fixed in2.1.2-1+deb12u1build0.22.04.1USN-8256-1
```
sudo apt-get install --only-upgrade -y opam
```
opam-doc→ fixed in2.1.2-1+deb12u1build0.22.04.1USN-8256-1
```
sudo apt-get install --only-upgrade -y opam-doc
```
opam-installer→ fixed in2.1.2-1+deb12u1build0.22.04.1USN-8256-1
```
sudo apt-get install --only-upgrade -y opam-installer
```

Ubuntu noble

Source: Ubuntu USN

opam→ fixed in2.1.5-1ubuntu0.1~esm2USN-8256-1
```
sudo apt-get install --only-upgrade -y opam
```
opam-doc→ fixed in2.1.5-1ubuntu0.1~esm2USN-8256-1
```
sudo apt-get install --only-upgrade -y opam-doc
```
opam-installer→ fixed in2.1.5-1ubuntu0.1~esm2USN-8256-1
```
sudo apt-get install --only-upgrade -y opam-installer
```

Ubuntu questing

Source: Ubuntu USN

opam→ fixed in2.3.0-1+deb13u1build0.25.10.1USN-8256-1
```
sudo apt-get install --only-upgrade -y opam
```
opam-doc→ fixed in2.3.0-1+deb13u1build0.25.10.1USN-8256-1
```
sudo apt-get install --only-upgrade -y opam-doc
```
opam-installer→ fixed in2.3.0-1+deb13u1build0.25.10.1USN-8256-1
```
sudo apt-get install --only-upgrade -y opam-installer
```

Ubuntu resolute

Source: Ubuntu USN

opam→ fixed in2.5.0-1ubuntu0.1~esm1USN-8256-1
```
sudo apt-get install --only-upgrade -y opam
```
opam-doc→ fixed in2.5.0-1ubuntu0.1~esm1USN-8256-1
```
sudo apt-get install --only-upgrade -y opam-doc
```
opam-installer→ fixed in2.5.0-1ubuntu0.1~esm1USN-8256-1
```
sudo apt-get install --only-upgrade -y opam-installer
```

Debian bullseye

Source: Debian Security Tracker

opam→ fixed in2.0.8-1+deb11u1urgency: not yet assigned
```
sudo apt-get install --only-upgrade -y opam
```

Debian bookworm

Source: Debian Security Tracker

opam→ fixed in2.1.2-1+deb12u1urgency: not yet assigned
```
sudo apt-get install --only-upgrade -y opam
```

Debian trixie

Source: Debian Security Tracker

opam→ fixed in2.3.0-1+deb13u1urgency: not yet assigned
```
sudo apt-get install --only-upgrade -y opam
```

Are YOU affected by CVE-2026-41082?

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

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