CVE-2026-28356 · cross-distro fix matrix

CVE-2026-28356: It was discovered that multipart had an ambiguous regular expression

Affects 3 Linux releases across 5 (distro × package) combinations. First disclosed: 2026-05-28.

Fix per ecosystem

Each block below is a distro release where CVE-2026-28356 has a known fix. Run the listed command on that distro to remediate.

Ubuntu questing

Source: Ubuntu USN

multipart→ fixed in1.2.1-2+deb13u1build0.25.10.1USN-8343-1
```
sudo apt-get install --only-upgrade -y multipart
```
python3-multipart→ fixed in1.2.1-2+deb13u1build0.25.10.1USN-8343-1
```
sudo apt-get install --only-upgrade -y python3-multipart
```

Ubuntu resolute

Source: Ubuntu USN

multipart→ fixed in1.3.0-3ubuntu0.1USN-8343-1

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

python3-multipart→ fixed in1.3.0-3ubuntu0.1USN-8343-1

sudo apt-get install --only-upgrade -y python3-multipart

Debian trixie

Source: Debian Security Tracker

multipart→ fixed in1.2.1-2+deb13u1urgency: not yet assigned
```
sudo apt-get install --only-upgrade -y multipart
```

Are YOU affected by CVE-2026-28356?

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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