CVE-2021-30130 · cross-distro fix matrix

CVE-2021-30130: phpseclib before 2.0.31 and 3.x before 3.0.7 mishandles RSA PKCS#1 v1.5 signature verification.

Affects 3 Linux releases across 8 (distro × package) combinations.

Fix per ecosystem

Each block below is a distro release where CVE-2021-30130 has a known fix. Run the listed command on that distro to remediate.

Debian bullseye

Source: Debian Security Tracker

php-phpseclib→ fixed in2.0.30-2urgency: not yet assigned
```
sudo apt-get install --only-upgrade -y php-phpseclib
```
phpseclib→ fixed in1.0.19-3urgency: not yet assigned
```
sudo apt-get install --only-upgrade -y phpseclib
```

Debian bookworm

Source: Debian Security Tracker

php-phpseclib→ fixed in2.0.30-2urgency: not yet assigned
```
sudo apt-get install --only-upgrade -y php-phpseclib
```
php-phpseclib3→ fixed in3.0.7-1urgency: not yet assigned
```
sudo apt-get install --only-upgrade -y php-phpseclib3
```
phpseclib→ fixed in1.0.19-3urgency: not yet assigned
```
sudo apt-get install --only-upgrade -y phpseclib
```

Debian trixie

Source: Debian Security Tracker

php-phpseclib→ fixed in2.0.30-2urgency: not yet assigned
```
sudo apt-get install --only-upgrade -y php-phpseclib
```
php-phpseclib3→ fixed in3.0.7-1urgency: not yet assigned
```
sudo apt-get install --only-upgrade -y php-phpseclib3
```
phpseclib→ fixed in1.0.19-3urgency: not yet assigned
```
sudo apt-get install --only-upgrade -y phpseclib
```

Are YOU affected by CVE-2021-30130?

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

CVE-2021-30130dropped silently in your distro's update channel. Every new CVE is the same story. StackPatch runs the matcher hourly against all 5 sources and emails the exact remediation when something new applies to one of your servers. $99 lifetime, 50 founder seats, 30-day refund.

See StackPatch ($99 lifetime)