CVE-2025-1734 · cross-distro fix matrix

CVE-2025-1734: In PHP from 8.1.* before 8.1.32, from 8.2.* before 8.2.28, from 8.3.* before 8.3.19, from 8.4.* before 8.4.5, when receiving headers from HTTP server, the headers missing a colon (:) are treated as valid headers even though they are not. This may confuse applications into accepting invalid headers.

Affects 7 Linux releases across 8 (distro × package) combinations.

Fix per ecosystem

Each block below is a distro release where CVE-2025-1734 has a known fix. Run the listed command on that distro to remediate.

Debian bullseye

Source: Debian Security Tracker

php7.4→ fixed in7.4.33-1+deb11u8urgency: not yet assigned
```
sudo apt-get install --only-upgrade -y php7.4
```

Debian bookworm

Source: Debian Security Tracker

php8.2→ fixed in8.2.28-1~deb12u1urgency: not yet assigned
```
sudo apt-get install --only-upgrade -y php8.2
```

Debian trixie

Source: Debian Security Tracker

php8.4→ fixed in8.4.5-1urgency: not yet assigned
```
sudo apt-get install --only-upgrade -y php8.4
```

Alpine v3.20

Source: Alpine secdb

php82→ fixed in8.2.28-r0
```
apk update && apk add --upgrade php82
```

Alpine v3.21

Source: Alpine secdb

php82→ fixed in8.2.28-r0
```
apk update && apk add --upgrade php82
```
php83→ fixed in8.3.18-r0
```
apk update && apk add --upgrade php83
```

Alpine edge

Source: Alpine secdb

php83→ fixed in8.3.18-r0
```
apk update && apk add --upgrade php83
```

Alpine v3.19

Source: Alpine secdb

php81→ fixed in8.1.32-r0
```
apk update && apk add --upgrade php81
```

Are YOU affected by CVE-2025-1734?

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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