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CVE-2021-29472 · cross-distro fix matrix

CVE-2021-29472: Composer is a dependency manager for PHP. URLs for Mercurial repositories in the root composer.json and package source download URLs are not sanitized correctly. Specifically crafted URL values allow code to be executed in the HgDriver if hg/Mercurial is installed on the system. The impact to Compos

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

Fix per ecosystem

Each block below is a distro release where CVE-2021-29472 has a known fix. Run the listed command on that distro to remediate.

Debian bullseye

Source: Debian Security Tracker

  • composer→ fixed in2.0.9-2urgency: not yet assigned
    sudo apt-get install --only-upgrade -y composer

Debian bookworm

Source: Debian Security Tracker

  • composer→ fixed in2.0.9-2urgency: not yet assigned
    sudo apt-get install --only-upgrade -y composer

Debian trixie

Source: Debian Security Tracker

  • composer→ fixed in2.0.9-2urgency: not yet assigned
    sudo apt-get install --only-upgrade -y composer

Alpine v3.20

Source: Alpine secdb

  • composer→ fixed in2.0.13-r0
    apk update && apk add --upgrade composer

Alpine v3.21

Source: Alpine secdb

  • composer→ fixed in2.0.13-r0
    apk update && apk add --upgrade composer

Alpine edge

Source: Alpine secdb

  • composer→ fixed in2.0.13-r0
    apk update && apk add --upgrade composer

Alpine v3.18

Source: Alpine secdb

  • composer→ fixed in2.0.13-r0
    apk update && apk add --upgrade composer

Alpine v3.19

Source: Alpine secdb

  • composer→ fixed in2.0.13-r0
    apk update && apk add --upgrade composer
Are YOU affected by CVE-2021-29472?

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.

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