Debian Security Advisory

DLA-2654-1 composer -- LTS security update

Date Reported:
12 May 2021
Affected Packages:
Security database references:
In Mitre's CVE dictionary: CVE-2021-29472.
More information:

It was discovered that composer, a dependency manager for PHP, did not properly sanitize Mercurial URLs, which could lead to arbitrary code execution.

For Debian 9 stretch, this problem has been fixed in version 1.2.2-1+deb9u1.

We recommend that you upgrade your composer packages.

For the detailed security status of composer please refer to its security tracker page at:

Further information about Debian LTS security advisories, how to apply these updates to your system and frequently asked questions can be found at: