Skip to content
OpenAdvisories
High DSA-5082-1 2 CVEs

php7.4 - security update

Published Feb 18, 2022 · Updated Mar 9, 2026

Ecosystem: Debian

Fixed packages 1

ReleasePackageFixed in
Debian · 11 php7.4 7.4.28-1+deb11u1

Vulnerabilities 2

  • High 8.2
    CVE-2021-21708

    UAF due to php_filter_float() failing

    In PHP versions 7.4.x below 7.4.28, 8.0.x below 8.0.16, and 8.1.x below 8.1.3, when using filter functions with FILTER_VALIDATE_FLOAT filter and min/max limits, if the filter fails, there is a possibility to trigger use of allocated memory after free, which c…

    PHP Group PHP php7 php7.4 Debian Ubuntu Alpine
  • Medium 5.3
    CVE-2021-21707 Public exploit EPSS 25%

    Special characters break path parsing in XML functions

    In PHP versions 7.3.x below 7.3.33, 7.4.x below 7.4.26 and 8.0.x below 8.0.13, certain XML parsing functions, like simplexml_load_file(), URL-decode the filename passed to them. If that filename contains URL-encoded NUL character, this may cause the function …

    PHP Group PHP php5 php7.0 Debian Ubuntu Alpine