CVE catalog
CVE-2021-21705
Security update for php7
- Severity
- Medium · CVSS 5.3
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N - Published
- Updated
- Source
- [NVD] · [CVE record]
- EPSS
- 2.09% · Oct 25, 2026
In PHP versions 7.3.x below 7.3.29, 7.4.x below 7.4.21 and 8.0.x below 8.0.8, when using URL validation functionality via filter_var() function with FILTER_VALIDATE_URL parameter, an URL with invalid password field can be accepted as valid. This can lead to the code incorrectly parsing the URL and potentially leading to other security implications - like contacting a wrong server or making a wrong access decision.
Vulnerable and fixed packages
Distribution-reported package versions and fixes. These do not depend on matching against the OpenFactory package catalog.
| Distribution | Package | Release | Version | Status |
|---|---|---|---|---|
| Debian | php7.4 | 11 | 7.4.21-1+deb11u1 | fixed |
| Ubuntu | php5 | pro | 5.5.3+dfsg-1ubuntu2 | vulnerable |
| Ubuntu | php5 | pro | 5.5.3+dfsg-1ubuntu3 | vulnerable |
| Ubuntu | php5 | pro | 5.5.6+dfsg-1ubuntu1 | vulnerable |
| Ubuntu | php5 | pro | 5.5.6+dfsg-1ubuntu2 | vulnerable |
| Ubuntu | php5 | pro | 5.5.8+dfsg-2ubuntu1 | vulnerable |
| Ubuntu | php5 | pro | 5.5.9+dfsg-1ubuntu1 | vulnerable |
| Ubuntu | php5 | pro | 5.5.9+dfsg-1ubuntu2 | vulnerable |
| Ubuntu | php5 | pro | 5.5.9+dfsg-1ubuntu3 | vulnerable |
| Ubuntu | php5 | pro | 5.5.9+dfsg-1ubuntu4 | vulnerable |
| Ubuntu | php5 | pro | 5.5.9+dfsg-1ubuntu4.1 | vulnerable |
| Ubuntu | php5 | pro | 5.5.9+dfsg-1ubuntu4.2 | vulnerable |
| Ubuntu | php5 | pro | 5.5.9+dfsg-1ubuntu4.3 | vulnerable |
| Ubuntu | php5 | pro | 5.5.9+dfsg-1ubuntu4.4 | vulnerable |
| Ubuntu | php5 | pro | 5.5.9+dfsg-1ubuntu4.5 | vulnerable |
| Ubuntu | php5 | pro | 5.5.9+dfsg-1ubuntu4.6 | vulnerable |
| Ubuntu | php5 | pro | 5.5.9+dfsg-1ubuntu4.7 | vulnerable |
| Ubuntu | php5 | pro | 5.5.9+dfsg-1ubuntu4.9 | vulnerable |
| Ubuntu | php5 | pro | 5.5.9+dfsg-1ubuntu4.11 | vulnerable |
| Ubuntu | php5 | pro | 5.5.9+dfsg-1ubuntu4.12 | vulnerable |
| Ubuntu | php5 | pro | 5.5.9+dfsg-1ubuntu4.13 | vulnerable |
| Ubuntu | php5 | pro | 5.5.9+dfsg-1ubuntu4.14 | vulnerable |
| Ubuntu | php5 | pro | 5.5.9+dfsg-1ubuntu4.16 | vulnerable |
| Ubuntu | php5 | pro | 5.5.9+dfsg-1ubuntu4.17 | vulnerable |
| Ubuntu | php5 | pro | 5.5.9+dfsg-1ubuntu4.19 | vulnerable |
| Ubuntu | php5 | pro | 5.5.9+dfsg-1ubuntu4.20 | vulnerable |
| Ubuntu | php5 | pro | 5.5.9+dfsg-1ubuntu4.21 | vulnerable |
| Ubuntu | php5 | pro | 5.5.9+dfsg-1ubuntu4.22 | vulnerable |
| Ubuntu | php5 | pro | 5.5.9+dfsg-1ubuntu4.23 | vulnerable |
| Ubuntu | php5 | pro | 5.5.9+dfsg-1ubuntu4.24 | vulnerable |
| Ubuntu | php5 | pro | 5.5.9+dfsg-1ubuntu4.25 | vulnerable |
| Ubuntu | php5 | pro | 5.5.9+dfsg-1ubuntu4.26 | vulnerable |
| Ubuntu | php5 | pro | 5.5.9+dfsg-1ubuntu4.27 | vulnerable |
| Ubuntu | php5 | pro | 5.5.9+dfsg-1ubuntu4.29 | vulnerable |
| Ubuntu | php5 | pro | 5.5.9+dfsg-1ubuntu4.29+esm1 | vulnerable |
| Ubuntu | php5 | pro | 5.5.9+dfsg-1ubuntu4.29+esm2 | vulnerable |
| Ubuntu | php5 | pro | 5.5.9+dfsg-1ubuntu4.29+esm3 | vulnerable |
| Ubuntu | php5 | pro | 5.5.9+dfsg-1ubuntu4.29+esm4 | vulnerable |
| Ubuntu | php5 | pro | 5.5.9+dfsg-1ubuntu4.29+esm5 | vulnerable |
| Ubuntu | php5 | pro | 5.5.9+dfsg-1ubuntu4.29+esm6 | vulnerable |
| Ubuntu | php5 | pro | 5.5.9+dfsg-1ubuntu4.29+esm8 | vulnerable |
| Ubuntu | php5 | pro | 5.5.9+dfsg-1ubuntu4.29+esm10 | vulnerable |
| Ubuntu | php5 | pro | 5.5.9+dfsg-1ubuntu4.29+esm11 | vulnerable |
| Ubuntu | php5 | pro | 5.5.9+dfsg-1ubuntu4.29+esm12 | vulnerable |
| Ubuntu | php5 | pro | 5.5.9+dfsg-1ubuntu4.29+esm13 | vulnerable |
| Ubuntu | php5 | pro | 5.5.9+dfsg-1ubuntu4.29+esm14 | fixed |
| Ubuntu | php7.0 | pro | 7.0.1-5 | vulnerable |
| Ubuntu | php7.0 | pro | 7.0.1-6 | vulnerable |
| Ubuntu | php7.0 | pro | 7.0.2-1 | vulnerable |
| Ubuntu | php7.0 | pro | 7.0.2-3 | vulnerable |
| Ubuntu | php7.0 | pro | 7.0.2-4 | vulnerable |
| Ubuntu | php7.0 | pro | 7.0.2-5 | vulnerable |
| Ubuntu | php7.0 | pro | 7.0.3-2 | vulnerable |
| Ubuntu | php7.0 | pro | 7.0.3-3 | vulnerable |
| Ubuntu | php7.0 | pro | 7.0.3-9ubuntu1 | vulnerable |
| Ubuntu | php7.0 | pro | 7.0.4-5ubuntu1 | vulnerable |
| Ubuntu | php7.0 | pro | 7.0.4-5ubuntu2 | vulnerable |
| Ubuntu | php7.0 | pro | 7.0.4-7ubuntu1 | vulnerable |
| Ubuntu | php7.0 | pro | 7.0.4-7ubuntu2 | vulnerable |
| Ubuntu | php7.0 | pro | 7.0.4-7ubuntu2.1 | vulnerable |
| Ubuntu | php7.0 | pro | 7.0.8-0ubuntu0.16.04.1 | vulnerable |
| Ubuntu | php7.0 | pro | 7.0.8-0ubuntu0.16.04.2 | vulnerable |
| Ubuntu | php7.0 | pro | 7.0.8-0ubuntu0.16.04.3 | vulnerable |
| Ubuntu | php7.0 | pro | 7.0.13-0ubuntu0.16.04.1 | vulnerable |
| Ubuntu | php7.0 | pro | 7.0.15-0ubuntu0.16.04.1 | vulnerable |
| Ubuntu | php7.0 | pro | 7.0.15-0ubuntu0.16.04.2 | vulnerable |
| Ubuntu | php7.0 | pro | 7.0.15-0ubuntu0.16.04.4 | vulnerable |
| Ubuntu | php7.0 | pro | 7.0.18-0ubuntu0.16.04.1 | vulnerable |
| Ubuntu | php7.0 | pro | 7.0.22-0ubuntu0.16.04.1 | vulnerable |
| Ubuntu | php7.0 | pro | 7.0.25-0ubuntu0.16.04.1 | vulnerable |
| Ubuntu | php7.0 | pro | 7.0.28-0ubuntu0.16.04.1 | vulnerable |
| Ubuntu | php7.0 | pro | 7.0.30-0ubuntu0.16.04.1 | vulnerable |
| Ubuntu | php7.0 | pro | 7.0.32-0ubuntu0.16.04.1 | vulnerable |
| Ubuntu | php7.0 | pro | 7.0.33-0ubuntu0.16.04.1 | vulnerable |
| Ubuntu | php7.0 | pro | 7.0.33-0ubuntu0.16.04.2 | vulnerable |
| Ubuntu | php7.0 | pro | 7.0.33-0ubuntu0.16.04.3 | vulnerable |
| Ubuntu | php7.0 | pro | 7.0.33-0ubuntu0.16.04.4 | vulnerable |
| Ubuntu | php7.0 | pro | 7.0.33-0ubuntu0.16.04.5 | vulnerable |
| Ubuntu | php7.0 | pro | 7.0.33-0ubuntu0.16.04.6 | vulnerable |
| Ubuntu | php7.0 | pro | 7.0.33-0ubuntu0.16.04.7 | vulnerable |
| Ubuntu | php7.0 | pro | 7.0.33-0ubuntu0.16.04.9 | vulnerable |
| Ubuntu | php7.0 | pro | 7.0.33-0ubuntu0.16.04.11 | vulnerable |
| Ubuntu | php7.0 | pro | 7.0.33-0ubuntu0.16.04.12 | vulnerable |
| Ubuntu | php7.0 | pro | 7.0.33-0ubuntu0.16.04.14 | vulnerable |
| Ubuntu | php7.0 | pro | 7.0.33-0ubuntu0.16.04.15 | vulnerable |
| Ubuntu | php7.0 | pro | 7.0.33-0ubuntu0.16.04.16 | vulnerable |
| Ubuntu | php7.0 | pro | 7.0.33-0ubuntu0.16.04.16+esm1 | fixed |
| Ubuntu | php7.2 | 18.04 | 7.2.1-1ubuntu2 | vulnerable |
| Ubuntu | php7.2 | 18.04 | 7.2.2-1ubuntu1 | vulnerable |
| Ubuntu | php7.2 | 18.04 | 7.2.2-1ubuntu2 | vulnerable |
| Ubuntu | php7.2 | 18.04 | 7.2.3-1ubuntu1 | vulnerable |
| Ubuntu | php7.2 | 18.04 | 7.2.5-0ubuntu0.18.04.1 | vulnerable |
| Ubuntu | php7.2 | 18.04 | 7.2.7-0ubuntu0.18.04.1 | vulnerable |
| Ubuntu | php7.2 | 18.04 | 7.2.7-0ubuntu0.18.04.2 | vulnerable |
| Ubuntu | php7.2 | 18.04 | 7.2.10-0ubuntu0.18.04.1 | vulnerable |
| Ubuntu | php7.2 | 18.04 | 7.2.15-0ubuntu0.18.04.1 | vulnerable |
| Ubuntu | php7.2 | 18.04 | 7.2.15-0ubuntu0.18.04.2 | vulnerable |
| Ubuntu | php7.2 | 18.04 | 7.2.17-0ubuntu0.18.04.1 | vulnerable |
| Ubuntu | php7.2 | 18.04 | 7.2.19-0ubuntu0.18.04.1 | vulnerable |
| Ubuntu | php7.2 | 18.04 | 7.2.19-0ubuntu0.18.04.2 | vulnerable |
| Ubuntu | php7.2 | 18.04 | 7.2.24-0ubuntu0.18.04.1 | vulnerable |
| Ubuntu | php7.2 | 18.04 | 7.2.24-0ubuntu0.18.04.2 | vulnerable |
| Ubuntu | php7.2 | 18.04 | 7.2.24-0ubuntu0.18.04.3 | vulnerable |
| Ubuntu | php7.2 | 18.04 | 7.2.24-0ubuntu0.18.04.4 | vulnerable |
| Ubuntu | php7.2 | 18.04 | 7.2.24-0ubuntu0.18.04.6 | vulnerable |
| Ubuntu | php7.2 | 18.04 | 7.2.24-0ubuntu0.18.04.7 | vulnerable |
| Ubuntu | php7.2 | 18.04 | 7.2.24-0ubuntu0.18.04.8 | fixed |
| Ubuntu | php7.4 | 20.04 | 7.4.3-4build1 | vulnerable |
| Ubuntu | php7.4 | 20.04 | 7.4.3-4build2 | vulnerable |
| Ubuntu | php7.4 | 20.04 | 7.4.3-4ubuntu1 | vulnerable |
| Ubuntu | php7.4 | 20.04 | 7.4.3-4ubuntu1.1 | vulnerable |
| Ubuntu | php7.4 | 20.04 | 7.4.3-4ubuntu2.2 | vulnerable |
| Ubuntu | php7.4 | 20.04 | 7.4.3-4ubuntu2.4 | vulnerable |
| Ubuntu | php7.4 | 20.04 | 7.4.3-4ubuntu2.5 | fixed |
| Suse | php72 | linux enterprise module for web and scripting 12 | 7.2.5-1.63.2 | fixed |
| Suse | php72 | linux enterprise software development kit 12 sp5 | 7.2.5-1.63.2 | fixed |
| Opensuse | php7 | leap 15.3 | 7.2.5-4.76.5 | fixed |
Fixed-version evidence
| Distribution | Package | Type | Release | Fixed version | Urgency | Origin | Bugs |
|---|---|---|---|---|---|---|---|
| Debian | php7.4 | deb | 11 | 7.4.21-1+deb11u1 | Not reported | DEBIAN-CVE-2021-21705 | Not reported |
| Ubuntu | php5 | deb | pro | 5.5.9+dfsg-1ubuntu4.29+esm14 | Not reported | UBUNTU-CVE-2021-21705 | Not reported |
| Ubuntu | php7.0 | deb | pro | 7.0.33-0ubuntu0.16.04.16+esm1 | Not reported | UBUNTU-CVE-2021-21705 | Not reported |
| Ubuntu | php7.2 | deb | 18.04 | 7.2.24-0ubuntu0.18.04.8 | Not reported | UBUNTU-CVE-2021-21705 | Not reported |
| Ubuntu | php7.4 | deb | 20.04 | 7.4.3-4ubuntu2.5 | Not reported | UBUNTU-CVE-2021-21705 | Not reported |
| Suse | php72 | rpm | linux enterprise module for web and scripting 12 | 7.2.5-1.63.2 | Not reported | SUSE-SU-2021:2564-1 | Not reported |
| Suse | php72 | rpm | linux enterprise software development kit 12 sp5 | 7.2.5-1.63.2 | Not reported | SUSE-SU-2021:2564-1 | Not reported |
| Opensuse | php7 | rpm | leap 15.3 | 7.2.5-4.76.5 | Not reported | OPENSUSE-SU-2021:2575-1 | Not reported |
OpenFactory catalog packages
No matching packages in this catalog.
Observed:
References
- [https://ftp.suse.com/pub/projects/security/csaf/rhsa-2022_1935.json]
- [https://osv.dev/vulnerability/DEBIAN-CVE-2021-21705]
- [https://osv.dev/vulnerability/SUSE-SU-2021:2564-1]
- [https://osv.dev/vulnerability/UBUNTU-CVE-2021-21705]
- [https://osv.dev/vulnerability/openSUSE-SU-2021:2575-1]
- [https://security.access.redhat.com/data/csaf/v2/vex/2021/cve-2021-21705.json]
[FIRST EPSS] · [OSV Package Vulnerability Database] · [Red Hat security advisories and VEX] · [SUSE security advisories and VEX]