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Vulnerabilities in the PHP language itself, and which PHP versions they affect.

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CVE-2020-7066

MEDIUM 4.3 CVSS 3.1
Published
April 1, 2020
Last modified
June 17, 2026
NVD status
Modified
Reported by
security@php.net
Weakness
CWE-170
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N

Description

In PHP versions 7.2.x below 7.2.29, 7.3.x below 7.3.16 and 7.4.x below 7.4.4, while using get_headers() with user-supplied URL, if the URL contains zero (\0) character, the URL will be silently truncated at it. This may cause some software to make incorrect assumptions about the target of the get_headers() and possibly send some information to a wrong server.

Affected products and versions

  • PHP — From 7.2.0 (including) to 7.2.29 (excluding)
  • PHP — From 7.3.0 (including) to 7.3.16 (excluding)
  • PHP — From 7.4.0 (including) to 7.4.4 (excluding)

References

  • lists.opensuse.org http://lists.opensuse.org/opensuse-security-announce/2020-05/msg00025.html Third Party Advisory
  • bugs.php.net https://bugs.php.net/bug.php?id=79329 Exploit, Issue Tracking, Patch, Vendor Advisory
  • lists.debian.org https://lists.debian.org/debian-lts-announce/2020/04/msg00021.html Third Party Advisory
  • security.netapp.com https://security.netapp.com/advisory/ntap-20200403-0001/ Third Party Advisory
  • usn.ubuntu.com https://usn.ubuntu.com/4330-2/ Third Party Advisory
  • www.debian.org https://www.debian.org/security/2020/dsa-4717 Third Party Advisory
  • www.debian.org https://www.debian.org/security/2020/dsa-4719 Third Party Advisory
  • www.tenable.com https://www.tenable.com/security/tns-2021-14 Patch, Third Party Advisory
  • nvd.nist.gov Official NVD record