CVE-2020-7066

Name: CVE-2020-7066
Creator: NVD / NIST
Published: 2020-04-01T04:15:14.02+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 4.3/10EPSS 2.77%

Last modified Jun 17, 2026

CVE-2020-7066 is a medium-severity vulnerability rated 4.3/10 on the CVSS scale. 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.. EPSS estimates a 2.77% chance of exploitation in the next 30 days.

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.

Metrics

CVSS 3.1

4.3/10

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N

EPSS Probability

2.77%

84.4th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-170

Affected Software

Vendor	Product	Versions
Php	Php	>= 7.2.0, < 7.2.29
Php	Php	>= 7.3.0, < 7.3.16
Php	Php	>= 7.4.0, < 7.4.4
Tenable	Tenable.Sc	< 5.19.0
Tenable	Tenable.Sc	5.19.0
Opensuse	Leap	15.1
Debian	Debian Linux	8.0
Debian	Debian Linux	9.0
Debian	Debian Linux	10.0

References

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

Timeline

Published: Apr 1, 2020
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2020-7066?

How severe is CVE-2020-7066?

CVE-2020-7066 has a CVSS score of 4.3/10 (MEDIUM severity). The EPSS model estimates a 2.77% probability of exploitation in the next 30 days.

How do I fix CVE-2020-7066?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2020-7066?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST