CVE-2022-31628

Name: CVE-2022-31628
Creator: NVD / NIST
Published: 2022-09-28T23:15:09.497+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 5.5/10EPSS 0.56%

Last modified Jun 17, 2026

CVE-2022-31628 is a medium-severity vulnerability rated 5.5/10 on the CVSS scale. In PHP versions before 7.4.31, 8.0.24 and 8.1.11, the phar uncompressor code would recursively uncompress "quines" gzip files, resulting in an infinite loop.. EPSS estimates a 0.56% chance of exploitation in the next 30 days.

Description

In PHP versions before 7.4.31, 8.0.24 and 8.1.11, the phar uncompressor code would recursively uncompress "quines" gzip files, resulting in an infinite loop.

Metrics

CVSS 3.1

5.5/10

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

EPSS Probability

0.56%

42.6th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

Vendor	Product	Versions
Php	Php	< 7.4.31
Php	Php	>= 8.0.0, < 8.0.24
Php	Php	>= 8.1.0, < 8.1.11
Fedoraproject	Fedora	35
Fedoraproject	Fedora	36
Fedoraproject	Fedora	37
Debian	Debian Linux	10.0
Debian	Debian Linux	11.0

References

https://bugs.php.net/bug.php?id=81726Permissions Required, Third Party Advisory
https://lists.debian.org/debian-lts-announce/2022/12/msg00030.htmlMailing List, Third Party Advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/2L5SUVYGAKSWODUQPZFBUB3AL6E6CSEV/
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/VI3E6A3ZTH2RP7OMLJHSVFIEQBIFM6RF/
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/XNIEABBH5XCXLFWWZYIDE457SPEDZTXV/
https://security.gentoo.org/glsa/202211-03Third Party Advisory
https://security.netapp.com/advisory/ntap-20221209-0001/Third Party Advisory
https://www.debian.org/security/2022/dsa-5277Third Party Advisory
https://bugs.php.net/bug.php?id=81726Permissions Required, Third Party Advisory
https://lists.debian.org/debian-lts-announce/2022/12/msg00030.htmlMailing List, Third Party Advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/2L5SUVYGAKSWODUQPZFBUB3AL6E6CSEV/
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/VI3E6A3ZTH2RP7OMLJHSVFIEQBIFM6RF/
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/XNIEABBH5XCXLFWWZYIDE457SPEDZTXV/
https://security.gentoo.org/glsa/202211-03Third Party Advisory
https://security.netapp.com/advisory/ntap-20221209-0001/Third Party Advisory
https://www.debian.org/security/2022/dsa-5277Third Party Advisory

Timeline

Published: Sep 28, 2022
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2022-31628?

In PHP versions before 7.4.31, 8.0.24 and 8.1.11, the phar uncompressor code would recursively uncompress "quines" gzip files, resulting in an infinite loop.

How severe is CVE-2022-31628?

CVE-2022-31628 has a CVSS score of 5.5/10 (MEDIUM severity). The EPSS model estimates a 0.56% probability of exploitation in the next 30 days.

How do I fix CVE-2022-31628?

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-2022-31628?

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

Scan your code now

Source: NVD / NIST