CVE-2022-31627

Name: CVE-2022-31627
Creator: NVD / NIST
Published: 2022-07-28T06:15:07.547+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

CRITICALCVSS 9.8/10EPSS 1.65%

Last modified Jun 17, 2026

CVE-2022-31627 is a critical-severity vulnerability rated 9.8/10 on the CVSS scale. In PHP versions 8.1.x below 8.1.8, when fileinfo functions, such as finfo_buffer, due to incorrect patch applied to the third party code from libmagic, incorrect function may be used to free allocated memory, which may lead to heap corruption.. EPSS estimates a 1.65% chance of exploitation in the next 30 days.

Description

In PHP versions 8.1.x below 8.1.8, when fileinfo functions, such as finfo_buffer, due to incorrect patch applied to the third party code from libmagic, incorrect function may be used to free allocated memory, which may lead to heap corruption.

Metrics

CVSS 3.1

9.8/10

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

EPSS Probability

1.65%

73.5th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

Vendor	Product	Versions
Php	Php	>= 8.1.0, < 8.1.8

References

https://bugs.php.net/bug.php?id=81723Exploit, Issue Tracking, Patch, Third Party Advisory
https://security.gentoo.org/glsa/202209-20Third Party Advisory
https://security.netapp.com/advisory/ntap-20220826-0008/Third Party Advisory
https://bugs.php.net/bug.php?id=81723Exploit, Issue Tracking, Patch, Third Party Advisory
https://security.gentoo.org/glsa/202209-20Third Party Advisory
https://security.netapp.com/advisory/ntap-20220826-0008/Third Party Advisory

Timeline

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

Frequently Asked Questions

What is CVE-2022-31627?

How severe is CVE-2022-31627?

CVE-2022-31627 has a CVSS score of 9.8/10 (CRITICAL severity). The EPSS model estimates a 1.65% probability of exploitation in the next 30 days.

How do I fix CVE-2022-31627?

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-2022-31627?

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

Scan your code now

Source: NVD / NIST