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Vulnerability record · CVE-2022-31627 · published 28 July 2022

CVE-2022-31627: Php out-of-bounds write vulnerability

Php · Php

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.

9.8 CVSS 3.1 Critical EPSS 2.1% · top 19.2% CWE-590 · CWE-590CWE-787 · Out-of-bounds write
9.8CVSS 3.1 base score
2.1%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
6References, 2 tagged exploit
17 Jun 2026Last modified by NVD

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.

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

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://bugs.php.net/bug.php?id=81723 ExploitIssue TrackingPatchThird Party Advisory
https://security.gentoo.org/glsa/202209-20 Third Party Advisory
https://security.netapp.com/advisory/ntap-20220826-0008/ Third Party Advisory
https://bugs.php.net/bug.php?id=81723 ExploitIssue TrackingPatchThird Party Advisory
https://security.gentoo.org/glsa/202209-20 Third Party Advisory
https://security.netapp.com/advisory/ntap-20220826-0008/ Third Party Advisory

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Same products first, then exploited flaws of the same weakness class.

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Source: NIST National Vulnerability Database (record CVE-2022-31627), CISA KEV, FIRST EPSS (scores of 2026-09-29). This page is refreshed as NVD updates the record.