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Vulnerability record · CVE-2022-31630 · published 14 November 2022

CVE-2022-31630: Php integer overflow vulnerability

Php · Php

In PHP versions prior to 7.4.33, 8.0.25 and 8.1.12, when using imageloadfont() function in gd extension, it is possible to supply a specially crafted font file, such as if the loaded font is used with imagechar() function, the read outside allocated buffer will be used. This can lead to crashes or disclosure of confidential information. 

7.1 CVSS 3.1 High EPSS 2.3% · top 17.5% CWE-131 · CWE-131CWE-190 · Integer overflow
7.1CVSS 3.1 base score
2.3%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
2References, 2 tagged exploit
17 Jun 2026Last modified by NVD

Description

In PHP versions prior to 7.4.33, 8.0.25 and 8.1.12, when using imageloadfont() function in gd extension, it is possible to supply a specially crafted font file, such as if the loaded font is used with imagechar() function, the read outside allocated buffer will be used. This can lead to crashes or disclosure of confidential information. 

CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:N/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=81739 ExploitIssue TrackingPatchVendor Advisory
https://bugs.php.net/bug.php?id=81739 ExploitIssue TrackingPatchVendor 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-2022-31630), CISA KEV, FIRST EPSS (scores of 2026-09-29). This page is refreshed as NVD updates the record.