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Vulnerability record · CVE-2022-4900 · published 2 November 2023

CVE-2022-4900: Php memory buffer overflow vulnerability

Php · Php

A vulnerability was found in PHP where setting the environment variable PHP_CLI_SERVER_WORKERS to a large value leads to a heap buffer overflow.

5.5 CVSS 3.1 Medium EPSS 0.37% · top 72.0% CWE-119 · Memory buffer overflowCWE-787 · Out-of-bounds write
5.5CVSS 3.1 base score
0.37%EPSS exploitation probability, 30 days
NoNot in CISA KEV
3Affected product versions listed by NVD
7References
17 Jun 2026Last modified by NVD

Description

A vulnerability was found in PHP where setting the environment variable PHP_CLI_SERVER_WORKERS to a large value leads to a heap buffer overflow.

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

Affected products

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

References

LinkTags
https://access.redhat.com/security/cve/CVE-2022-4900 Vendor Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=2179880 Issue Tracking
https://security.netapp.com/advisory/ntap-20231130-0008/ Third Party Advisory
https://access.redhat.com/security/cve/CVE-2022-4900 Vendor Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=2179880 Issue Tracking
https://lists.debian.org/debian-lts-announce/2024/10/msg00011.html
https://security.netapp.com/advisory/ntap-20231130-0008/ 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-2022-4900), CISA KEV, FIRST EPSS (scores of 2026-09-29). This page is refreshed as NVD updates the record.