CVE-2024-8929: Leak partial content of the heap through heap buffer over-read in mysqlnd

Severity: medium (CVSS 5.8 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 2.2% probability of exploitation in the next 30 days
Public exploit or detection template: yes
Published: 2024-11-22 · updated 2026-06-17
Weakness: CWE-125

Description

In PHP versions 8.1.* before 8.1.31, 8.2.* before 8.2.26, 8.3.* before 8.3.14, a hostile MySQL server can cause the client to disclose the content of its heap containing data from other SQL requests and possible other data belonging to different users of the same server.

Affected products

PHP: from 8.1.0 before 8.1.31; from 8.2.0 before 8.2.26; from 8.3.0 before 8.3.14 — fixed in 8.1.31, 8.2.26, 8.3.14

How to fix

Upgrade to a fixed version: PHP 8.1.31, 8.2.26, 8.3.14. Check the vendor advisory for mitigations.

References

https://github.com/php/php-src/security/advisories/GHSA-h35g-vwh6-m678
https://lists.debian.org/debian-lts-announce/2024/12/msg00007.html
https://security.netapp.com/advisory/ntap-20250110-0008/

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