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PHP CVEs

Vulnerabilities in the PHP language itself, and which PHP versions they affect.

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CVE-2025-1218

MEDIUM 5.9 CVSS 3.1
Published
September 25, 2026
Last modified
October 23, 2026
NVD status
Analyzed
Reported by
security@php.net
Weakness
CWE-122
CVSS vector
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H

Description

The mysqlnd wire protocol parser reads fields out of server packets before checking that the packet still holds enough bytes for them. A malicious or compromised MySQL server can send a truncated packet and make the client read past the end of the packet buffer, which is undefined behaviour and can crash the process.

Affected products and versions

  • PHP — From 8.2.0 (including) to 8.2.34 (excluding)
  • PHP — From 8.3.0 (including) to 8.3.35 (excluding)
  • PHP — From 8.4.0 (including) to 8.4.26 (excluding)
  • PHP — From 8.5.0 (including) to 8.5.11 (excluding)

References

  • github.com https://github.com/php/php-src/security/advisories/GHSA-r6x9-5r99-36j7 Vendor Advisory, Exploit
  • nvd.nist.gov Official NVD record