What’s Vulnerable › Vulnerabilities
CVE-2022-31626: mysqlnd/pdo password buffer overflow
- Severity: high (CVSS 8.8 v3.1)
- Exploited in the wild: not listed in CISA KEV
- EPSS: 58.1% probability of exploitation in the next 30 days
- Public exploit or detection template: yes
- Published: 2022-06-16 · updated 2026-06-17
- Weakness: CWE-120
Description
In PHP versions 7.4.x below 7.4.30, 8.0.x below 8.0.20, and 8.1.x below 8.1.7, when pdo_mysql extension with mysqlnd driver, if the third party is allowed to supply host to connect to and the password for the connection, password of excessive length can trigger a buffer overflow in PHP, which can lead to a remote code execution vulnerability.
Affected products
- Debian Linux: 10.0, 11.0
- PHP: from 7.4.0 before 7.4.30; from 8.0.0 before 8.0.20; from 8.1.0 before 8.1.7 — fixed in 7.4.30, 8.0.20, 8.1.7
How to fix
Upgrade to a fixed version: PHP 7.4.30, 8.0.20, 8.1.7. Check the vendor advisory for mitigations.
References
- https://bugs.php.net/bug.php?id=81719
- https://lists.debian.org/debian-lts-announce/2022/12/msg00030.html
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/3T4MMEEZYYAEHPQMZDFN44PHORJWJFZQ/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ZZTZQKRGEYJT5UB4FGG3MOE72SQUHSL4/
- https://security.gentoo.org/glsa/202209-20
- https://security.netapp.com/advisory/ntap-20220722-0005/
- https://www.debian.org/security/2022/dsa-5179
- https://bugs.php.net/bug.php?id=81719
- https://lists.debian.org/debian-lts-announce/2022/12/msg00030.html
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/3T4MMEEZYYAEHPQMZDFN44PHORJWJFZQ/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ZZTZQKRGEYJT5UB4FGG3MOE72SQUHSL4/
- https://security.gentoo.org/glsa/202209-20
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