CVE-2024-21509

Name: CVE-2024-21509
Creator: NVD / NIST
Published: 2024-04-10T05:15:48.547+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 6.5/10EPSS 0.96%

Last modified Jun 17, 2026

CVE-2024-21509 is a medium-severity vulnerability rated 6.5/10 on the CVSS scale. Versions of the package mysql2 before 3.9.4 are vulnerable to Prototype Poisoning due to insecure results object creation and improper user input sanitization passed through parserFn in text_parser.js and binary_parser.js.. EPSS estimates a 0.96% chance of exploitation in the next 30 days.

Description

Versions of the package mysql2 before 3.9.4 are vulnerable to Prototype Poisoning due to insecure results object creation and improper user input sanitization passed through parserFn in text_parser.js and binary_parser.js.

Metrics

CVSS 3.1

6.5/10

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

EPSS Probability

0.96%

57.1th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

Vendor	Product	Versions
Sidorares	Mysql2	< 3.9.4

References

https://blog.slonser.info/posts/mysql2-attacker-configuration/Exploit, Permissions Required
https://github.com/sidorares/node-mysql2/blob/fd3d117da82cc5c5fa5a3701d7b33ca77691bc61/lib/parsers/text_parser.js%23L134Broken Link
https://github.com/sidorares/node-mysql2/commit/4a964a3910a4b8de008696c554ab1b492e9b4691Patch
https://github.com/sidorares/node-mysql2/pull/2574Exploit, Issue Tracking
https://github.com/sidorares/node-mysql2/releases/tag/v3.9.4Release Notes
https://security.snyk.io/vuln/SNYK-JS-MYSQL2-6591084Exploit, Third Party Advisory
https://blog.slonser.info/posts/mysql2-attacker-configuration/Exploit, Permissions Required
https://github.com/sidorares/node-mysql2/blob/fd3d117da82cc5c5fa5a3701d7b33ca77691bc61/lib/parsers/text_parser.js%23L134Broken Link
https://github.com/sidorares/node-mysql2/commit/4a964a3910a4b8de008696c554ab1b492e9b4691Patch
https://github.com/sidorares/node-mysql2/pull/2574Exploit, Issue Tracking
https://github.com/sidorares/node-mysql2/releases/tag/v3.9.4Release Notes
https://security.snyk.io/vuln/SNYK-JS-MYSQL2-6591084Exploit, Third Party Advisory

Timeline

Published: Apr 10, 2024
Last Modified: Jun 17, 2026
Status: Analyzed

Frequently Asked Questions

What is CVE-2024-21509?

How severe is CVE-2024-21509?

CVE-2024-21509 has a CVSS score of 6.5/10 (MEDIUM severity). The EPSS model estimates a 0.96% probability of exploitation in the next 30 days.

How do I fix CVE-2024-21509?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2024-21509?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST