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MEDIUM

CVE-2024-21507

CVSS v3

5.3

MEDIUM

EPSS Score

0.7 %

exploit probability, as of 2026-10-19

CISA KEV

No

known exploited

Exploitation

—

SSVC status

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Affected and fixed versions

Packages from OSV.dev and products from the vendors' CSAF advisories.

version not verifiedVersions not verified: read as OSV.dev and the vendors publish them, not checked against each vendor's release list.

Packages

  • mysql2npmall versions · fixed in 3.9.3

Vendor advisories

Full record on NVD

Description

Versions of the package mysql2 before 3.9.3 are vulnerable to Improper Input Validation through the keyFromFields function, resulting in cache poisoning. An attacker can inject a colon (:) character within a value of the attacker-crafted key.

Technical details

Published
2024-04-10

Frequently asked questions

What is CVE-2024-21507?

Versions of the package mysql2 before 3.9.3 are vulnerable to Improper Input Validation through the keyFromFields function, resulting in cache poisoning. An attacker can inject a colon (:) character within a value of the attacker-crafted key.

Is CVE-2024-21507 actively exploited?

Active exploitation of CVE-2024-21507 has not been confirmed. Its EPSS score was 0.7% on 2026-10-19, the estimated probability of exploitation in the next 30 days.

What is the CVSS score for CVE-2024-21507?

CVE-2024-21507 has a CVSS v3 base score of 5.3 (MEDIUM severity).

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