CVE-2024-21511Network attack vector

Arbitrary code execution via unescaped timezone option

Published Apr 23, 2024 · Updated Aug 1, 2024

Code injection in Sidorares MySQL2 before 3.9.7 allows remote attackers to execute JavaScript through a crafted timezone option. The text and binary readCodeFor paths embed the timezone value in generated JavaScript source without escaping it before compiling result parsers. Exploitation requires an application to pass attacker-controlled timezone configuration into a query or execute call, after which injected code runs in the Node.js process.

CVSS severity9.8
Critical
EPSS probability1.03%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Code injection in Sidorares MySQL2 before 3.9.7 allows remote attackers to execute JavaScript through a crafted timezone option. The text and binary readCodeFor paths embed the timezone value in generated JavaScript source without escaping it before compiling result parsers. Exploitation requires an application to pass attacker-controlled timezone configuration into a query or execute call, after which injected code runs in the Node.js process.

The record

CVE
CVE-2024-21511
Published
Apr 23, 2024
Updated
Aug 1, 2024
Vendor
Sidorares
Product
MySQL2
Classifications
CWE-94, T1059.007
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Apr 23, 2024CVE publishedPublication date reported by the CVE source.
  2. Aug 1, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=0 <3.9.7

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Sidorares · MySQL2version=0 <3.9.7

Published CVSS scores

9.8GitHubCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-94Improper Control of Generation of Code ('Code Injection')
T1059.007JavaScript/JScript

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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