CVE-2024-12139: Error handling insufficient input validation in URL parameters

CVE-2024-12139 · Severity: medium · CVSS 4.3 · Published 2026-11-02

An application's error message handling fails to properly sanitize user-supplied URL parameters, allowing attackers to inject malicious content into error messages. Attackers can exploit this to display phishing messages or fake credential prompts that trick users into revealing sensitive information or taking harmful actions.

Technologies: <UNKNOWN>.

Quick answers

Is CVE-2024-12139 exploited in the wild?
No. Junglewise Threat Intelligence has no report of CVE-2024-12139 being exploited in the wild.
How severe is CVE-2024-12139?
Medium severity, with a CVSS score of 4.3, published 2 November 2026.
Which products and versions are affected?
<UNKNOWN>.
Is there a fix for CVE-2024-12139?
No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.
How is CVE-2024-12139 attacked?
It is attacked over the network, in a web application.
Am I affected by CVE-2024-12139?
Check whether you run <UNKNOWN>. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

Technical details

The vulnerability is an insufficient input validation flaw in error handling logic that processes URL parameters. An attacker can inject arbitrary content into error messages displayed to end users without authentication or network-level attack constraints. This enables social engineering attacks by substituting legitimate error text with phishing or credential-harvesting content.

Affected products

  • <UNKNOWN>

Timeline

  • 2026-11-02: disclosed

References

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