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Vulnerabilities

Vulnerability · CVE-2025-39423

Cross-Site Request Forgery (CSRF) vulnerability in Jenst Add to Header add-to-header allows Stored XSS.This issue affects Add to Header: from n/a through <= 1.0.

Published Apr 17, 2025 · catalog updated Apr 28, 2026 · Jenst Add to Header

Check if you run it

No confirmed exploitation is on record for CVE-2025-39423. EPSS is 0.15%. Act only if a listed version of Jenst Add to Header is installed.

Gaps on this record

  • No vendor fix or required action is stored. Compare the linked advisory before you change production.
Severity
High7.1
Known exploitation
Not in CISA/VulnCheck KEV
EPSS
0.15%
Remediation
Advisory link
Affected products
vendor Jenst Add to Header 0 ≤1.0

Cross-Site Request Forgery (CSRF) vulnerability in Jenst Add to Header add-to-header allows Stored XSS.This issue affects Add to Header: from n/a through <= 1.0.

Are you affected?

Enter the version you run. The result uses only the ranges stored on this record.

The check returns affected, not affected, or incomplete. It does not guess a version that is missing from the record.

  • vendor Jenst Add to Header 0 ≤1.00 ≤1.0

How to fix CVE-2025-39423

What to do

Three questions, each answered from this record only. Confirm the vendor advisory before you patch.

Should you patch?

No confirmed exploitation is on record for CVE-2025-39423. EPSS is 0.15%. Act only if a listed version of Jenst Add to Header is installed.

Which versions are affected?

Compare what you have installed with Jenst Add to Header 0 ≤1.0 0 ≤1.0. Compare the installed version with the linked vendor advisory before you change production.

What should an analyst verify?

No weakness class is stored. EPSS 0.15%. There is no CISA KEV listing. No Exploit-DB or Metasploit reference is linked. Use the source links for the original advisory.

Code

The project this record applies to. Exploit listings stay in References.

No public source repository is identified for this product.

Timeline

Detection, updates, and resolution for this record.

  1. Apr 17, 2025 · EUVD

    Detected

    Cross-Site Request Forgery (CSRF) vulnerability in Jenst Add to Header add-to-header allows Stored XSS.This issue affects Add to Header: from n/a through <= 1.0.

  2. Apr 28, 2026 · EUVD

    Updated

    Cross-Site Request Forgery (CSRF) vulnerability in Jenst Add to Header add-to-header allows Stored XSS.This issue affects Add to Header: from n/a through <= 1.0.

Sources

  • CVE.orgVulnerability recordCVE-2025-39423

    Official CVE identifier

    cve.org
  • FIRST EPSSExploitation probabilityCVE-2025-39423

    30-day exploitation probability 0.1%

    first.org
  • EUVDVulnerability recordEUVD-2025-11565

    Cross-Site Request Forgery (CSRF) vulnerability in Jenst Add to Header add-to-header allows Stored XSS.This issue affects Add to Header: from n/a through <= 1.0.

    euvd.enisa.europa.eu

References

Freshness

Last verified in this catalog Oct 18, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.