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Vulnerabilities

Vulnerability · CVE-2025-49912

Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in Nks Email Subscription Popup email-subscribe allows Stored XSS.This issue affe

Published Oct 22, 2025 · catalog updated Apr 28, 2026 · Nks Email Subscription Popup

Last checked Oct 27, 2026. A connected source was read within the last 7 days.

Check if you run it

No confirmed exploitation is on record for CVE-2025-49912. EPSS is 0.29%. Act only if a listed version of Nks Email Subscription Popup is installed.

Gaps on this record

  • No vendor fix or required action is stored. Compare the linked advisory before you change production.
Severity
Medium5.9
Known exploitation
Not in CISA/VulnCheck KEV
EPSS
0.29%
Remediation
Advisory link
Affected products
vendor Nks Email Subscription Popup 0 ≤1.2.26

Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in Nks Email Subscription Popup email-subscribe allows Stored XSS.This issue affects Email Subscription Popup: from n/a through <= 1.2.26.

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 Nks Email Subscription Popup 0 ≤1.2.260 ≤1.2.26

How to fix CVE-2025-49912

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-2025-49912. EPSS is 0.29%. Act only if a listed version of Nks Email Subscription Popup is installed.

Which versions are affected?

Compare what you have installed with Nks Email Subscription Popup 0 ≤1.2.26 0 ≤1.2.26. Compare the installed version with the linked vendor advisory before you change production.

What should an analyst verify?

No weakness class is stored. EPSS 0.29%. 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. Oct 22, 2025 · EUVD

    Detected

    Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in Nks Email Subscription Popup email-subscribe allows Stored XSS.This issue affects Email Subscription Popup: from n/a through <= 1.2.26.

  2. Apr 28, 2026 · EUVD

    Updated

    Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in Nks Email Subscription Popup email-subscribe allows Stored XSS.This issue affects Email Subscription Popup: from n/a through <= 1.2.26.

Sources

  • CVE.orgVulnerability recordCVE-2025-49912

    Official CVE identifier

    cve.org
  • FIRST EPSSExploitation probabilityCVE-2025-49912

    30-day exploitation probability 0.29%

    first.org
  • EUVDVulnerability recordEUVD-2025-35543

    Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in Nks Email Subscription Popup email-subscribe allows Stored XSS.This issue affects Email Subscription Popup: from n/a through <= 1.2.26.

    euvd.enisa.europa.eu

References

Freshness

Last verified in this catalog Oct 27, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.

  • FIRST EPSSOct 27, 2026
  • CVE.orgOct 24, 2026
  • EUVDOct 23, 2026