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TI-2026-47307 Aliases CVE-2026-66636GHSA-hxx2-grcw-j9mq

WordPress Wise Chat plugin <= 3.4.3 - Cross Site Scripting (XSS) vulnerability

Priority LOW 28CWE-79Published · Updated

Key facts

Attack vector
Network
Privileges required
Low
User interaction
Required
Attack complexity
Low
Impact type
Cross-site scripting
Confidentiality · integrity · availability
Low · Low · Low
Fix status
No fix listed

Attack profile from CVSS 3.1 · CNA. Fix status from CNA. Impact type from CWE-79.

Summary

Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in Marcin Wise Chat wise-chat allows Stored XSS.This issue affects Wise Chat: from n/a through 3.4.3.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00224 13th percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
No
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
MarcinWise Chatup to 3.4.3—No fix listedCNA
  • Wise Chat VendorMarcin Affected up to 3.4.3 Fixed in — No fix listed CNA

Remediation

No fixed version listed by the sources yet.

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-66636
  2. 2026-10-03 Alias added: GHSA-hxx2-grcw-j9mq
  3. 2026-10-06 Title updated · CNA
  4. 2026-10-06 Affected versions changed · CNA
  5. 2026-10-07 Title updated · CNA
  6. 2026-10-07 Affected versions changed · CNA

References

Other 1

  • TI-2026-56420 WordPress Wise Chat plugin <= 3.4.2 - PHP Object Injection vulnerability CVSS 3.1HIGH 8.1
  • TI-2026-67942 Missing authorization in WordPress Wise Chat plugin CVSS 3.1HIGH 7.1

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences