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TI-2026-21817 Aliases CVE-2026-27403GHSA-583w-xvr4-75jr

WordPress Hubbub Lite plugin <= 1.36.3 - 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 NerdPress Hubbub Lite allows Stored XSS. This issue affects Hubbub Lite: from n/a through 1.36.3.

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
NerdPressHubbub Liteup to 1.36.3—No fix listedCNA
  • Hubbub Lite VendorNerdPress Affected up to 1.36.3 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-2026-27403
  2. 2026-10-03 Alias added: GHSA-583w-xvr4-75jr

References

Other 1

  • TI-2023-26852 WordPress Grow Social plugin <= 1.30.0 - Broken Access Control vulnerability CVSS 3.1MEDIUM 5.3
  • TI-2024-08540 Smart Custom 404 Error Page <= 11.4.7 - Reflected Cross-Site Scripting CVSS 3.1MEDIUM 6.1
  • TI-2025-35859 WordPress Social Pug Plugin <= 1.35.2 - Sensitive Data Exposure Vulnerability CVSS 3.1MEDIUM 4.3

Sources

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