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TI-2026-76056 Aliases CVE-2026-110880GHSA-mmhx-mwr8-qg57

Broken access control in Kit (formerly ConvertKit) WordPress plugin

Priority LOW 34CWE-862Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
Low
Impact type
Security bypass
Confidentiality · integrity · availability
Low · Low · None
Fix status
No fix listed

Attack profile from CVSS 3.1 · CNA. Fix status from CNA. Impact type from CWE-862.

Summary

The Kit (formerly ConvertKit) WordPress plugin through 3.4.6 has a missing authorization check (CWE-862) that lets a user reach functionality without the required access rights. A remote attacker with no privileges and no user interaction can affect confidentiality and integrity to a limited degree. The sources do not report known exploitation.

Written with Claude Haiku 5.5 from the sources below · 2026-10-28

Description from the CNA

Missing Authorization vulnerability in Kit Kit (formerly ConvertKit) convertkit allows Exploiting Incorrectly Configured Access Control Security Levels.This issue affects Kit (formerly ConvertKit): from n/a through 3.4.6.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00239 15th 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
Yes
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
KitKit (formerly ConvertKit)up to 3.4.6—No fix listedCNA
  • Kit (formerly ConvertKit) VendorKit Affected up to 3.4.6 Fixed in — No fix listed CNA

Remediation

The sources list no fixed version for Kit (formerly ConvertKit).

Written with Claude Haiku 5.5 from the sources below · 2026-10-28

Timeline

  1. 2026-10-18 Threatist record created from CVE-2026-110880
  2. 2026-10-18 Alias added: GHSA-mmhx-mwr8-qg57
  3. 2026-10-19 Priority changed: MEDIUM → LOW
  4. 2026-10-20 CISA SSVC decision points changed

References

Other 1

  • TI-2026-46642 WordPress Kit (formerly ConvertKit) plugin <= 3.3.5 - Broken Access Control vulnerability CVSS 3.1MEDIUM 5.3
  • TI-2026-82421 Missing authorization in WordPress Kit (formerly ConvertKit) plugin CVSS 3.1MEDIUM 5.3
  • TI-2026-67739 Missing authorization in Kit (formerly ConvertKit) for WooCommerce CVSS 3.1MEDIUM 5.3

Sources

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