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Missing authorization in Modern Events Calendar Lite lets subscribers edit posts

Priority LOW 28CWE-639Published · Updated

Key facts

Attack vector
Network
Privileges required
Low
User interaction
None
Attack complexity
Low
Impact type
Security bypass
Confidentiality · integrity · availability
None · High · None
Fix status
Fixed

Attack profile from CVSS 3.1 · CISA ADP. Fix status from CNA. Impact type from CWE-639.

Summary

The Modern Events Calendar Lite WordPress plugin before 7.36.4 does not check that a user may edit a target post before updating it (CWE-639). An authenticated user with the Subscriber role can change the title, content and excerpt of posts, pages and custom post types created by other users. The references include an exploit link.

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

Description from the CNA

The Modern Events Calendar Lite WordPress plugin before 7.36.4 does not verify that a user is authorized to edit the target post before updating it, allowing authenticated users with the Subscriber role to modify the title, content, and excerpt of arbitrary posts, pages, and custom post types created by other users.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00174 6th percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by the CNA
Fix Fixed Modern Events Calendar Lite (Unknown): 7.36.4

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
UnknownModern Events Calendar Litebefore 7.36.47.36.4Patch availableCNA
  • Modern Events Calendar Lite VendorUnknown Affected before 7.36.4 Fixed in 7.36.4 Patch available CNA

Remediation

Update Modern Events Calendar Lite to version 7.36.4 or later, which fixes the flaw.

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

  • Fix · CNA Modern Events Calendar Lite (Unknown) Fixed in 7.36.4

Timeline

  1. 2026-10-18 Threatist record created from CVE-2026-110070
  2. 2026-10-18 Alias added: GHSA-45vg-m9hg-qm9v

References

Sources