Unauthenticated PHP Object Injection in The Events Calendar by Modern Tribe
CVE-2026-78265

9.8CRITICAL

Key Information:

Vendor

WordPress
Status
The Events Calendar
Vendor
CVE Published:
24 August 2026

What is CVE-2026-78265?

The Events Calendar plugin versions up to 6.17.2 are susceptible to an unauthenticated PHP Object Injection vulnerability. This flaw allows attackers to exploit the plugin, leading to potential unauthorized access or manipulation of server-side data, significantly impacting site integrity and security. It is critical for users to update to the latest version to mitigate risks associated with this vulnerability.

Affected Version(s)

The Events Calendar <= 6.17.2

References

https://patchstack.com/database/wordpress/plugin/the-even...
vdb-entry

CVSS V3.1

Score:
9.8
Severity:
CRITICAL
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Credit

Udin Chan | Patchstack Bug Bounty Program
.