Medium severity · published Jul 27, 2026
CVE-2026-13390
The Events Calendar < 6.16.5.1 - Unauthenticated Event Aggregator Import Status Manipulation
5.3
CVSS
0.3%
EPSS
No
On KEV
Description
The Events Calendar WordPress plugin before 6.16.5.1 does not perform an authorization check on one of its Event Aggregator import REST API routes and skips an integrity check for a particular status value, allowing unauthenticated attackers to mark existing import records as failed and to store arbitrary content in a hidden comment record.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
None
Integrity
Low
Availability
None
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.3% · higher than 23% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
TE
The Events Calendar ·
before 6.16.5.1 · source: vendor
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-13390
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-13390
wpscan.com
https://wpscan.com/vulnerability/c7d3b1c5-3b3a-4359-aa41-0dfccb091fa4/
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CVE-2026-84740
The Events Calendar 6.12.0 - 6.17.5 - Unauthenticated Arbitrary Shortcode Execution via 'view_data' Parameter
6.5
CVE-2024-1295
The Events Calendar (Free < 6.4.0.1, Pro < 6.4.0.1) - Contributor+ Arbitrary Events Access
5.3
CVE-2026-84741
The Events Calendar 4.5 - 6.17.4.1 - Unauthenticated Non-Public Venue and Organizer Disclosure via REST API