CVE-2026-97257

HIGH 8.8

WordPress Simple Event Planner plugin <= 1.5.7 - PHP Object Injection vulnerability

CVSS Score

8.8

EPSS Score

0.0%

EPSS Percentile

0th

Deserialization of Untrusted Data vulnerability in PressTigers Simple Event Planner simple-event-planner allows Object Injection.This issue affects Simple Event Planner: from n/a through 1.5.7.

CWE	CWE-502
Vendor	presstigers
Product	simple event planner
Published	Oct 5, 2026

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CVSS v3 Breakdown

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Attack Vector

Network

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

Affected Versions

PressTigers / Simple Event Planner

0 ≤ 1.5.7

References

NVD ↗ CVE.org ↗ EPSS Data ↗

patchstack.com: https://patchstack.com/database/wordpress/plugin/simple-event-planner/vulnerability/wordpress-simple-event-planner-plugin-1-5-7-php-object-injection-vulnerability?_s_id=cve

Credits

Ananda Dhakal (Patchstack)