CVE-2026-97257

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

Published Oct 5, 2026 CVSS 3.1 · 8.8 High EPSS < 1% KEV · Not listed
Description
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.

Remediation

Vendor Solution

Update the WordPress Simple Event Planner plugin to the latest available version (at least 1.5.8).

Tracking

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Advisories

No advisories available
History
Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}

Type Values Removed Values Added
Description 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.
Title WordPress Simple Event Planner plugin <= 1.5.7 - PHP Object Injection vulnerability
Weaknesses CWE-502
References
Metrics cvssV3_1

{'score': 8.8, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H'}

Subscriptions

No data.

Weaknesses

Sources

Status
PUBLISHED
Assigner
Patchstack
Published
Updated
Oct 6, 2026, 10:41 AM
Reserved
Sep 24, 2026, 10:23 AM
Status
Deferred
Published
Oct 5, 2026, 8:17 PM
Modified
Oct 6, 2026, 3:04 PM