Vulnerability · Published Oct 5, 2026 · Assigned by Patchstack
CVE-2026-97257WordPress Simple Event Planner plugin <= 1.5.7 - PHP Object Injection vulnerability
High 8.8
In plain English
A high-severity unsafe deserialization in Simple Event Planner from PressTigers. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.3% (higher than 28% of all known vulnerabilities).
Severity (CVSS 3.1)8.8High
Exploit odds (30 days)0.3%top 71.9% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known
Official 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.
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| PressTigers | Simple Event Planner | 0 – through 1.5.7 |
Weakness: CWE-502 · Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H