EUVD-2026-92750
GHSA-vfjj-c74x-7r7w
Severity by source
AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Network-reachable plugin endpoint (AV:N), no special conditions (AC:L), but a low-privileged authenticated account is required (PR:L); object injection can yield full C/I/A impact.
Primary rating from Vendor (Patchstack).
CVSS VectorVendor: Patchstack
Lifecycle Timeline
2DescriptionCVE.org
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.
Articles & Coverage 1
AnalysisAI
PHP object injection in the WordPress plugin Simple Event Planner (PressTigers) through version 1.5.7 lets an authenticated low-privileged user pass crafted serialized data to a plugin endpoint that is deserialized without validation, potentially leading to arbitrary object instantiation and, if a usable gadget chain exists in the plugin or surrounding WordPress codebase, to full remote code execution. The flaw is rated CVSS 8.8 (AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H) and requires a valid low-privilege session - it is not exploitable unauthenticated - with no public exploit identified at time of analysis. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | Requires an authenticated session with at least low-privileged access (CVSS PR:L) to the WordPress site running Simple Event Planner version through 1.5.7; the attacker must reach a plugin endpoint that deserializes user-supplied data (CWE-502). … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | Signals are moderately strong but incomplete. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in. |
| Exploit Scenario | Full exploit scenario with step-by-step reproduction available after sign-in. |
| Remediation | No vendor-released patch was identified at time of analysis; the disclosure covers versions through 1.5.7 without naming a fixed release, so administrators should check the plugin's WordPress.org page and the Patchstack record at 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 for a corrected build and upgrade as soon as one appears. … Detailed patch versions, workarounds, and compensating controls in full report. |
Recommended ActionAI
Within 24 hours, verify if your organization uses the Simple Event Planner plugin (PressTigers) version 1.5.7 or earlier; if so, consider temporarily disabling the plugin until a patch is available, especially if your site allows open user registration. …
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Same weakness CWE-502 – Deserialization of Untrusted Data
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External POC / Exploit Code
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