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Vex EUVD-2026-15684

| CVE-2026-25360 HIGH
Deserialization of Untrusted Data (CWE-502)
2026-03-25 Patchstack
8.8
CVSS 3.1 · NVD
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Severity by source

NVD PRIMARY
8.8 HIGH
AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Primary rating from NVD · only source for this CVE.

CVSS VectorNVD

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

Lifecycle Timeline

7
Re-analysis Queued
Apr 24, 2026 - 16:37 vuln.today
cvss_changed
Analysis Updated
Apr 16, 2026 - 06:15 EUVD-patch-fix
executive_summary
Re-analysis Queued
Apr 16, 2026 - 05:29 backfill_euvd_patch
patch_released
Patch available
Apr 16, 2026 - 05:29 EUVD
1.2.9
EUVD ID Assigned
Mar 25, 2026 - 16:47 euvd
EUVD-2026-15684
Analysis Generated
Mar 25, 2026 - 16:47 vuln.today
CVE Published
Mar 25, 2026 - 16:14 nvd
HIGH 8.8

DescriptionCVE.org

Deserialization of Untrusted Data vulnerability in rascals Vex vex allows Object Injection.This issue affects Vex: from n/a through < 1.2.9.

AnalysisAI

A deserialization of untrusted data vulnerability exists in the Rascals Vex theme (CWE-502) that allows attackers to perform PHP object injection attacks. The vulnerability affects Vex versions prior to 1.2.9, as confirmed by Patchstack reporting and ENISA EUVD-2026-15684. …

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Attack ChainAIDerived

Hypothetical attack flow derived from CVE metadata

Access
Authenticated user sends malicious serialized object
Exploit
Vex deserializes untrusted data
Execution
Object injection occurs
Impact
Arbitrary code execution with high impact

Vulnerability AssessmentAI

Exploitation Authenticated user access required to rascals Vex versions before 1.2.9. … Additional conditions and limiting factors are described in the full assessment.
Risk Assessment While CVSS score and vector data are unavailable from the intelligence sources, the vulnerability warrants serious consideration based on multiple corroborating signals. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in.
Exploit Scenario An attacker identifies a WordPress site running Vex theme version 1.2.8 or earlier and locates an entry point where user input is processed without proper deserialization safeguards—such as a custom form handler or AJAX endpoint. The attacker crafts a malicious serialized PHP object leveraging gadget chains available in the WordPress ecosystem (via popular plugins or the theme itself) and sends it via POST request or stores it in the database. …
Remediation Immediately upgrade the Rascals Vex theme to version 1.2.9 or later. … Detailed patch versions, workarounds, and compensating controls in full report.

Recommended ActionAI

Within 24 hours: Identify all WordPress instances running Rascals Vex theme and document current versions via admin dashboard or WP-CLI. …

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EUVD-2026-15684 vulnerability details – vuln.today

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