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WP Project Manager EUVDEUVD-2026-65169

| CVE-2026-78262 CRITICAL
Deserialization of Untrusted Data (CWE-502)
2026-08-24 Patchstack GHSA-xgwv-wp33-rjpx
9.8
CVSS 3.1 · Vendor: Patchstack
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Severity by source

Vendor (Patchstack) PRIMARY
9.8 CRITICAL
AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
vuln.today AI
9.8 CRITICAL

Unauthenticated network-reachable deserialization (PR:N/AV:N/AC:L/UI:N); object injection with a viable gadget chain can compromise confidentiality, integrity, and availability, so C/I/A:H.

3.1 AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
4.0 AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

Primary rating from Vendor (Patchstack).

CVSS VectorVendor: Patchstack

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High

Lifecycle Timeline

2
Analysis Generated
Aug 24, 2026 - 22:24 vuln.today
CVE Published
Aug 24, 2026 - 21:31 cve.org
CRITICAL 9.8

DescriptionCVE.org

Unauthenticated PHP Object Injection in WP Project Manager <= 4.0.6 versions.

AnalysisAI

Insecure deserialization in weDevs WP Project Manager (WordPress plugin) versions up to and including 4.0.6 allows remote unauthenticated attackers to inject crafted PHP objects (CWE-502) into the application. With CVSS:3.1 base score 9.8 (AV:N/AC:L/PR:N/UI:N) and full confidentiality, integrity, and availability impact, successful exploitation can lead to arbitrary object instantiation and, given a suitable POP gadget chain in the plugin or WordPress core, remote code execution or data compromise. …

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Attack ChainAIDerived

Hypothetical attack flow derived from CVE metadata

Access
Identify site running WP Project Manager <=4.0.6
Delivery
Send HTTP request with serialized PHP object
Exploit
Trigger unserialize() object injection
Execution
Invoke magic method gadget chain
Impact
Achieve code execution or data compromise

Vulnerability AssessmentAI

Exploitation The affected weDevs WP Project Manager plugin (version <= 4.0.6) must be installed and active on the target WordPress site, and the vulnerable deserialization endpoint must be network-reachable. … Additional conditions and limiting factors are described in the full assessment.
Risk Assessment The signals here are strong but partially unverified. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in.
Exploit Scenario An attacker sends a crafted HTTP request to a public WordPress site running WP Project Manager <= 4.0.6, embedding a serialized PHP object in a parameter that the plugin passes to unserialize(). When deserialized, the forged object triggers a magic method that drives an available gadget chain, potentially leading to file manipulation, data disclosure, or code execution. …
Remediation Update WP Project Manager to a release newer than 4.0.6 as soon as one is confirmed by weDevs; the input data specifies affected versions as <= 4.0.6 but does not include an exact fixed version, so no vendor-released patch version is independently confirmed at time of analysis - verify the fixed version against the vendor changelog and the Patchstack advisory (https://patchstack.com/database/wordpress/plugin/wedevs-project-manager/vulnerability/wordpress-wp-project-manager-plugin-4-0-6-php-object-injection-vulnerability?_s_id=cve). … Detailed patch versions, workarounds, and compensating controls in full report.

Recommended ActionAI

Within 24 hours: Immediately disable and remove weDevs WP Project Manager plugin from all WordPress installations; document any exported data and workflows for migration planning. …

Sign in for detailed remediation steps and compensating controls.

Threat intelligence, references, and detailed analysis are available after sign-in.

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EUVD-2026-65169 vulnerability details – vuln.today

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