EUVD-2026-41327
GHSA-rvqh-v4r4-mq95
Severity by source
AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Network-reachable sink exploitable by a low-privilege Contributor (PR:L) with no interaction; object injection plus gadget chain yields high C/I/A, scope unchanged within the app.
Primary rating from Vendor (Patchstack).
CVSS VectorVendor: Patchstack
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Lifecycle Timeline
1DescriptionCVE.org
Contributor PHP Object Injection in ARMember Premium <= 7.0 versions.
AnalysisAI
Authenticated PHP object injection in the ARMember Premium WordPress membership plugin (all versions through 7.0) lets low-privileged Contributor-level users pass attacker-controlled serialized data into a PHP unserialize() sink, potentially chaining with POP gadgets to achieve high-impact compromise. With a CVSS of 8.8 and network vector, a user holding only a Contributor account can reach confidentiality, integrity, and availability impacts. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | Exploitation requires an authenticated WordPress account with at least Contributor privileges (per CVSS PR:L and the 'Contributor' designation in the description), so the attacker must be able to register or otherwise obtain such an account - a realistic condition on multi-author or open-registration sites but a hard limit on single-author/closed installations. … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | The CVSS 3.1 vector (AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H) describes a network-exploitable, low-complexity attack requiring low privileges and no user interaction, yielding high impact across all three pillars - a genuinely serious authenticated flaw. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in. |
| Exploit Scenario | An attacker registers or acquires a Contributor-level account on a WordPress site running ARMember Premium 7.0 or earlier, then submits a request containing a crafted serialized PHP object to the vulnerable input. When the plugin calls unserialize() on that data, a POP gadget chain executes during object handling, allowing the attacker to write files, alter data, or run code in the site context. … |
| Remediation | No vendor-released patch version was identified in the provided data; the primary action is to consult the Patchstack advisory (https://patchstack.com/database/wordpress/plugin/armember/vulnerability/wordpress-armember-premium-plugin-7-0-php-object-injection-vulnerability) and update ARMember Premium to any fixed release the vendor publishes above 7.0 as soon as it is available. … Detailed patch versions, workarounds, and compensating controls in full report. |
Recommended ActionAI
Within 24 hours: Disable ARMember Premium plugin and audit contributor-level account activity for indicators of compromise. …
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Threat intelligence, references, and detailed analysis are available after sign-in.
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External POC / Exploit Code
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