EUVD-2026-76214
GHSA-cw9x-3jm8-25rg
Severity by source
AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Unauthenticated and network-reachable, but full impact requires a reachable POP gadget chain, which raises attack complexity to AC:H versus the vendor's AC:L.
Primary rating from Vendor (Patchstack).
CVSS VectorVendor: Patchstack
Lifecycle Timeline
2DescriptionCVE.org
Unauthenticated PHP Object Injection in Everest Forms <= 3.6.0 versions.
AnalysisAI
Unauthenticated PHP Object Injection affects the Everest Forms WordPress plugin (wpeverest) in all versions up to and including 3.6.0, allowing remote attackers to pass attacker-controlled serialized data into a PHP unserialize() call. If a suitable POP (property-oriented programming) gadget chain is present in the plugin, an installed theme, or WordPress core, this can escalate to arbitrary file operations, SQL injection, or remote code execution. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | Remote unauthenticated access to a site running Everest Forms <= 3.6.0 with an input path that reaches unserialize() (CVSS AV:N/AC:L/PR:N/UI:N confirms network, low-complexity, no auth, no user interaction). … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | The CVSS 3.1 vector (AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H, 9.8) reflects a worst-case, network-reachable, no-auth, no-interaction full-impact scenario, which is the standard ceiling Patchstack assigns to unauthenticated object injection. … 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 | Upgrade Everest Forms to a version later than 3.6.0 once the vendor publishes a fixed release; the supplied data does not name an exact patched version, so consult the Patchstack advisory (https://patchstack.com/database/wordpress/plugin/everest-forms/vulnerability/wordpress-everest-forms-plugin-3-6-0-php-object-injection-vulnerability) for the fixed build. … Detailed patch versions, workarounds, and compensating controls in full report. |
Recommended ActionAI
Within 24 hours, audit all WordPress deployments to identify active Everest Forms installations and determine version numbers, prioritizing environments handling customer data. …
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External POC / Exploit Code
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