EUVD-2026-60791
GHSA-22r5-47c6-39f8
Severity by source
AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Unauthenticated and remote (PR:N/AV:N) per the description, but AC:H because meaningful impact requires a usable POP gadget chain to be present in the runtime; impacts high when a chain exists.
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
Lifecycle Timeline
3DescriptionCVE.org
Unauthenticated PHP Object Injection in Ultimate Maps by Supsystic < 1.5.0 versions.
AnalysisAI
Unauthenticated PHP Object Injection in the Ultimate Maps by Supsystic WordPress plugin (all versions before 1.5.0) lets remote attackers pass attacker-controlled serialized data into a PHP unserialize() call, instantiating arbitrary PHP objects. If a usable POP (property-oriented programming) gadget chain is present in the plugin, WordPress core, or any other active plugin, this can escalate to remote code execution, file operations, or database compromise. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | No authentication and no user interaction are required (PR:N/UI:N), and the attack is remote over the network (AV:N) against Ultimate Maps by Supsystic installations running versions before 1.5.0. … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | The signals available are the CVSS 3.1 vector (AV:N/AC:L/PR:N/UI:N, C:H/I:H/A:H = 9.8) and CWE-502; EPSS, KEV, and POC data are not provided in the input, so no active-exploitation or exploit-probability claim can be made. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in. |
| Exploit Scenario | An unauthenticated attacker sends a crafted HTTP request to a vulnerable Ultimate Maps endpoint containing a serialized PHP object payload. WordPress unserializes it and triggers a gadget chain present in the site's loaded code, causing the server to write a webshell or execute attacker-controlled code, yielding full site compromise. … |
| Remediation | Vendor-released patch: update Ultimate Maps by Supsystic to version 1.5.0 or later, which remediates the deserialization flaw; this is the primary and recommended action. … Detailed patch versions, workarounds, and compensating controls in full report. |
Recommended ActionAI
Within 24 hours, identify all WordPress instances using Ultimate Maps by Supsystic and assess their internet-facing exposure; simultaneously confirm vendor availability of version 1.5.0 release timeline. …
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Same weakness CWE-502 – Deserialization of Untrusted Data
View allSame technique Deserialization
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External POC / Exploit Code
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