EUVD-2026-89944
GHSA-q72m-78gg-x9hj
Severity by source
AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:L
Unauthenticated network-reachable reflected XSS requiring victim interaction (UI:R), executing in a separate browser security context (S:C) with limited confidentiality/integrity/availability impact.
Primary rating from Vendor (Patchstack).
CVSS VectorVendor: Patchstack
Lifecycle Timeline
3DescriptionCVE.org
Unauthenticated Cross Site Scripting (XSS) in Ultimate Maps by Supsystic <= 1.5.5 versions.
AnalysisAI
Reflected cross-site scripting in the Ultimate Maps by Supsystic WordPress plugin (all versions through 1.5.5) lets remote, unauthenticated attackers execute arbitrary JavaScript in the browser of any user who is socially engineered into clicking an attacker-crafted link. The flaw is an output-encoding failure of class CWE-79 rated CVSS 7.1 (AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:L); the attacker needs no credentials, but a victim with an active session on an affected site must be lured to the malicious page, and the resulting script runs in that site's origin. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | Exploitation requires that a victim with an active session on a site running Ultimate Maps by Supsystic <= 1.5.5 be socially engineered into clicking an attacker-crafted link or visiting a malicious page (UI:R is the primary limiting factor). … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | This is a classic high-CVSS-but-moderate-real-risk WordPress plugin vulnerability. … 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 | No vendor-released patch version is identified in the provided data, so the first step is to check the Patchstack advisory (https://patchstack.com/database/wordpress/plugin/ultimate-maps-by-supsystic/vulnerability/wordpress-ultimate-maps-by-supsystic-plugin-1-5-5-cross-site-scripting-xss-vulnerability?_s_id=cve) and the WordPress plugin repository for a release above 1.5.5 and update immediately when one is published; if no update exists, the most reliable mitigation is to deactivate and, if the site can function without it, delete the plugin, accepting the loss of map functionality. … Detailed patch versions, workarounds, and compensating controls in full report. |
Recommended ActionAI
Within 24 hours, inventory every WordPress instance running Ultimate Maps by Supsystic at version 1.5.5 or earlier and confirm whether the plugin is active on any internet-facing property; if it is not business-critical, deactivate and remove it immediately. …
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External POC / Exploit Code
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