EUVD-2026-87539
GHSA-m59v-2jwx-hmp2
Severity by source
AV:N/AC:L/PR:H/UI:R/S:U/C:H/I:H/A:H
Author is a low-privilege role (PR:L not PR:H); stored XSS needs an admin to view the post (UI:R) and executes in a separate security context (S:C) with partial confidentiality/integrity and no availability impact.
Primary rating from Vendor (WPScan).
CVSS VectorVendor: WPScan
Lifecycle Timeline
6DescriptionCVE.org
The Optimole WordPress plugin before 4.2.13 does not escape unrecognized attributes of its video-player block before rendering them onto the block's wrapper element, allowing users with the Author role and above to store an event-handler attribute that executes scripts in the browser of any user, such as an administrator, who views the post.
AnalysisAI
Stored cross-site scripting in the Optimole WordPress plugin (versions 4.0.0 through 4.2.12) allows an authenticated user with the WordPress Author role or higher to inject an event-handler attribute into the wrapper element of the plugin's video-player block; because that unrecognized attribute is rendered without escaping, the payload executes in the browser of any higher-privileged user - such as an administrator - who views the crafted post. Publicly available exploit code exists, and the vendor has released Optimole 4.2.13 to fix it. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | Requires an authenticated account with the WordPress Author role or higher on a site running the Optimole plugin (versions 4.0.0 through 4.2.12). … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | This is a genuine but bounded stored-XSS issue, not a top-tier emergency. … 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 | Vendor-released patch: update the Optimole plugin to 4.2.13 or later, which escapes the unrecognized block attributes before they are written to the wrapper element; this is the only complete fix and it is available via the standard WordPress plugin update mechanism. … Detailed patch versions, workarounds, and compensating controls in full report. |
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External POC / Exploit Code
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