EUVD-2026-39739
GHSA-gj3v-p5q9-mjxv
Severity by source
AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:L
Author role required (PR:L), victim must view the page (UI:R), scope changed to other users' sessions; availability impact (A:N) is not substantiated by stored XSS mechanics.
Primary rating from Vendor (patchstack).
CVSS VectorVendor: patchstack
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:L
Lifecycle Timeline
1DescriptionCVE.org
Author Cross Site Scripting (XSS) in Featured Image <= 2.1 versions.
AnalysisAI
Stored Cross-Site Scripting in the Featured Image WordPress plugin (≤ 2.1) allows an authenticated Author-level user to inject malicious JavaScript via featured image metadata, which then executes in the browsers of other users - including administrators - who view the affected content. The Scope:Changed CVSS metric confirms the payload escapes the author's own session and can compromise higher-privileged accounts, making privilege escalation the primary real-world risk. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | Exploitation requires a WordPress user account with at minimum the Author role - the vulnerability title explicitly names 'Author' as the capable privilege level. … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | The CVSS 6.5 Medium score accurately reflects the constrained but realistic threat: network-accessible (AV:N), low complexity (AC:L), but gated behind Author-level authentication (PR:L) and requiring a victim to load the poisoned page (UI:R). … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in. |
| Exploit Scenario | An attacker with a compromised or self-registered WordPress Author account crafts a malicious JavaScript payload - such as a cookie-stealing script - and injects it into the featured image field of a new or existing post. When a site administrator opens the post editor or preview for that content, the payload executes silently in the admin's browser session, exfiltrating the admin's authentication cookie to an attacker-controlled server and enabling full administrative takeover. … |
| Remediation | The primary fix is to update the Featured Image plugin beyond version 2.1; however, the exact patched version number is not confirmed in the available intelligence data - only the affected ceiling (≤ 2.1) is stated. … Detailed patch versions, workarounds, and compensating controls in full report. |
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Same weakness CWE-79 – Cross-site Scripting (XSS)
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External POC / Exploit Code
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