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Frontend Admin EUVDEUVD-2026-60923

| CVE-2026-66638 MEDIUM
Cross-site Scripting (XSS) (CWE-79)
2026-08-18 Patchstack GHSA-gxv9-2vc5-hx9v
6.5
CVSS 3.1 · Vendor: Patchstack
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Severity by source

Vendor (Patchstack) PRIMARY
6.5 MEDIUM
AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:L
vuln.today AI
5.4 MEDIUM

Contributor auth required (PR:L) and admin interaction required (UI:R); scope changes to privileged session; no material availability impact attributable to XSS.

3.1 AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N
4.0 AV:N/AC:L/AT:N/PR:L/UI:A/VC:L/VI:L/VA:N/SC:L/SI:L/SA:N

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
Attack Vector
Network
Attack Complexity
Low
Privileges Required
Low
User Interaction
Required
Scope
Changed
Confidentiality
Low
Integrity
Low
Availability
Low

Lifecycle Timeline

1
Analysis Generated
Aug 18, 2026 - 15:43 vuln.today

DescriptionCVE.org

Contributor Cross Site Scripting (XSS) in Frontend Admin by DynamiApps <= 3.29.10 versions.

AnalysisAI

Stored Cross-Site Scripting in the Frontend Admin by DynamiApps WordPress plugin (versions up to and including 3.29.10) enables contributor-level authenticated users to inject persistent malicious scripts through frontend-rendered forms. When a higher-privileged user such as an administrator subsequently views the affected content, the payload executes in their browser session, potentially enabling session hijacking, unauthorized administrative actions, or credential theft. …

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Attack ChainAIDerived

Hypothetical attack flow derived from CVE metadata

Access
Obtain contributor-level WordPress credentials
Delivery
Submit crafted XSS payload via Frontend Admin frontend form
Exploit
Wait for administrator to view poisoned content
Execution
Payload executes in admin browser session
Persist
Exfiltrate session token or issue admin API calls
Impact
Achieve full site administrative control

Vulnerability AssessmentAI

Exploitation Exploitation requires the attacker to hold at minimum a contributor-level WordPress account on the target site - the CVSS PR:L metric confirms that anonymous exploitation is not possible. … Additional conditions and limiting factors are described in the full assessment.
Risk Assessment The CVSS 3.1 base score of 6.5 (Medium) reflects meaningful mitigating factors: PR:L requires at minimum a contributor-level WordPress account, and UI:R requires a privileged user to interact with the poisoned content, reducing the population of exploitable endpoints compared to unauthenticated or zero-click XSS. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in.
Exploit Scenario An attacker who holds or acquires a contributor-level WordPress account on a vulnerable site submits a crafted frontend form entry via the Frontend Admin plugin containing an embedded JavaScript payload - for example, a script tag within a text field that is rendered without encoding. When an administrator later visits the affected post or page in the course of normal site management, the script executes silently in their browser, exfiltrating the session cookie to an attacker-controlled endpoint or issuing authenticated API calls to create a rogue admin account. …
Remediation Update the Frontend Admin by DynamiApps plugin beyond version 3.29.10 via the WordPress dashboard (Plugins > Updates) or by downloading directly from the WordPress plugin repository. … Detailed patch versions, workarounds, and compensating controls in full report.

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EUVD-2026-60923 vulnerability details – vuln.today

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