EUVD-2026-75957
GHSA-mvvr-5rcc-xqpx
Severity by source
AV:N/AC:L/PR:H/UI:R/S:U/C:H/I:H/A:H
Contributor access is PR:L not PR:H; XSS crosses component boundary to victim browser (S:C); impact is limited to browser-context data (C:L/I:L) with no availability effect.
Primary rating from Vendor (WPScan).
CVSS VectorVendor: WPScan
Lifecycle Timeline
5DescriptionCVE.org
The CoolClock WordPress plugin before 4.3.8 does not properly escape a skin setting before outputting it within an HTML attribute, allowing users with contributor-level access and above to inject arbitrary web scripts that execute when the content is viewed.
AnalysisAI
Stored cross-site scripting in the CoolClock WordPress plugin before 4.3.8 allows contributor-level and higher authenticated users to inject arbitrary JavaScript via an unsanitized skin configuration value, which is rendered unescaped within an HTML attribute and executes in any visitor's browser upon page load. A publicly available proof-of-concept exploit has been published by WPScan. …
Unlock full vulnerability intelligence
- Risk assessment & exploitation conditions
- Attack chain visualization
- Remediation with exact patch versions
- Threat intelligence from 22 sources
- Personal watchlist & email alerts
Free forever · No credit card required
Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | Exploitation requires an authenticated WordPress account with at minimum contributor-level permissions, which is a low-privilege role that allows post creation and editing but not direct publishing. … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | The CVSS 3.1 base score of 6.8 reflects a network-accessible, low-complexity attack requiring high privileges (PR:H) and user interaction (UI:R). … 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 | Update the CoolClock WordPress plugin to version 4.3.8 or later, which introduces proper HTML-attribute escaping for the skin setting. … Detailed patch versions, workarounds, and compensating controls in full report. |
Threat intelligence, references, and detailed analysis are available after sign-in.
Stored cross-site scripting in the CoolClock WordPress plugin (before 4.3.8) allows contributor-level users to inject ar
The CoolClock WordPress plugin before 4.3.5 does not escape some shortcode attributes, allowing users with a role as low
Same weakness CWE-79 – Cross-site Scripting (XSS)
View allShare
External POC / Exploit Code
Leaving vuln.today