EUVD-2026-66945
GHSA-vrvm-8j23-25p4
Severity by source
AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:L
Network-accessible unauthenticated XSS; scope changes to victim browser; availability impact not established from description alone.
Primary rating from Vendor (Patchstack).
CVSS VectorVendor: Patchstack
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:L
Lifecycle Timeline
2DescriptionCVE.org
Unauthenticated Cross Site Scripting (XSS) in CozyStay <= 1.10.0 versions.
AnalysisAI
Unauthenticated Cross-Site Scripting in the CozyStay WordPress theme (versions 1.10.0 and earlier) by Loftocean allows a remote, unauthenticated attacker to inject arbitrary JavaScript into pages viewed by victims, crossing the security boundary into the victim's browser (S:C per CVSS vector). Exploitation requires social engineering a target into visiting a crafted URL, making phishing a prerequisite step. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | The target WordPress site must have the CozyStay theme (by Loftocean) installed and active in a version at or below 1.10.0. … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | The CVSS 7.1 Medium-High score reflects meaningful risk driven primarily by the unauthenticated access vector (PR:N, AV:N, AC:L) and scope change (S:C). … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in. |
| Exploit Scenario | An attacker identifies a WordPress site running CozyStay 1.10.0 or earlier, constructs a URL containing a JavaScript payload embedded in a vulnerable theme parameter, and delivers it to a site administrator via a phishing email. When the administrator clicks the link while logged into WordPress, the injected script executes in their browser session, exfiltrating their authentication cookie or silently creating a rogue admin account. … |
| Remediation | Update the CozyStay theme to a version newer than 1.10.0 as referenced in the Patchstack advisory at https://patchstack.com/database/wordpress/theme/cozystay/vulnerability/wordpress-cozystay-theme-1-10-0-cross-site-scripting-xss-vulnerability. … Detailed patch versions, workarounds, and compensating controls in full report. |
Recommended ActionAI
Within 24 hours, inventory all WordPress deployments using CozyStay theme version 1.10.0 or earlier and immediately disable or replace the theme with a supported alternative; deploy Web Application Firewall (WAF) rules to block malicious script injection patterns. …
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Same weakness CWE-79 – Cross-site Scripting (XSS)
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External POC / Exploit Code
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