EUVD-2026-63304
GHSA-jrfp-8x5w-2x6h
Severity by source
AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:L
Network-delivered reflected XSS with required victim click (UI:R) and browser scope change (S:C); availability impact assessed as None since XSS does not meaningfully disrupt service.
Primary rating from Vendor (Patchstack).
CVSS VectorVendor: Patchstack
Lifecycle Timeline
2DescriptionCVE.org
Unauthenticated Cross Site Scripting (XSS) in Flatastic <= 2.0 versions.
AnalysisAI
Reflected Cross-Site Scripting in the Flatastic WordPress theme (all versions through 2.0) enables unauthenticated remote attackers to inject and execute arbitrary JavaScript in a victim's browser by delivering a crafted URL. The CVSS Scope:Changed metric confirms the injected script crosses trust boundaries, executing in the victim's browser context with access to session tokens and the ability to perform actions on behalf of authenticated users. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | The target WordPress site must have the Flatastic theme (version <= 2.0) installed and active as the rendered front-end theme - a deactivated or non-default theme does not expose the vulnerable code path. … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | The CVSS 3.1 base score of 7.1 is driven primarily by the network attack vector (AV:N), low complexity (AC:L), no required privileges for the attacker (PR:N), and the Scope:Changed flag. … 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 | Check the Patchstack advisory at https://patchstack.com/database/wordpress/theme/flatastic/vulnerability/wordpress-flatastic-theme-2-0-reflected-cross-site-scripting-xss-vulnerability for the release of a patched version beyond 2.0; no exact fix version is confirmed in the available data, so administrators should monitor the theme's update channel in the WordPress dashboard and apply any available update immediately. … Detailed patch versions, workarounds, and compensating controls in full report. |
Recommended ActionAI
Within 24 hours, audit all WordPress installations to identify if Flatastic theme is deployed and document affected sites. …
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Same weakness CWE-79 – Cross-site Scripting (XSS)
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External POC / Exploit Code
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