RT Mega Menu < 1.5.2 - Subscriber+ Stored XSS via Menu Item CSS
Key facts
- Attack vector
- Network
- Privileges required
- Low
- User interaction
- Required
- Attack complexity
- Low
- Impact type
- Cross-site scripting
- Confidentiality · integrity · availability
- Low · Low · None
- Fix status
- Fixed
Attack profile from CVSS 3.1 · CISA ADP. Fix status from CNA. Impact type from CWE-79.
Summary
The RT Mega Menu WordPress plugin before 1.5.2 does not perform a capability check on the AJAX action that saves mega-menu configuration and per-menu-item settings; its only gate is a nonce that any logged-in user can read from a standard admin page. A subscriber-level user can therefore enable the mega menu on a site menu and store a menu-item style value that is rendered, without output escaping, into a style attribute on the public navigation. By breaking out of that attribute the user persists a JavaScript event handler that executes for every visitor who hovers the navigation, including administrators, leading to session/site takeover.
Why it matters now
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- Poc
- Automatable
- No
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| Unknown | RT Mega Menu | before 1.5.2 | 1.5.2 | Patch available | CNA |
- RT Mega Menu VendorUnknown Affected before 1.5.2 Fixed in 1.5.2 Patch available CNA
Remediation
- Fix · CNA RT Mega Menu (Unknown) Fixed in 1.5.2
Timeline
- 2026-10-02 Threatist record created from CVE-2026-15385
- 2026-10-03 Alias added: GHSA-9jvp-fc5f-j7qr
References
Sources
- CVE-2026-15385 · CVE Program
- CVE-2026-15385 · NVD
- FIRST EPSS
- GHSA-9jvp-fc5f-j7qr · GitHub Advisory Database · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences