LWS Optimize < 4.1.2 - Unauthenticated Stored XSS via Real User Monitoring
Priority MEDIUM 60CWE-79Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- 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 LWS Optimize WordPress plugin before 4.1.2 does not properly escape a value submitted through an unauthenticated analytics endpoint before storing it and rendering it in an administrative dashboard, allowing unauthenticated attackers to inject arbitrary web scripts that execute when an administrator views the affected dashboard page.
Why it matters now
Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.00275 20th percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by the CNA
Fix Fixed LWS Optimize (Unknown): 4.1.2
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 | LWS Optimize | before 4.1.2 | 4.1.2 | Patch available | CNA |
- LWS Optimize VendorUnknown Affected before 4.1.2 Fixed in 4.1.2 Patch available CNA
Remediation
- Fix · CNA LWS Optimize (Unknown) Fixed in 4.1.2
Timeline
- 2026-10-02 Threatist record created from CVE-2026-16032
- 2026-10-03 Alias added: GHSA-x8x4-c789-5r5g
References
Sources
- CVE-2026-16032 · CVE Program
- CVE-2026-16032 · NVD
- FIRST EPSS
- GHSA-x8x4-c789-5r5g · GitHub Advisory Database · CC BY 4.0
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