LWS Optimize < 3.4 - Subscriber+ Cache Deletion
Priority MEDIUM 53CWE-862Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- Low
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Security bypass
- Confidentiality · integrity · availability
- None · None · Low
- Fix status
- Fixed
Attack profile from CVSS 3.1 · CISA ADP. Fix status from CNA. Impact type from CWE-862.
Summary
The LWS Optimize WordPress plugin before 3.4 does not perform a capability check on its cache-clearing actions, allowing any authenticated user, including Subscribers, to flush the site's caches and force repeated cache rebuilds.
Why it matters now
Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.00329 26th percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by the CNA
Fix Fixed LWS Optimize (Unknown): 3.4
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 3.4 | 3.4 | Patch available | CNA |
- LWS Optimize VendorUnknown Affected before 3.4 Fixed in 3.4 Patch available CNA
Remediation
- Fix · CNA LWS Optimize (Unknown) Fixed in 3.4
Timeline
- 2026-10-02 Threatist record created from CVE-2026-16042
- 2026-10-03 Alias added: GHSA-6h82-r4vw-xr2m
References
Sources
- CVE-2026-16042 · CVE Program
- CVE-2026-16042 · NVD
- FIRST EPSS
- GHSA-6h82-r4vw-xr2m · 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