TenWeb Speed Optimizer < 2.33.5 - Unauthenticated Stored XSS via Critical CSS Token Bypass
Priority LOW 21CWE-79Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- Required
- Attack complexity
- High
- 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 10Web Booster WordPress plugin before 2.33.5 does not correctly validate an access token on an unauthenticated request handler and does not escape attacker-supplied stylesheet content before rendering it into the page head, allowing an unauthenticated attacker to store markup that executes as JavaScript in the browser of anonymous visitors to an affected page.
Why it matters now
Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00219 12th percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by the CNA
Fix Fixed 10Web Booster (Unknown): 2.33.5
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- 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 | 10Web Booster | before 2.33.5 | 2.33.5 | Patch available | CNA |
- 10Web Booster VendorUnknown Affected before 2.33.5 Fixed in 2.33.5 Patch available CNA
Remediation
- Fix · CNA 10Web Booster (Unknown) Fixed in 2.33.5
Timeline
- 2026-10-02 Threatist record created from CVE-2026-14287
- 2026-10-03 Alias added: GHSA-8qr6-f92h-v629
References
Sources
- CVE-2026-14287 · CVE Program
- CVE-2026-14287 · NVD
- FIRST EPSS
- GHSA-8qr6-f92h-v629 · 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