XSS in 10web Booster

CVE-2026-14287

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.

Vulnerability class: XSS (Cross-Site Scripting)

Published · last modified .

CVSS v3 metric

CVSS v3 base score 4.7 (Medium). Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:L/I:L/A:N.

EPSS exploit prediction

EPSS: 0.002 (11.2th percentile), scored .

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 11th percentile — 11.2% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS trend (30 days)EPSS over the last 30 days for CVE-2026-14287: held from 0.002 to 0.002.

EPSS over last 30 days · oldest: 0.002 · newest: 0.002 · change: +0.001

Affected products

  • 10web Booster

Weakness classification (CWE)

References

Frequently asked questions

What is CVE-2026-14287?
CVE-2026-14287 is a medium-severity vulnerability in 10web Booster, classified under Cross-site Scripting. CVSS score: 4.7/10. Published 2026-08-19.
How severe is CVE-2026-14287?
Medium severity. CVSS v3 base score is 4.7 out of 10.