CVE-2026-107742 json
10Web Booster <= 2.34.8 - Unauthenticated Stored Cross-Site Scripting via Comment Author Name
published 30d ago modified 27d ago also EUVD-2026-96210
- cvss
- 7.2
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.2%
- EPSS 0.2% chance of exploitation in 30 days, percentile 15%
- public exploits
- 0
- none known
Summary
The 10Web Booster – Website speed optimization, Cache & Page Speed optimizer plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'author' parameter in all versions up to, and including, 2.34.8 due to insufficient input sanitization and output escaping. This makes it possible for unauthenticated attackers to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page. This is exploitable because a comment author Name value containing ' src=' and an event-handler payload contains no HTML tags or quote characters, allowing it to survive WordPress core's sanitize_text_field and land verbatim inside the alt attribute, where the plugin's own str_replace subsequently injects the single quote that breaks out of the attribute context.
Is CVE-2026-107742 in your stack? Fencer shows which of your repositories are affected as soon as an advisory lands, and opens the fix as a pull request.
Check with FencerCISA SSVC
- Exploitation
- none
- Automatable
- no
- Technical impact
- partial
- Assessed
- 29d ago
Exploit prediction
0.24% chance of exploitation in the next 30 days, higher than 15% of all scored CVEs (FIRST EPSS, 2026-11-09).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 3.1 | 7.2 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N |
Affected products
- 10web 10Web Booster – Website speed optimization, Cache & Page Speed optimizer
Classification
- Weakness
-
- CWE-79 Improper Neutralization of Input During Web Page Generation
- Technology feeds
References
- wordfence.com /threat-intel/vulnerabilities/id/b14945a5-c5e7-45cb-b2cc-8d1a265b6c52?source=cve
- plugins.trac.wordpress.org /browser/tenweb-speed-optimizer/tags/2.34.8/includes/OptimizerImages.php#L445
- plugins.trac.wordpress.org /browser/tenweb-speed-optimizer/tags/2.34.8/includes/OptimizerImages.php#L310
- plugins.trac.wordpress.org /browser/tenweb-speed-optimizer/tags/2.34.8/includes/OptimizerImages.php#L186
- plugins.trac.wordpress.org /browser/tenweb-speed-optimizer/tags/2.34.8/tenweb_speed_optimizer.php#L175
- plugins.trac.wordpress.org /browser/tenweb-speed-optimizer/tags/2.34.10
Sources
- CVE List CVE-2026-107742
- NVD CVE-2026-107742
Fencer Intel keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.