CVE-2025-9883: Browser Sniff <= 2.3 - Cross-Site Request Forgery to Stored Cross-Site Scripting

Severity: medium (CVSS 6.1 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.2% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2025-09-20 · updated 2026-06-17
Weakness: CWE-352

Description

The Browser Sniff plugin for WordPress is vulnerable to Cross-Site Request Forgery in all versions up to, and including, 2.3. This is due to missing or incorrect nonce validation on a function. This makes it possible for unauthenticated attackers to update settings and inject malicious web scripts via a forged request granted they can trick a site administrator into performing an action such as clicking on a link.

Affected products

bpedrassani Browser Sniff: through 2.3

References

https://plugins.trac.wordpress.org/browser/browser-sniff/tags/2.3/browsersniff.php#L88
https://wordpress.org/plugins/browser-sniff/
https://www.wordfence.com/threat-intel/vulnerabilities/id/b7210fd7-0812-47bc-bc62-d69280253e0a?source=cve

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