What’s Vulnerable › Vulnerabilities

CVE-2025-9629: USS Upyun <= 1.5.0 - Cross-Site Request Forgery

• Severity: medium (CVSS 4.3 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: 2025-09-17 · updated 2026-09-26
• Weakness: CWE-352

Description

The USS Upyun plugin for WordPress is vulnerable to Cross-Site Request Forgery in all versions up to, and including, 1.5.0. This is due to missing or incorrect nonce validation on the uss_setting_page function when processing the uss_set form type. This makes it possible for unauthenticated attackers to modify critical Upyun cloud storage settings including bucket name, operator credentials, upload paths, and image processing parameters via a forged request granted they can trick a site administrator into performing an action such as clicking on a link.

Affected products

• shenyanzhi USS Upyun: through 1.5.0

References

• https://plugins.trac.wordpress.org/browser/uss-upyun/tags/1.5.0/upyun-uss-wordpress.php#L493
• https://plugins.trac.wordpress.org/browser/uss-upyun/tags/1.5.0/upyun-uss-wordpress.php#L499
• https://plugins.trac.wordpress.org/browser/uss-upyun/tags/1.5.1/upyun-uss-wordpress.php#L493
• https://www.wordfence.com/threat-intel/vulnerabilities/id/d2cee46a-03d5-4a31-ba15-28be97794199?source=cve

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