What’s Vulnerable › Vulnerabilities

CVE-2021-34637: Post Index <= 0.7.5 Cross-Site Request Forgery to Stored Cross-Site Scripting

• Severity: high (CVSS 8.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.7% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2021-08-02 · updated 2026-06-17
• Weakness: CWE-352

Description

The Post Index WordPress plugin is vulnerable to Cross-Site Request Forgery via the OptionsPage function found in the ~/php/settings.php file which allows attackers to inject arbitrary web scripts, in versions up to and including 0.7.5.

Affected products

• iTux Post Index: through 0.7.5

References

• https://plugins.trac.wordpress.org/browser/post-index/trunk/php/settings.php#L86
• https://www.wordfence.com/vulnerability-advisories/#CVE-2021-34637
• https://plugins.trac.wordpress.org/browser/post-index/trunk/php/settings.php#L86
• https://www.wordfence.com/vulnerability-advisories/#CVE-2021-34637

Get alerted when CVE-2021-34637 or the next vulnerability affects your stack