CVE-2021-34637

HIGH 8.8CVE-2021-34637 · Published 02/08/2021 · updated 17/06/2026

In short

CVE-2021-34637 is a HIGH (CVSS 8.8) vulnerability affecting post index (post index project).
Chance of exploitation in the next 30 days (EPSS): 0.70%, higher than 53.4% of all vulnerabilities.
No patched version is listed yet: follow the vendor's advisory in References.

Package	Affected versions	Patched versions
post index post_index_project	`≤ 0.7.5`	No fix yet

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.

References

plugins.trac.wordpress.org/browser/post-index/trunk/php/settings.php · Exploit
wordfence.com/vulnerability-advisories · Third Party Advisory

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