CVE-2019-6726 — The WP Fastest Cache plugin through 0

The WP Fastest Cache plugin through 0.8.9.0 for WordPress allows remote attackers to delete arbitrary files because wp_postratings_clear_fastest_cache and rm_folder_recursively in wpFastestCache.php mishandle ../ in an HTTP Referer header.

01What is this vulnerability?

The WP Fastest Cache plugin through 0.8.9.0 for WordPress allows remote attackers to delete arbitrary files because wp_postratings_clear_fastest_cache and rm_folder_recursively in wpFastestCache.php mishandle ../ in an HTTP Referer header.

02Affected products

Vendor	Product	Versions
n	a / n/a	n/a

03Active exploitation status

Not currently listed on the CISA Known Exploited Vulnerabilities (KEV) catalog. EPSS is the best forward-looking signal — see the EPSS row above.

04Recommended remediation

• Patch to a fixed version listed in the vendor advisory (see references below).
• Mitigate with WAF rules, network egress filters, or feature flags where the patch is not yet available.
• Hunt historical logs for exploitation indicators — see Detection signatures below.

05Technical details

For the full vendor write-up, exploit chains, and reference implementations, see the references list in section 09.

06Detection signatures

Ask SARA in chat to draft a starting detection for this CVE in your stack of choice.

07Related CVEs

No directly-cited follow-up CVEs in the KB record for this advisory. The references list in section 09 carries the vendor cross-references.

08Timeline

• Published: 2019-07-29T15:20:10.000Z
• Last modified: 2024-08-04T20:31:04.219Z

09References

• wordpress.org — https://wordpress.org/plugins/wp-fastest-cache/#developers
• wordpress.org — https://wordpress.org/plugins/wp-fastest-cache/
• www.wpfastestcache.com — https://www.wpfastestcache.com/
• plugins.trac.wordpress.org — https://plugins.trac.wordpress.org/browser/wp-fastest-cache/trunk/wpFastestCache…
• packetstormsecurity.com — https://packetstormsecurity.com/files/152042