Auth bypass in Wpopal Opal Estate
CVE-2021-4388
The Opal Estate plugin for WordPress is vulnerable to featured property modifications in versions up to, and including, 1.6.11. This is due to missing capability checks on the opalestate_set_feature_property() and opalestate_remove_feature_property() functions. This makes it possible for unauthenticated attackers to set and remove featured properties.
Vulnerability class: Broken Access Control
Published · last modified .
CVSS v3 metric
CVSS v3 base score 4.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N.
EPSS exploit prediction
EPSS: 0.007 (52.4th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 52nd percentile — 52.4% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.007 · newest: 0.007 · change: 0.000
Affected products
- Wpopal Opal Estate — versions 0
- Wpopal Opal Estate
Weakness classification (CWE)
Public proof-of-concept exploits
References
- www.wordfence.com/threat-intel/vulnerabilities/id/5ce729a2-a106-45ab-b96c-cfe75… (Third Party Advisory)
- blog.nintechnet.com/multiple-wordpress-plugins-fixed-csrf-vulnerabilities-part-… (Exploit, Third Party Advisory)
- plugins.trac.wordpress.org/browser/opal-estate/trunk/inc/ajax-functions.php (Not Applicable)
Frequently asked questions
- What is CVE-2021-4388?
- CVE-2021-4388 is a medium-severity vulnerability in Wpopal Opal Estate, classified under Missing Authorization. CVSS score: 4.3/10. Published 2023-07-01.
- How severe is CVE-2021-4388?
- Medium severity. CVSS v3 base score is 4.3 out of 10.
- Is CVE-2021-4388 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.