CVE-2021-24579
CVSS v3
8.8
HIGH
EPSS Score
8.2 %
exploit probability, as of 2026-09-25
CISA KEV
No
known exploited
Exploitation
—
SSVC status
Description
The bt_bb_get_grid AJAX action of the Bold Page Builder WordPress plugin before 3.1.6 passes user input into the unserialize() function without any validation or sanitisation, which could lead to a PHP Object Injection. Even though the plugin did not contain a suitable gadget to fully exploit the issue, other installed plugins on the blog could allow such issue to be exploited and lead to RCE in some cases.
Technical details
- Published
- 2021-08-30
Frequently asked questions
What is CVE-2021-24579?
The bt_bb_get_grid AJAX action of the Bold Page Builder WordPress plugin before 3.1.6 passes user input into the unserialize() function without any validation or sanitisation, which could lead to a PHP Object Injection. Even though the plugin did not contain a suitable gadget to fully exploit the issue, other installed plugins on the blog could allow such issue to be exploited and lead to RCE in some cases.
Is CVE-2021-24579 actively exploited?
Active exploitation of CVE-2021-24579 has not been confirmed. Its EPSS score was 8.2% on 2026-09-25, the estimated probability of exploitation in the next 30 days.
What is the CVSS score for CVE-2021-24579?
CVE-2021-24579 has a CVSS v3 base score of 8.8 (HIGH severity).
Is CVE-2021-24579 affecting your environment?
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