What is CVE-2021-29654?

CVE-2021-29654 is a high-severity vulnerability in Stackpath Ajaxsearchpro, classified under Deserialization of Untrusted Data. CVSS score: 7.2/10. Published 2021-04-14.

How severe is CVE-2021-29654?

High severity. CVSS v3 base score is 7.2 out of 10.

Deserialization in Stackpath Ajaxsearchpro

CVE-2021-29654

AjaxSearchPro before 4.20.8 allows Deserialization of Untrusted Data (in the import database feature of the administration panel), leading to Remote Code execution.

Vulnerability class: Insecure Deserialization

Published 2021-04-14 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 7.2 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.022 (82.0th percentile), scored 2026-10-08.

Low probability of exploitation in the next 30 days, but still tracked. 82nd percentile — 82.0% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.022 · newest: 0.022 · change: 0.000

Affected products

Stackpath Ajaxsearchpro

Weakness classification (CWE)

CWE-502 — Deserialization of Untrusted Data

References

www.synacktiv.com/sites/default/files/2021-04/WP_AjaxSearchPro_Vulnerability.pdf (Exploit, Third Party Advisory)

Frequently asked questions

What is CVE-2021-29654?: CVE-2021-29654 is a high-severity vulnerability in Stackpath Ajaxsearchpro, classified under Deserialization of Untrusted Data. CVSS score: 7.2/10. Published 2021-04-14.
How severe is CVE-2021-29654?: High severity. CVSS v3 base score is 7.2 out of 10.