What is CVE-2019-20452?

CVE-2019-20452 is a high-severity vulnerability in Pydio, classified under Deserialization of Untrusted Data. CVSS score: 8.8/10. Published 2020-03-17.

How severe is CVE-2019-20452?

High severity. CVSS v3 base score is 8.8 out of 10.

Deserialization in Pydio

CVE-2019-20452

A problem was found in Pydio Core before 8.2.4 and Pydio Enterprise before 8.2.4. A PHP object injection is present in the page plugins/core.access/src/RecycleBinManager.php. An authenticated user with basic privileges can inject objects and achieve remote code execution.

Vulnerability class: Insecure Deserialization

Published 2020-03-17 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 8.8 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.021 (81.4th percentile), scored 2026-10-08.

Low probability of exploitation in the next 30 days, but still tracked. 81st percentile — 81.4% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.021 · newest: 0.021 · change: 0.000

Affected products

Pydio

Weakness classification (CWE)

CWE-502 — Deserialization of Untrusted Data

References

pydio.com/en/community/releases/pydio-core/pydio-core-pydio-enterprise-824-secu… (Vendor Advisory)
www.certilience.fr/2020/03/cve-2019-20452-vulnerabilite-php-object-injection-py… (Third Party Advisory)

Frequently asked questions

What is CVE-2019-20452?: CVE-2019-20452 is a high-severity vulnerability in Pydio, classified under Deserialization of Untrusted Data. CVSS score: 8.8/10. Published 2020-03-17.
How severe is CVE-2019-20452?: High severity. CVSS v3 base score is 8.8 out of 10.