CVE-2020-12851

Name: CVE-2020-12851
Creator: NVD / NIST
Published: 2020-06-04T20:15:11.817+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 8.1/10EPSS 1.45%

Last modified Jun 17, 2026

CVE-2020-12851 is a high-severity vulnerability rated 8.1/10 on the CVSS scale. Pydio Cells 2.0.4 allows an authenticated user to write or overwrite existing files in another user’s personal and cells folders (repositories) by uploading a custom generated ZIP file and leveraging the file extraction feature present in the web application. The extracted files will be placed in the targeted user folders.. EPSS estimates a 1.45% chance of exploitation in the next 30 days.

Description

Pydio Cells 2.0.4 allows an authenticated user to write or overwrite existing files in another user’s personal and cells folders (repositories) by uploading a custom generated ZIP file and leveraging the file extraction feature present in the web application. The extracted files will be placed in the targeted user folders.

Metrics

CVSS 3.1

8.1/10

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N

EPSS Probability

1.45%

70.0th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-22

Affected Software

Vendor	Product	Versions
Pydio	Cells	2.0.4

References

http://packetstormsecurity.com/files/158002/Pydio-Cells-2.0.4-XSS-File-Write-Code-Execution.htmlThird Party Advisory
https://www.coresecurity.com/advisoriesThird Party Advisory
https://www.coresecurity.com/core-labs/advisories/pydio-cells-204-multiple-vulnerabilitiesExploit, Third Party Advisory
http://packetstormsecurity.com/files/158002/Pydio-Cells-2.0.4-XSS-File-Write-Code-Execution.htmlThird Party Advisory
https://www.coresecurity.com/advisoriesThird Party Advisory
https://www.coresecurity.com/core-labs/advisories/pydio-cells-204-multiple-vulnerabilitiesExploit, Third Party Advisory

Timeline

Published: Jun 4, 2020
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2020-12851?

How severe is CVE-2020-12851?

CVE-2020-12851 has a CVSS score of 8.1/10 (HIGH severity). The EPSS model estimates a 1.45% probability of exploitation in the next 30 days.

How do I fix CVE-2020-12851?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2020-12851?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST