CVE-2021-39166

Name: CVE-2021-39166
Creator: NVD / NIST
Published: 2021-09-01T14:15:07.947+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 5.4/10EPSS 0.78%

Last modified Jun 17, 2026

CVE-2021-39166 is a medium-severity vulnerability rated 5.4/10 on the CVSS scale. Pimcore is an open source data & experience management platform. Prior to version 10.1.2, text-values were not properly escaped before printed in the version preview. EPSS estimates a 0.78% chance of exploitation in the next 30 days.

Description

Pimcore is an open source data & experience management platform. Prior to version 10.1.2, text-values were not properly escaped before printed in the version preview. This allowed XSS by authenticated users with access to the resources. This issue is patched in Pimcore version 10.1.2.

Metrics

CVSS 3.1

5.4/10

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

EPSS Probability

0.78%

51.3th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-79

Affected Software

Vendor	Product	Versions
Pimcore	Pimcore	< 10.1.2

References

https://github.com/pimcore/pimcore/pull/10170Patch, Third Party Advisory
https://github.com/pimcore/pimcore/security/advisories/GHSA-w6j8-jc36-x5q9Patch, Third Party Advisory
https://github.com/pimcore/pimcore/pull/10170Patch, Third Party Advisory
https://github.com/pimcore/pimcore/security/advisories/GHSA-w6j8-jc36-x5q9Patch, Third Party Advisory

Timeline

Published: Sep 1, 2021
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2021-39166?

How severe is CVE-2021-39166?

CVE-2021-39166 has a CVSS score of 5.4/10 (MEDIUM severity). The EPSS model estimates a 0.78% probability of exploitation in the next 30 days.

How do I fix CVE-2021-39166?

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-2021-39166?

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

Scan your code now

Source: NVD / NIST