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Fencer Intel
high 8.0

CVE-2021-39166 json

Improper Neutralization of Text-Values in Object Version Preview

published 5y ago modified 4mo ago also GHSA-w6j8-jc36-x5q9 , EUVD-2021-2123

cvss
8.0
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.8%
EPSS 0.8% chance of exploitation in 30 days, percentile 56%
public exploits
0
none known

Summary

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.

Patch / fix

  • packagist pimcore/pimcore 10.1.2
  • pimcore pimcore 10.1.2

Is CVE-2021-39166 in your dependencies? Fencer shows which of your repositories are affected as soon as an advisory lands, and opens the fix as a pull request.

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Exploit prediction

0.78% chance of exploitation in the next 30 days, higher than 56% of all scored CVEs (FIRST EPSS, 2026-11-09).

CVSS scores

assigned by version score vector
CNA 3.1 8.0 CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H
NVD 3.1 5.4 CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N
NVD 2.0 3.5 AV:N/AC:M/Au:S/C:N/I:P/A:N
GitHub 3.1 8.0 CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H

Affected packages

ecosystem package affected fixed in
packagist pimcore/pimcore
<10.1.2
10.1.2

Affected products

  • pimcore pimcore

Classification

Weakness
  • CWE-79 Improper Neutralization of Input During Web Page Generation

References

Sources

Fencer Intel keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.