Cross-site Scripting (XSS) - Stored in pimcore/pimcore

published 2021-12-10 4 y ago modified 2026-06-17 4 mo ago also GHSA-8w3x-r6x7-c5r5 , EUVD-2021-2487

cvss: 7.4; version 3.0, CNA
cisa kev: Not listed; not in CISA's catalog
epss: 1.6%; EPSS 1.6% chance of exploitation in 30 days, percentile 76%
public exploits: 0; none known

pimcore is vulnerable to Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

Patch / fix

fixed in 2 links 1

packagist pimcore/pimcore 10.2.6
pimcore pimcore/pimcore 10.2.6

github.com/pimcore/pimcore@3c2a14e commit

Exploit prediction

1.61% chance of exploitation in the next 30 days, higher than 76% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

huntr.dev https://huntr.dev/bounties/dcb37f19-ba53-4498-b953-d21999279266 referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by	version	score	vector
CNA	3.0	7.4	CVSS:3.0/AV:L/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
NVD	3.1	6.1	CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
NVD	2.0	4.3	AV:N/AC:M/Au:N/C:N/I:P/A:N
GitHub	3.1	6.1	CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

Affected packages

ecosystem	package	affected	fixed in
packagist	pimcore/pimcore	<10.2.6	10.2.6

Affected products

pimcore pimcore/pimcore

Classification

Weakness

CWE-79 Improper Neutralization of Input During Web Page Generation

References

github.com /pimcore/pimcore/commit/3c2a14e676a57e5d77a16255965988eef48f9065
web, patch, third-party-advisory
huntr.dev /bounties/dcb37f19-ba53-4498-b953-d21999279266
web, exploit, third-party-advisory
nvd.nist.gov /vuln/detail/CVE-2021-4084
advisory
github.com /pimcore/pimcore
package

Sources

CVE List CVE-2021-4084
GitHub Advisory GHSA-8w3x-r6x7-c5r5
NVD CVE-2021-4084

Fencer Vulns 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.

Summary