CVE-2023-3821Network attack vector

Stored script execution via unencoded document titles

Published Jul 21, 2023 · Updated Oct 16, 2024

Stored XSS in Pimcore before 10.6.4 allows remote authenticated users to execute script in another administrator's browser. The document selector renders the stored title field as HTML because its ExtJS grid column lacks an htmlEncode renderer. Exploitation requires a crafted document title and a second authenticated user to display it in document-search results.

CVSS severity5.4
Medium
EPSS probability0.57%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Stored XSS in Pimcore before 10.6.4 allows remote authenticated users to execute script in another administrator's browser. The document selector renders the stored title field as HTML because its ExtJS grid column lacks an htmlEncode renderer. Exploitation requires a crafted document title and a second authenticated user to display it in document-search results.

The record

CVE
CVE-2023-3821
Published
Jul 21, 2023
Updated
Oct 16, 2024
Vendor
Pimcore
Product
Pimcore
Classifications
CWE-79, T1203
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Jul 21, 2023CVE publishedPublication date reported by the CVE source.
  2. Oct 16, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=0 <10.6.4
  2. Affected versionversion=unspecified <10.6.4

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Pimcore · Pimcoreversion=0 <10.6.4; version=unspecified <10.6.4

Published CVSS scores

6.1huntr.devCVSS:3.0/AV:N/AC:L/PR:H/UI:R/S:U/C:N/I:H/A:H
5.4NIST NVDCVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
T1203Exploitation for Client Execution

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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