CVE-2023-2340Public exploitNetwork attack vector

Account takeover via unencoded grid metadata

Published Apr 27, 2023 · Updated Jan 31, 2025

Stored XSS in Pimcore before 10.5.21 allows remote authenticated users to steal an administrator's session cookie through a saved grid. The grid save controller stores attacker-controlled grid names and descriptions without HTML encoding, and grid rendering inserts the stored values into markup. A backend account is required to save the payload, and a victim must view the affected DataObject grid for browser-side script execution and session theft.

CVSS severity5.4
Medium
EPSS probability0.48%
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 10.5.21 allows remote authenticated users to steal an administrator's session cookie through a saved grid. The grid save controller stores attacker-controlled grid names and descriptions without HTML encoding, and grid rendering inserts the stored values into markup. A backend account is required to save the payload, and a victim must view the affected DataObject grid for browser-side script execution and session theft.

The record

CVE
CVE-2023-2340
Published
Apr 27, 2023
Updated
Jan 31, 2025
Vendor
Pimcore
Product
Pimcore
Classifications
CWE-79, T1059.007
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Apr 27, 2023CVE publishedPublication date reported by the CVE source.
  2. Jan 31, 2025Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

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

  1. Affected versionversion=unspecified <10.5.21

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Pimcore · Pimcoreversion=unspecified <10.5.21

Published CVSS scores

6.1huntr.devCVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
5.4GitHub Advisory DatabaseCVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N
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 exploitPublished

Weakness, pattern, technique

CWE-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
T1059.007Command and Scripting Interpreter: JavaScript

Public exploit references

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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