CVE-2023-2341Public exploitNetwork attack vector

Browser script execution via unencoded login error

Published Apr 27, 2023 · Updated Jan 31, 2025

Reflected XSS in Pimcore before 10.5.21 allows remote attackers to run script in an administrator's browser via a crafted login request. LoginController.php copies the unauthenticated too_many_attempts query value into the login error parameter without HTML encoding, and the login view renders that value. A victim must open the crafted request; executed script can read session data or modify the displayed page in that victim's Pimcore origin.

CVSS severity6.1
Medium
EPSS probability1.09%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Reflected XSS in Pimcore before 10.5.21 allows remote attackers to run script in an administrator's browser via a crafted login request. LoginController.php copies the unauthenticated too_many_attempts query value into the login error parameter without HTML encoding, and the login view renders that value. A victim must open the crafted request; executed script can read session data or modify the displayed page in that victim's Pimcore origin.

The record

CVE
CVE-2023-2341
Published
Apr 27, 2023
Updated
Jan 31, 2025
Vendor
Pimcore
Product
Pimcore
Classifications
CWE-79, T1204.001
Attack vector
network
Privileges
unauthenticated

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 privilegesunauthenticated

What is affected?

Pimcore · Pimcoreversion=unspecified <10.5.21

Published CVSS scores

7.3huntr.devCVSS:3.0/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:L
6.1NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/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.

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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
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
T1204.001User Execution: Malicious Link

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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