CVE-2023-42817Network attack vector

Stored XSS via recursive translation formatting

Published Sep 25, 2023 · Updated Sep 24, 2024

Stored XSS in Pimcore Admin UI Classic Bundle before 1.1.2 allows remote authenticated users to execute script through translations. The client-side sprintf implementation repeatedly interprets percent sequences introduced by prior substitutions instead of preserving substituted translation text literally. Translation permission is sufficient to store the input, but another user must open the affected dialog; script then runs in that user's browser session.

CVSS severity5.4
Medium
EPSS probability0.33%
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 Admin UI Classic Bundle before 1.1.2 allows remote authenticated users to execute script through translations. The client-side sprintf implementation repeatedly interprets percent sequences introduced by prior substitutions instead of preserving substituted translation text literally. Translation permission is sufficient to store the input, but another user must open the affected dialog; script then runs in that user's browser session.

The record

CVE
CVE-2023-42817
Published
Sep 25, 2023
Updated
Sep 24, 2024
Vendor
Pimcore
Product
Admin UI Classic Bundle
Classifications
CWE-79, T1203
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Sep 25, 2023CVE publishedPublication date reported by the CVE source.
  2. Sep 24, 2024Record 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=< 1.1.2

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Pimcore · Admin UI Classic Bundleversion=< 1.1.2

Published CVSS scores

5.4NIST NVDCVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N
5.4GitHub, Inc.CVSS: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.

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Technologies

Your stack

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Your stack

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