Pimcore admin UI vulnerable to Cross-site Scripting in 2 factor authentication setup page

Exploitation

No confirmed exploitation recorded. Patch Next marks exploitation only from CISA KEV.

CVSS

6.1 · CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

EPSS

• CVE-2023-37280: 0.58% estimated exploitation activity in the next 30 days; percentile 47.63 (FIRST EPSS, 2026-11-03). This is a model estimate, not proof of exploitation or customer exposure.

As published by the source; long descriptions are shortened.

Summary Unauthenticated HTML Injection / XSS Possible. Conditions: 2factor authentication must not set before Vulnerable Endpoint: /admin/login/2fa-setup Vulnerable Param: error= How it works, So basically any admin, who has not setup 2 factor authentication before is vulnerable for this attack, without need for any form of privilege, causing the application to execute arbitrary scripts / HTML Contents. Another potential attack vector, as it's a 2fa page and it has QR Code, attacker can replace this QR Code with something he has, leading to increase threat to the admin. This attack can be used to execute arbitrary scripts or HTML Injection, causing the target application to execute these resulting in cookie steeling, defacement or Injecting phishing URLs on the target application. Patches Update to version 1.0.3 or apply this patches manually https://github.com/pimcore/admin-ui-classic-bundle/commit/5fcd19bdc89a3fe4cb8ad8c356590e1e4740c743.patch Workarounds Apply patches manually:…

Published by the source

12 Jul 2023, 17:29 UTC

Last modified by the source

7 Nov 2023, 05:05 UTC

Source last checked

26 Oct 2026, 14:10 UTC

1. Revision 1 · created · 26 Oct 2026

   Published from ghsa record GHSA-hqv9-6jqw-9g8m

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# Patch Next advisory brief: CVE-2023-37280

Advisory: Pimcore admin UI vulnerable to Cross-site Scripting in 2 factor authentication setup page
IDs: CVE-2023-37280, GHSA-hqv9-6jqw-9g8m
Record: https://patchnext.com/advisories/cve-2023-37280 (revision 1, source checked 26 Oct 2026, 14:10 UTC)
Inventory: none attached. This brief comes from a public page and does not say whether any deployment is affected.
Severity: Medium (CVSS 6.1)
Exploitation: no confirmed exploitation recorded. Patch Next confirms exploitation only from CISA KEV.
Vendor response: Vendor fix available; fixed versions by package: pimcore/admin-ui-classic-bundle 1.0.3. A vendor fix does not mean a deployment is fixed.

## Affected components
- Packagist pimcore/admin-ui-classic-bundle: affected < 1.0.3; fixed in 1.0.3

## Suggested inspection (read-only)
- Packagist pimcore/admin-ui-classic-bundle: check the installed version with your package manager.

## Supported action
Upgrade each affected component to a fixed version on its release line. For a transitive dependency, upgrade the parent package or add an override or constraint, then regenerate the lockfile. Redeploy every environment that ran an affected version.

## Required regression checks
- Run the test suite and a production build.
- Exercise the features that depend on pimcore/admin-ui-classic-bundle.
- Repeat the inspection and confirm that only fixed versions remain installed.

## Rollback considerations
- Keep the previous lockfile and deployment artifact. Rolling back reinstates the vulnerable version, so apply any documented mitigation while you fix forward.

## Unresolved questions
- Which deployments run an affected version?
- Exploitation status can change. Check again before lowering the priority.
- Mark the work resolved only after the fixed version is verified in production.

## Sources
- Verified: https://github.com/advisories/GHSA-hqv9-6jqw-9g8m (GitHub-reviewed advisory GHSA-hqv9-6jqw-9g8m lists affected ranges: Packagist pimcore/admin-ui-classic-bundle >=0 <1.0.3)

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