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Medium

XSS in various backend modules due to (un)escaping in JS notification module

  • Disclosed: 25.05.2022
  • Updated: 11.10.2026 10:22

The notification module displaying flash messages unscapes HTML coming from the server, resulting in XSS vulnerabilities with various names and labels of entities (eg. workspace title or media title). This however means you must be a logged in user with respective rights in the first place to leverage the attack vector.

Affected software

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PlatformPackageVulnerable versionsFixed in
Composer package neos/neos >= 3.3, < 5.3.10, >= 7.0.0, < 7.0.9, >= 7.1.0, < 7.1.7, >= 7.2.0, < 7.2.6, >= 7.3.0, < 7.3.4, >= 8.0.0, < 8.0.2 5.3.10, 7.0.9, 7.1.7, 7.2.6, 7.3.4, 8.0.2

References

CVSS score -
Weakness (CWE)
CWE-79
Platform
Composer
Package
neos/neos
Disclosed
25.05.2022
Updated
11.10.2026 10:22

Sources and licenses

OSV / GitHub Advisory Database - GHSA-jfxf-4frr-9j3q - CC BY 4.0

Vulnerability history: neos/neos

All published vulnerabilities of this package (Composer package), newest first. Shows whether this is a one-off slip or a package that needs watching.

Total entries
5
First → latest
05.2022 05.2024
Without a fix
0
Exploited in attacks
0

Severity breakdown

  • High 2
  • Medium 3

Disclosures per year

  1. Cross-site Scripting vulnerabilities in Neos
    High ghsa-6cj3-rc4p-f38f >= 1.2.0, < 1.2.13, >= 2.0.0, < 2.0.4 1.2.13, 2.0.4
  2. Privilege Escalation in TYPO3 Neos
    Medium · 4.2 ghsa-43cf-7f3h-38rg >= 1.1.0, < 1.1.3, >= 1.2.0, < 1.2.3 1.1.3, 1.2.3
  3. Neos Information Disclosure Security Note
    High · 7.5 ghsa-3c5g-73f7-grvm >= 2.3.0, < 3.0.20, >= 3.1.0, < 3.1.18, >= 3.2.0, < 3.2.14, >= 3.3.0, < 3.3.23, >= 4.0.0, < 4.0.17, >= 4.1.0, < 4.1.16, >= 4.2.0, < 4.2.12, >= 4.3.0, < 4.3.3 3.0.20, 3.1.18, 3.2.14, 3.3.23, 4.0.17, 4.1.16, 4.2.12, 4.3.3
  4. Neos CMS vulnerable to XSS in various backend modules
    Medium · 5.4 CVE-2022-30429 >= 3.3.0, < 4.4.0, >= 5.3.0, < 5.3.10, >= 7.0.0, < 7.0.9, >= 7.1.0, < 7.1.7, >= 7.2.0, < 7.2.6, >= 7.3.0, < 7.3.4, >= 8.0.0, < 8.0.2 4.4.0, 5.3.10, 7.0.9, 7.1.7, 7.2.6, 7.3.4, 8.0.2
  5. XSS in various backend modules due to (un)escaping in JS notification module this entry
    Medium ghsa-jfxf-4frr-9j3q >= 3.3, < 5.3.10, >= 7.0.0, < 7.0.9, >= 7.1.0, < 7.1.7, >= 7.2.0, < 7.2.6, >= 7.3.0, < 7.3.4, >= 8.0.0, < 8.0.2 5.3.10, 7.0.9, 7.1.7, 7.2.6, 7.3.4, 8.0.2

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