CVE-2023-37611 json
Neos CMS Cross Site Scripting vulnerability
published 2023-09-18 3 y ago modified 2026-06-17 4 mo ago also BIT-neos-2023-37611 , EUVD-2023-2448 , GHSA-6qjf-7g3j-qx25
- cvss
- 5.4
- version 3.1, NVD
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.7%
- EPSS 0.7% chance of exploitation in 30 days, percentile 53%
- public exploits
- 0
- none known
Summary
Cross Site Scripting (XSS) vulnerability in Neos CMS 8.3.3 allows a remote authenticated attacker to execute arbitrary code via a crafted SVG file to the neos/management/media component.
Patch / fix
- packagist neos/media-browser 7.3.19, 8.0.16, 8.1.11, 8.2.11, 8.3.9
Exploit prediction
0.71% chance of exploitation in the next 30 days, higher than 53% of all scored CVEs (FIRST EPSS, 2026-11-08).
Exploits and checks
- rodelllemit.medium.com https://rodelllemit.medium.com/stored-xss-in-neo-cms-8-3-3-9bd1cb973c5b referenced PoC, tagged "exploit" by a source, unverified
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| GitHub | 3.1 | 5.4 | CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N |
| NVD | 3.1 | 5.4 | CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N |
| OSV | 3.1 | 5.4 | CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N |
Affected packages
| ecosystem | package | affected | fixed in |
|---|---|---|---|
| packagist | neos/media-browser | <7.3.19 >=8.0.0, <8.0.16 >=8.1.0, <8.1.11 >=8.2.0, <8.2.11 >=8.3.0, <8.3.9 |
7.3.19 8.0.16 8.1.11 8.2.11 8.3.9 |
| bitnami | neos | >=8.3.3, <=8.3.3 |
no fix listed |
Classification
- Weakness
-
- CWE-79 Improper Neutralization of Input During Web Page Generation
References
-
github.com
/neos/neos-development-collection/pull/4812
web
-
github.com
/neos/neos-development-collection/commit/4ac0df04d2e44e164e95887b466075dde3f04045
web
-
rodelllemit.medium.com
/stored-xss-in-neo-cms-8-3-3-9bd1cb973c5b
web, exploit
-
nvd.nist.gov
/vuln/detail/CVE-2023-37611
advisory
-
github.com
/neos/neos-development-collection/issues/4833
web
-
cheatsheetseries.owasp.org
/cheatsheets/Content_Security_Policy_Cheat_Sheet.html
web
-
digi.ninja
/blog/svg_xss.php
web
-
github.com
/neos/neos-development-collection
package
-
github.com
/neos/neos-ui/releases/tag/8.3.4
web
Sources
- CVE List CVE-2023-37611
- GitHub Advisory GHSA-6qjf-7g3j-qx25
- NVD CVE-2023-37611
- OSV BIT-neos-2023-37611
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