CVE-2024-55488 json
Withdrawn Advisory: Umbraco Rich Text Display allows Cross-Site Scripting
published 2025-01-22 21 mo ago modified 2026-09-10 1 mo ago also GHSA-572q-86rr-5vgq , EUVD-2024-52775
- cvss
- 6.5
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.3%
- EPSS 0.3% chance of exploitation in 30 days, percentile 26%
- public exploits
- 0
- none known
Summary
A stored cross-site scripting (XSS) vulnerability in Umbraco CMS v14.3.1 allows attackers to execute arbitrary web scripts or HTML via a crafted payload. NOTE: This has been disputed by the vendor since this potential attack is only possible via authenticated users who have been manually allowed access to the CMS. There was a deliberate decision made not to apply HTML sanitization at the product level.
Patch / fix
CISA SSVC
- Exploitation
- Proof of concept is public
- Automatable
- yes
- Technical impact
- partial
- Assessed
- 21 mo ago
Exploit prediction
0.33% chance of exploitation in the next 30 days, higher than 26% of all scored CVEs (FIRST EPSS, 2026-11-08).
Exploits and checks
- nccgroup.com https://www.nccgroup.com/us/research-blog/technical-advisory-cross-site-scripting-in-umbraco-rich-text-display/ referenced PoC, tagged "exploit" by a source, unverified
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CISA ADP | 3.1 | 6.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N |
| CNA | 3.1 | 6.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N |
Classification
- Weakness
-
- CWE-79 Improper Neutralization of Input During Web Page Generation
References
-
github.com
/umbraco/Umbraco-CMS/pull/17164
web
-
nccgroup.com
/us/research-blog/technical-advisory-cross-site-scripting-in-umbraco-rich-text-display/
exploit, third-party-advisory
- docs.umbraco.com /umbraco-cms/develop-with-umbraco/templating-and-rendering/design/stylesheets-javascript
-
nvd.nist.gov
/vuln/detail/CVE-2024-55488
advisory
-
github.com
/github/advisory-database/pull/5270
web
-
github.com
/umbraco/Umbraco-CMS
package
-
github.com
/umbraco/Umbraco-CMS/releases/tag/release-15.0.0-rc1
web
-
nccgroup.com
/us/research-blog/technical-advisory-cross-site-scripting-in-umbraco-rich-text-display
web
-
umbraco.com
web
Sources
- CVE List CVE-2024-55488
- GitHub Advisory GHSA-572q-86rr-5vgq
- NVD CVE-2024-55488
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