Umbraco is an ASP.NET CMS used by more than 730.000 websites. Umbraco has an endpoint that is vulnerable to open redirects. The endpoint is protected so it requires the user to be signed into backoffice before the vulnerable is exposed. This vulnerability has been patched in version(s) 8.18.14, 10.8.6, 12.3.10 and 13.3.1.
CVE-2024-34071
This medium-severity CVE scores 6.1 under NVD CVSS v3. EPSS exploit probability: 0.5%, top 33% of all CVEs by exploit prediction. GitHub Security Advisory data not yet ingested — confidence will rise once GHSA publishes (typical lag: hours to days for open-source ecosystem CVEs; never for infrastructure-only CVEs).
- Lower severity and no public exploit yet
No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.
- CVSS v3
- 6.1
- EG Score
- 6.1(medium)
- EPSS
- 29.6%
- KEV
- Not listed
Published
May 21, 2024
Last Modified
February 12, 2025
References (10)
- security-advisories@githubhttps://github.com/umbraco/Umbraco-CMS/commit/5f24de308584b9771240a6db1a34630a5114c450
- security-advisories@githubhttps://github.com/umbraco/Umbraco-CMS/commit/c17d4e1a600098ec524e4126f4395255476bc33f
- security-advisories@githubhttps://github.com/umbraco/Umbraco-CMS/commit/c8f71af646171074c13e5c34f74312def4512031
- security-advisories@githubhttps://github.com/umbraco/Umbraco-CMS/commit/d8df405db4ea884bb4b96f088d10d9a2070cf024
- security-advisories@githubhttps://github.com/umbraco/Umbraco-CMS/security/advisories/GHSA-j74q-mv2c-rxmp
- af854a3a-2127-422b-91ae-364da2661108https://github.com/umbraco/Umbraco-CMS/commit/5f24de308584b9771240a6db1a34630a5114c450
- af854a3a-2127-422b-91ae-364da2661108https://github.com/umbraco/Umbraco-CMS/commit/c17d4e1a600098ec524e4126f4395255476bc33f
- af854a3a-2127-422b-91ae-364da2661108https://github.com/umbraco/Umbraco-CMS/commit/c8f71af646171074c13e5c34f74312def4512031
- af854a3a-2127-422b-91ae-364da2661108https://github.com/umbraco/Umbraco-CMS/commit/d8df405db4ea884bb4b96f088d10d9a2070cf024
- af854a3a-2127-422b-91ae-364da2661108https://github.com/umbraco/Umbraco-CMS/security/advisories/GHSA-j74q-mv2c-rxmp
Affected Packages
(2 across 1 ecosystem)
NuGet(2)
| Package | Vulnerable range | Fixed in | Dependents |
|---|---|---|---|
| UmbracoCms.Core | — | 13.3.1 | — |
| Umbraco.Cms.Web.BackOffice | 13.0.0 ... 13.3.0-rc (13 versions) | 13.3.1 | — |
Weakness Classification(1)
MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.
Data Freshness Timeline
(refreshed 10× in last 7d / 45× in last 30d)
Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.
- 2026-07-12 05:45 UTCEPSS rescore
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- 2026-05-24 01:39 UTCEG score recompute
Related CVEs(same CWE)
Same CWE
10 shownCWE-601
Frequently asked(5)
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