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Advisory record · GHSA-j74q-mv2c-rxmp

Umbraco CMS Open Redirect Bypass Protection

CVSS 6.1 MediumEPSS 0.0037 · 31st percentile

Published by the GitHub Advisory Database at 21 May 2024, 14:29 UTC. agentprime has not analysed this yet, so whether it affects any app is not known.

PackageEcosystemAffectedFixed in
UmbracoCms.CoreNuGet>=8.18.5, <8.18.14 || >=10.5.0, <10.8.6 || >=12.0.0, <12.3.10 || >=13.0.0, <13.3.18.18.14, 10.8.6, 12.3.10, 13.3.1
Umbraco.Cms.Web.BackOfficeNuGet>=8.18.5, <8.18.14 || >=10.5.0, <10.8.6 || >=12.0.0, <12.3.10 || >=13.0.0, <13.3.18.18.14, 10.8.6, 12.3.10, 13.3.1
Identifiers
GHSA-j74q-mv2c-rxmp · CVE-2024-34071
Weakness (CWE)
CWE-601
Tags
Published
21 May 2024
Updated
10 Sept 2026

Machine-written summary

Summary written by Claude Haiku from the source advisory. Not reviewed by a person.

Umbraco CMS (packages UmbracoCms.Core and Umbraco.Cms.Web.BackOffice) versions 8.18.5 to before 8.18.14, 10.5.0 to before 10.8.6, 12.0.0 to before 12.3.10, and 13.0.0 to before 13.3.1 contain an open redirect in an endpoint. An attacker would need a user to be signed into the backoffice, and could then send that user to an arbitrary external site. Upgrade to 8.18.14, 10.8.6, 12.3.10, or 13.3.1, matching your major version.

Written 9 Nov 2026.

Not analysed yet

We haven’t published our analysis of this Advisory yet. Once a person has reviewed it, this page will say what’s vulnerable, what has to be true for your app to be affected, and how to check.

Severity and exploitation

ScoreRatingCVSSVectorSource
6.1 Medium 3.1 CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N CNA (GitHub_M)
  • CISA KEV Not listed.
  • EPSS 0.0037, the 31st percentile, on 11 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.

Timeline

  1. 21 May 2024, 06:41 UTC Published by the maintainers as a GitHub repository advisory
  2. 31 Oct 2026, 15:21 UTC First seen by agentprime
  3. 31 Oct 2026, 15:21 UTC Confirmed by OSV

Sources

Facts on this page come from the GitHub Advisory Database (CC-BY 4.0), OSV and the other sources listed, as published. We don’t reproduce full advisory descriptions, which can contain exploit code.