# CVE-2026-84672: Auth bypass in Jenkins Microsoft Entra ID (previously Azure AD) Plugin

> Attackers can gain privileged permissions by creating an Entra group with a colliding display name, bypassing authorization checks in the Jenkins plugin.

- **Severity:** High 8.8 (`CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H`)
- **Exploited in the wild:** Not known
- **Login needed:** Any signed-in user
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 2 Sep 2026
- **Updated:** 2 Sep 2026
- **Also known as:** GHSA-fhmr-cpfh-453h

## What is CVE-2026-84672?

CVE-2026-84672 is a high-severity authentication bypass vulnerability in Jenkins Microsoft Entra ID (previously Azure AD) Plugin, published on 2 Sep 2026. Any signed-in user can exploit it over the network, with no action from the victim.

### Official description

Jenkins Microsoft Entra ID (previously Azure AD) Plugin 710.v0b_ff8e9cc2d2 and earlier grants Entra group permissions using both the group's unique object ID and its display name, allowing attackers who can create an Entra group with a colliding display name to gain the permissions configured for a privileged group.

Weakness: CWE-639 (Authorization Bypass Through User-Controlled Key)

## Which versions are affected by CVE-2026-84672?


## How do I fix CVE-2026-84672?

No fix has been published for CVE-2026-84672 yet. Limit exposure of the affected software until one is available.

## Is CVE-2026-84672 being exploited?

There is no known exploitation of CVE-2026-84672 in the wild and no public exploit code.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-84672 and fix it if it is affected.

What it is: CVE-2026-84672 is a high-severity authentication bypass vulnerability in Jenkins Microsoft Entra ID (previously Azure AD) Plugin, published on 2 Sep 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2026-84672 in the wild and no public exploit code.

Affected product: Jenkins Microsoft Entra ID (previously Azure AD) Plugin. No package-level version data is available, so check the vendor advisory linked from the reference page.

Task:
1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.
2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.
3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.
4. Run the tests and summarise what changed and why.
5. If nothing in the project is affected, say so and change nothing.

Reference: https://insights.sbomify.com/CVE-2026-84672/ (Markdown: https://insights.sbomify.com/CVE-2026-84672/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-84672
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-84672
- OSV: https://osv.dev/vulnerability/CVE-2026-84672

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From sbomify Insights: https://insights.sbomify.com/CVE-2026-84672/
Summaries are generated and may contain mistakes; the official description above is the record.