# CVE-2026-100261: Missing authorization in YouTrack

> Attackers can modify article visibility settings in JetBrains YouTrack without having the required update permission.

- **Severity:** Medium 5.4 (`CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N`)
- **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:** 30 Sep 2026
- **Updated:** 30 Sep 2026
- **Also known as:** GHSA-xpcv-h458-r782

## What is CVE-2026-100261?

CVE-2026-100261 is a medium-severity missing authorization vulnerability in Jetbrains Youtrack, published on 30 Sep 2026. Any signed-in user can exploit it over the network, with no action from the victim.

### Official description

In JetBrains YouTrack before 2026.2.18991 changing article visibility settings was possible without update permission

Weakness: CWE-288 (Authentication Bypass Using an Alternate Path or Channel)

## Which versions are affected by CVE-2026-100261?

It affects 1 product.


Products: Jetbrains Youtrack.

## How do I fix CVE-2026-100261?

No fix has been published for CVE-2026-100261 yet. Limit exposure of the affected software until one is available.

## Is CVE-2026-100261 being exploited?

There is no known exploitation of CVE-2026-100261 in the wild and no public exploit code.

## Other vulnerabilities in Jetbrains Youtrack

- [CVE-2026-62422](https://insights.sbomify.com/CVE-2026-62422/): Auth bypass in YouTrack (critical 10.0)
- [CVE-2022-24442](https://insights.sbomify.com/CVE-2022-24442/): Code injection in n/a (critical 9.8)
- [CVE-2021-43185](https://insights.sbomify.com/CVE-2021-43185/): Other in n/a (critical 9.8)
- [CVE-2021-25770](https://insights.sbomify.com/CVE-2021-25770/): Code injection in n/a (critical 9.8)
- [CVE-2019-12850](https://insights.sbomify.com/CVE-2019-12850/): SQL injection in n/a (critical 9.8)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-100261 and fix it if it is affected.

What it is: CVE-2026-100261 is a medium-severity missing authorization vulnerability in Jetbrains Youtrack, published on 30 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-2026-100261 in the wild and no public exploit code.

Affected product: Jetbrains Youtrack. 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-2026-100261/ (Markdown: https://insights.sbomify.com/CVE-2026-100261/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-100261
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-100261
- OSV: https://osv.dev/vulnerability/CVE-2026-100261

---
From sbomify Insights: https://insights.sbomify.com/CVE-2026-100261/
Summaries are generated and may contain mistakes; the official description above is the record.