CVE-2026-103490 Privilege escalation in YouTrack
High 7.2
Published
Updated
Check this codebase for CVE-2026-103490 and fix it if it is affected.
What it is: CVE-2026-103490 is a high-severity vulnerability in Jetbrains Youtrack, published on 1 Oct 2026. An attacker needs administrator access to exploit it, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2026-103490 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-2026-103490/ (Markdown: https://insights.sbomify.com/CVE-2026-103490/index.md)
Attackers can escalate privileges via user group links in JetBrains YouTrack, requiring an upgrade to the latest version.
- Exploited in the wild
- Not known
- Login needed
- An administrator
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-103490?
CVE-2026-103490 is a high-severity vulnerability in Jetbrains Youtrack, published on 1 Oct 2026. An attacker needs administrator access to exploit it, with no action from the victim.
Official description
In JetBrains YouTrack before 2026.2.19422 privilege escalation was possible via user group links
Weakness: CWE-862
Which versions are affected by CVE-2026-103490?
It affects 1 product.
Products include Jetbrains Youtrack.
How do I fix CVE-2026-103490?
No fix has been published for CVE-2026-103490 yet. Limit exposure of the affected software until one is available.
Is CVE-2026-103490 being exploited?
There is no known exploitation of CVE-2026-103490 in the wild and no public exploit code.
Other vulnerabilities in Jetbrains Youtrack
Sources
Also known as GHSA-9xfx-g95j-mffp.