CVE-2026-86492 Information disclosure in YouTrack
High 8.5
Published
Updated
Check this codebase for CVE-2026-86492 and fix it if it is affected.
What it is: CVE-2026-86492 is a high-severity vulnerability in JetBrains YouTrack, published on 7 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-2026-86492 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-2026-86492/ (Markdown: https://insights.sbomify.com/CVE-2026-86492/index.md)
Attackers can steal GitHub App installation tokens from other tenants due to a shared token cache in JetBrains YouTrack.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-86492?
CVE-2026-86492 is a high-severity vulnerability in JetBrains YouTrack, published on 7 Sep 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
In JetBrains YouTrack before 2026.2.18634 a shared token cache allowed cross-tenant theft of GitHub App installation tokens
Weakness: CWE-488
Which versions are affected by CVE-2026-86492?
How do I fix CVE-2026-86492?
No fix has been published for CVE-2026-86492 yet. Limit exposure of the affected software until one is available.
Is CVE-2026-86492 being exploited?
There is no known exploitation of CVE-2026-86492 in the wild and no public exploit code.
Sources
Also known as GHSA-p8f6-44xp-3cp8.