CVE-2026-100262 Missing authorization in YouTrack

What is CVE-2026-100262?

CVE-2026-100262 is a high-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 missing authorisation allowed users with read-only project access to overwrite project notification templates

Weakness: CWE-863

Which versions are affected by CVE-2026-100262?

It affects 1 product.

Products include Jetbrains Youtrack.

How do I fix CVE-2026-100262?

No fix has been published for CVE-2026-100262 yet. Limit exposure of the affected software until one is available.

Upgrade, and check permissions on every request on the server, not only in the interface. More about Missing authorization.

Is CVE-2026-100262 being exploited?

There is no known exploitation of CVE-2026-100262 in the wild and no public exploit code.

Other vulnerabilities in Jetbrains Youtrack

• CVE-2026-62422 Auth bypass in YouTrack Critical 10.0
• CVE-2022-24442 Code injection in n/a Critical 9.8
• CVE-2021-43185 Other in n/a Critical 9.8
• CVE-2021-25770 Code injection in n/a Critical 9.8
• CVE-2019-12850 SQL injection in n/a Critical 9.8

All Jetbrains Youtrack vulnerabilities

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• How this page is made

Also known as GHSA-q872-prmj-w466.