CVE-2026-86485 Auth bypass in YouTrack
Attackers can spoof IP addresses via HTTP headers to forge Bitbucket webhooks, bypassing security controls in JetBrains YouTrack.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Local or same network only
- Victim action needed
- A user has to click or open something
- Fix
- None listed
What is CVE-2026-86485?
CVE-2026-86485 is a low-severity authentication bypass vulnerability in JetBrains YouTrack, published on 7 Sep 2026. It can only be exploited from the same machine or local network, and only if a user opens a file or follows a link.
Official description
In JetBrains YouTrack before 2026.2.18634 iP spoofing via HTTP headers allowed forged Bitbucket webhooks
Weakness: CWE-291
Which versions are affected by CVE-2026-86485?
How do I fix CVE-2026-86485?
No fix has been published for CVE-2026-86485 yet. Limit exposure of the affected software until one is available.
Upgrade, and rotate credentials and sessions that may have been exposed. More about Authentication bypass.
Is CVE-2026-86485 being exploited?
There is no known exploitation of CVE-2026-86485 in the wild and no public exploit code.
Sources
Also known as GHSA-cxhf-5fgf-w8g4.