4.6Medium

CVE-2026-86484

In JetBrains YouTrack before 2026.2.18634 angularJS template injection in assignee names led to stored XSS

What this means for your business

  • An attacker can use it remotely, over a network, with an ordinary user login, but only after tricking someone into an action such as opening a file or a link.

What to do

  1. 1Ask your IT team or provider whether any of your systems use the affected product.
  2. 2If you do, follow the vendor's guidance. No patch reference has been published yet.

Not sure if your company is exposed?

Fastnexa’s certified penetration testers can check whether attackers could use this flaw, or others like it, against your websites, apps and network. The full test is free for our first 10 founding clients until 31 December 2026.

Scoring

CVSS
4.6 (v3.1)
Vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:L/I:L/A:N
Weakness
CWE-79
Assigned by
cve@jetbrains.com

Dates

Published
2026-09-07
Last modified
2026-09-08
Sources
NVD

References