---
id: "CVE-2026-123335"
page: "https://infrastack.ai/live/CVE-2026-123335"
kind: "vulnerability"
aliases: ["CVE-2026-123335"]
title: "JetBrains YouTrack: missing authorization lets users attach tags to any issue"
severity: "low"
cvss: 3.5
epss: null
exploited: false
status: "open"
category: "other"
products: []
ecosystems: []
tags: ["jetbrains", "other", "self-hosted", "youtrack"]
not_affected_if: ["already-patched"]
published_at: "2026-11-06T11:17:13+00:00"
first_seen_at: "2026-11-06T11:41:28+00:00"
updated_at: "2026-11-06T11:42:50+00:00"
sources: [{"source": "nvd", "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-123335", "first_seen_at": "2026-11-06T11:41:28+00:00"}]
exploit_sources: []
---

# JetBrains YouTrack: missing authorization lets users attach tags to any issue

Link for people: https://infrastack.ai/live/CVE-2026-123335 (this .md is for agents)

JetBrains YouTrack did not check permissions when adding tags through the tag issues collection, so a user could attach tags to any issue. An attacker could change how issues are labelled and filtered, but the sources do not describe access to issue content.

_Summary, check and fix written by a model from the sources; labelled as such._

## How to check

- Check the installed YouTrack version against `2026.2.19562`, `2026.1.14137` and `2025.3.169041`.
- Versions below the fixed build on your release line are affected.

## Fix

- Upgrade YouTrack to `2026.2.19562` on the 2026.2 line.
- Upgrade YouTrack to `2026.1.14137` on the 2026.1 line.
- Upgrade YouTrack to `2025.3.169041` on the 2025.3 line.

## Timeline

- 2026-11-06T11:41:28+00:00 nvd https://nvd.nist.gov/vuln/detail/CVE-2026-123335

## From the sources

In JetBrains YouTrack before 2026.2.19562, 
2026.1.14137, 
2025.3.169041 missing authorization  allowed attaching tags to any issue via the tag issues collection

---

_Free to read, with fair use of about 60 pages a minute. For higher limits or API access: sales@infrastack.ai_