# CVE-2026-75045: Auth bypass in YouTrack

> An unauthenticated attacker can download database backups by exploiting a shared draft signature vulnerability in JetBrains YouTrack.

- **Severity:** Critical 9.1 (`CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 17 Aug 2026
- **Updated:** 18 Aug 2026
- **Also known as:** GHSA-68v9-f358-h326

## What is CVE-2026-75045?

CVE-2026-75045 is a critical authentication bypass vulnerability in Jetbrains Youtrack, published on 17 Aug 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

In JetBrains YouTrack before 2025.3.156085, 
2026.1.13913, 
2026.2.18112 an unauthenticated attacker could download database backups via shared draft signature

Weakness: CWE-288 (Authentication Bypass Using an Alternate Path or Channel)

## Which versions are affected by CVE-2026-75045?

It affects 1 product.


Products: Jetbrains Youtrack.

## How do I fix CVE-2026-75045?

No fix has been published for CVE-2026-75045 yet. Limit exposure of the affected software until one is available.

## Is CVE-2026-75045 being exploited?

There is no known exploitation of CVE-2026-75045 in the wild and no public exploit code.

Public exploit code:

- CVE-2026-75045 - JetBrains YouTrack unauthenticated database backup download via shared draft signature (CVSS 9.1) (github_poc): https://github.com/LHeiakim/CVE-2026-75045-PoC

## Other vulnerabilities in Jetbrains Youtrack

- [CVE-2026-62422](https://insights.sbomify.com/CVE-2026-62422/): Auth bypass in YouTrack (critical 10.0)
- [CVE-2022-24442](https://insights.sbomify.com/CVE-2022-24442/): Code injection in n/a (critical 9.8)
- [CVE-2021-43185](https://insights.sbomify.com/CVE-2021-43185/): Other in n/a (critical 9.8)
- [CVE-2021-25770](https://insights.sbomify.com/CVE-2021-25770/): Code injection in n/a (critical 9.8)
- [CVE-2019-12850](https://insights.sbomify.com/CVE-2019-12850/): SQL injection in n/a (critical 9.8)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-75045 and fix it if it is affected.

What it is: CVE-2026-75045 is a critical authentication bypass vulnerability in Jetbrains Youtrack, published on 17 Aug 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2026-75045 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-2026-75045/ (Markdown: https://insights.sbomify.com/CVE-2026-75045/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-75045
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-75045
- OSV: https://osv.dev/vulnerability/CVE-2026-75045

---
From sbomify Insights: https://insights.sbomify.com/CVE-2026-75045/
Summaries are generated and may contain mistakes; the official description above is the record.