CVE-2026-103493
In JetBrains YouTrack before 2026.2.19422 stored XSS via Mermaid and LaTeX content was possible
In JetBrains YouTrack before 2026.2.19422 stored XSS via Mermaid and LaTeX content was possible
Attack profile
How easy it is to exploit
- Attack vector
- Network
- Complexity
- Low
- Privileges needed
- None
- User interaction
- Required
What an attacker can affect
- Confidentiality
- High
- Integrity
- High
- Availability
- None
Exploit likelihood
What each source reports
CVE List Score used
In JetBrains YouTrack before 2026.2.19422 stored XSS via Mermaid and LaTeX content was possible
- Record
CVE-2026-103493- CVSS 3.1
- 8.1 High
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N - Weakness
- CWE-79
- Updated
- 2026-11-02
EUVDEUVD-2026-90584
In JetBrains YouTrack before 2026.2.19422 stored XSS via Mermaid and LaTeX content was possible
- Record
EUVD-2026-90584- CVSS 3.1
- 8.1 High
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N - Updated
- 2026-11-02
GitHub AdvisoriesGHSA-6qqm-669w-6778
In JetBrains YouTrack before 2026.2.19422 stored XSS via Mermaid and LaTeX content was possible
In JetBrains YouTrack before 2026.2.19422 stored XSS via Mermaid and LaTeX content was possible
- Record
GHSA-6qqm-669w-6778- CVSS 3.1
- 8.1 High
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N - Weakness
- CWE-79
- Updated
- 2026-11-02
NVD
In JetBrains YouTrack before 2026.2.19422 stored XSS via Mermaid and LaTeX content was possible
- Record
CVE-2026-103493- CVSS 3.1
- 8.1 High
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N - Weakness
- CWE-79
- Updated
- 2026-11-02
Affected products
History
| Recorded | Changed | Sources |
|---|---|---|
| first indexed | CVE List, EUVD, GitHub Advisories, NVD |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2026-103493 is a high vulnerability (CVSS 8.1) in Jetbrains Youtrack, published October 1, 2026. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.22%, the 12th percentile. No source names a fixed version.