CVE-2021-27733
In JetBrains YouTrack before 2020.6.6441, stored XSS was possible via an issue attachment.
In JetBrains YouTrack before 2020.6.6441, stored XSS was possible via an issue attachment.
Attack profile
How easy it is to exploit
- Attack vector
- Network
- Complexity
- Low
- Privileges needed
- Low
- User interaction
- Required
What an attacker can affect
- Confidentiality
- Low
- Integrity
- Low
- Availability
- None
Exploit likelihood
What each source reports
NVD Score used
In JetBrains YouTrack before 2020.6.6441, stored XSS was possible via an issue attachment.
- Record
CVE-2021-27733- CVSS 3.1
- 5.4 Medium
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N - CVSS 2.0
- 3.5 Low
AV:N/AC:M/Au:S/C:N/I:P/A:N - Weakness
- CWE-79
- Updated
- 2026-11-02
CVE List No score
In JetBrains YouTrack before 2020.6.6441, stored XSS was possible via an issue attachment.
- Record
CVE-2021-27733- Updated
- 2026-11-02
EUVDEUVD-2021-14475 No score
In JetBrains YouTrack before 2020.6.6441, stored XSS was possible via an issue attachment.
- Record
EUVD-2021-14475- Updated
- 2026-11-03
GitHub AdvisoriesGHSA-r433-c7vq-9gp5 No score
In JetBrains YouTrack before 2020.6.6441, stored XSS was possible via an issue attachment.
In JetBrains YouTrack before 2020.6.6441, stored XSS was possible via an issue attachment.
- Record
GHSA-r433-c7vq-9gp5- Weakness
- CWE-79
- Updated
- 2026-11-02
Affected products
History
| Recorded | Changed | Sources |
|---|---|---|
| aliases | EUVD | |
| first indexed | CVE List, GitHub Advisories, NVD |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2021-27733 is a medium vulnerability (CVSS 5.4) in Jetbrains Youtrack, published May 11, 2021. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.58%, the 47th percentile. No source names a fixed version.