CVE-2021-31903
In JetBrains YouTrack before 2021.1.9819, a pull request's title was sanitized insufficiently,...
In JetBrains YouTrack before 2021.1.9819, a pull request's title was sanitized insufficiently, leading to XSS.
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
- Low
- Integrity
- Low
- Availability
- None
Exploit likelihood
What each source reports
NVD Score used
In JetBrains YouTrack before 2021.1.9819, a pull request's title was sanitized insufficiently, leading to XSS.
- Record
CVE-2021-31903- CVSS 3.1
- 6.1 Medium
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N - CVSS 2.0
- 4.3 Medium
AV:N/AC:M/Au:N/C:N/I:P/A:N - Weakness
- CWE-79
- Updated
- 2026-11-02
CVE List No score
In JetBrains YouTrack before 2021.1.9819, a pull request's title was sanitized insufficiently, leading to XSS.
- Record
CVE-2021-31903- Updated
- 2026-11-02
EUVDEUVD-2021-18778 No score
In JetBrains YouTrack before 2021.1.9819, a pull request's title was sanitized insufficiently, leading to XSS.
- Record
EUVD-2021-18778- Updated
- 2026-11-03
GitHub AdvisoriesGHSA-474g-w58m-p2m4 No score
In JetBrains YouTrack before 2021.1.9819, a pull request's title was sanitized insufficiently,...
In JetBrains YouTrack before 2021.1.9819, a pull request's title was sanitized insufficiently, leading to XSS.
- Record
GHSA-474g-w58m-p2m4- 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-2021-31903 is a medium vulnerability (CVSS 6.1) 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 0.78%, the 56th percentile. No source names a fixed version.