CVE-2021-43185
JetBrains YouTrack before 2021.3.23639 is vulnerable to Host header injection.
JetBrains YouTrack before 2021.3.23639 is vulnerable to Host header injection.
Attack profile
How easy it is to exploit
- Attack vector
- Network
- Complexity
- Low
- Privileges needed
- None
- User interaction
- None
What an attacker can affect
- Confidentiality
- High
- Integrity
- High
- Availability
- High
Exploit likelihood
What each source reports
NVD Score used
JetBrains YouTrack before 2021.3.23639 is vulnerable to Host header injection.
- Record
CVE-2021-43185- CVSS 3.1
- 9.8 Critical
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H - CVSS 2.0
- 7.5 High
AV:N/AC:L/Au:N/C:P/I:P/A:P - Weakness
- CWE-74
- Updated
- 2026-11-02
CVE ListNo score
JetBrains YouTrack before 2021.3.23639 is vulnerable to Host header injection.
- Record
CVE-2021-43185- Updated
- 2026-11-02
EUVDEUVD-2021-30129No score
JetBrains YouTrack before 2021.3.23639 is vulnerable to Host header injection.
- Record
EUVD-2021-30129- Updated
- 2026-11-03
GitHub AdvisoriesGHSA-vv73-h85j-cqvwNo score
JetBrains YouTrack before 2021.3.23639 is vulnerable to Host header injection.
JetBrains YouTrack before 2021.3.23639 is vulnerable to Host header injection.
- Record
GHSA-vv73-h85j-cqvw- Weakness
- CWE-74
- 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-2021-43185 is a critical vulnerability (CVSS 9.8) in Jetbrains Youtrack, published November 9, 2021. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 2.01%, the 81st percentile. No source names a fixed version.