CVE-2021-43203
- Source
- https://cve.org/CVERecord?id=CVE-2021-43203
- Import Source
- https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2021-43203.json
- JSON Data
- https://api.test.osv.dev/v1/vulns/CVE-2021-43203
- Published
- 2021-11-09T15:15:10.110Z
- Modified
- 2025-11-14T12:33:52.521787Z
- Severity
-
- 7.5 (High) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N CVSS Calculator
- Summary
- [none]
- Details
-
In JetBrains Ktor before 1.6.4, nonce verification during the OAuth2 authentication process is implemented improperly.
- References
Affected packages
Git / github.com/ktorio/ktor
Affected ranges
- Type
- GIT
- Repo
- https://github.com/ktorio/ktor
- Events
-
Introduced0 Unknown introduced commit / All previous commits are affectedFixed
Affected versions
0.*
0.9.0
0.9.0-alpha-2
0.9.0-alpha-3
0.9.1
0.9.1-alpha-10
0.9.1-alpha-4
0.9.1-alpha-5
0.9.1-alpha-6
0.9.1-alpha-7
0.9.1-alpha-8
0.9.1-alpha-9
0.9.2
0.9.2-alpha-1
0.9.2-alpha-2
0.9.2-alpha-3
0.9.2-alpha-4
0.9.2-alpha-5
0.9.2-alpha-6
0.9.3-alpha-1
0.9.3-alpha-2
0.9.3-alpha-3
0.9.3-alpha-4
0.9.4
0.9.4-alpha-2
0.9.4-dev-3
0.9.5
1.*
1.0.0
1.0.0-alpha-1
1.0.0-alpha-2
1.0.0-alpha-3
1.0.0-beta-1
1.0.0-beta-2
1.0.0-beta-3
1.0.0-beta-4
1.0.0-rc
1.0.1
1.1.0
1.1.1
1.1.2
1.2.0
1.2.0-alpha-1
1.2.0-alpha-2
1.2.0-rc
1.2.0-rc2
1.2.1
1.2.2
1.2.3
1.2.3-rc
1.3.0
1.3.0-beta-1
1.3.0-beta-2
1.3.0-rc
1.3.0-rc2
1.3.1
1.3.2
1.4.0
1.4.1
1.4.2
1.4.3
1.5.0
1.5.1
1.5.2
1.5.3
1.5.4
1.6.0
1.6.1
1.6.2
1.6.3
build-0.*
build-0.4.0-alpha-10
build-0.4.0-alpha-11
build-0.4.0-alpha-12
build-0.4.0-alpha-13
build-0.4.0-alpha-14
build-0.4.0-alpha-15
build-0.4.0-alpha-6
build-0.4.0-alpha-7
build-0.4.0-alpha-8
build-0.4.0-alpha-9
build-0.4.1-alpha-16
ktor-0.*
ktor-0.1.2
ktor-0.1.3
ktor-0.1.4
ktor-0.1.5
ktor-0.1.6
ktor-0.1.7
ktor-0.1.8
ktor-0.2.0
ktor-0.2.1
ktor-0.2.2
ktor-0.2.3
ktor-0.2.4
ktor-0.3.0
ktor-0.3.1
ktor-0.3.2
ktor-0.3.3
ktor-0.4.0