Ktor
Vendor:
First CVE: Jul 3, 2019 · Active for 7 years
21
Total CVEs
More Total CVEs than 94% of tracked products
3.0
Avg CVEs / Year
Higher CVE frequency than 76% of tracked products
6.3
Avg CVSS
Higher Avg CVSS than 26% of tracked products
0.0%
KEV Rate
Bottom 1%
Trends Over Time
The number and severity of CVEs published that impact Ktor over time
Volume of CVEsAvg CVSS Base Score
First CVE
Jul 3, 2019
7 years ago
Most Recent CVE
Mar 12, 2025
502 days ago
CVE Severity & Scoring
Ktor21 CVEs
10%
57%
19%
14%
All CVEs352,785 CVEs
45%
40%
11%
LowMediumHighCritical
Attack Vector
Local1 (4.8%)
Network20 (95.2%)
Unknown0 (0.0%)
Physical0 (0.0%)
Adjacent Network0 (0.0%)
Attack Complexity
Low20 (95.2%)
High1 (4.8%)
Unknown0 (0.0%)
User Interaction
None17 (81.0%)
Unknown0 (0.0%)
Required4 (19.0%)
Privileges Required
Low2 (9.5%)
High2 (9.5%)
None17 (81.0%)
Unknown0 (0.0%)
Top CVEs
Signals from CVEs in this product scope (21 CVEs).
21 CVEs · Highest risk first
| CVE | Published | CVSS | Risk | KEV | Exploit |
|---|---|---|---|---|---|
CVE-2019-12736CRITICAL JetBrains Ktor framework before 1.2.0-rc does not sanitize the username provided by the user for the LDAP protocol, leading to command injection. | Oct 2, 2019 | 9.8 | 28 | NO | NO |
CVE-2023-45613CRITICAL In JetBrains Ktor before 2.3.5 server certificates were not verified | Oct 9, 2023 | 9.1 | 27 | NO | NO |
CVE-2023-45612CRITICAL In JetBrains Ktor before 2.3.5 default configuration of ContentNegotiation with XML format was vulnerable to XXE | Oct 9, 2023 | 9.8 | 26 | NO | NO |
CVE-2022-48476HIGH In JetBrains Ktor before 2.3.0 path traversal in the `resolveResource` method was possible
| Apr 24, 2023 | 7.5 | 24 | NO | NO |
CVE-2021-43203HIGH In JetBrains Ktor before 1.6.4, nonce verification during the OAuth2 authentication process is implemented improperly. | Nov 9, 2021 | 7.5 | 24 | NO | NO |
CVE-2019-10102HIGH JetBrains Ktor framework (created using the Kotlin IDE template) versions before 1.1.0 were resolving artifacts using an http connection during the build process, potentially allow | Jul 3, 2019 | 8.1 | 24 | NO | NO |
CVE-2022-38179MEDIUM JetBrains Ktor before 2.1.0 was vulnerable to the Reflect File Download attack | Aug 12, 2022 | 6.1 | 21 | NO | NO |
CVE-2020-26129MEDIUM In JetBrains Ktor before 1.4.1, HTTP request smuggling was possible. | Nov 16, 2020 | 6.5 | 21 | NO | NO |
CVE-2019-19703MEDIUM In Ktor through 1.2.6, the client resends data from the HTTP Authorization header to a redirect location. | Dec 10, 2019 | 6.1 | 21 | NO | NO |
CVE-2022-29930MEDIUM SHA1 implementation in JetBrains Ktor Native 2.0.0 was returning the same value. The issue was fixed in Ktor version 2.0.1. | May 12, 2022 | 4.9 | 19 | NO | NO |
Exploit Exposure
Signals from CVEs in this product scope (21 CVEs).
CISA KEV
0 CVEs
0.0% of CVEs· Bottom 1%
Metasploit
0 CVEs
0.0% of CVEs· Bottom 1%
Nuclei
0 CVEs
0.0% of CVEs· Bottom 1%
ExploitDB
0 CVEs
0.0% of CVEs· Bottom 1%
Social Chatter
Signals from CVEs in this product scope (21 CVEs).
Media Mentions
Signals from CVEs in this product scope (21 CVEs).
Top CNAs Publishing CVEs For Ktor
Top CWEs
Versions
| Version | CVE Count | Avg CVSS | Avg EPSS | KEV | Exploits |
|---|---|---|---|---|---|
| 2.0.0 | 1 | 4.9 | 0.8% | 0 | 0 |
| 1.2.0 | 1 | 5.3 | 0.7% | 0 | 0 |