CVE-2019-12736
CVE-2019-12736 is a critical-severity vulnerability in Jetbrains Ktor with a CVSS 3.x base score of 9.8. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-77.
Key facts
- Severity: Critical (CVSS 3.x base score 9.8)
- CVSS v2: 7.5
- EPSS exploit prediction: 2% (82nd percentile)
- Actively exploited: Not listed in CISA KEV
- Weakness: CWE-77
- Affected product: Jetbrains Ktor
- Published:
- Last modified:
Description
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.
Frequently asked questions
- What is CVE-2019-12736?
- 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.
- How severe is CVE-2019-12736?
- CVE-2019-12736 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
- Is CVE-2019-12736 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (82nd percentile), an estimate of the probability of exploitation in the next 30 days.
- What products are affected by CVE-2019-12736?
- CVE-2019-12736 affects Jetbrains Ktor. See the affected-products list for the exact vulnerable versions.
- How do I fix CVE-2019-12736?
- Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
- When was CVE-2019-12736 published?
- CVE-2019-12736 was published on 2019-10-02 and last updated on 2026-06-17.
References
Affected products (1)
- cpe:2.3:a:jetbrains:ktor:*:*:*:*:*:*:*:*
More vulnerabilities in Jetbrains Ktor
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- CVE-2021-43203 — High (CVSS 7.5): In JetBrains Ktor before 1.6.4, nonce verification during the OAuth2 authentication process is implemented improperly.
- CVE-2023-45613 — Medium (CVSS 6.8): In JetBrains Ktor before 2.3.5 server certificates were not verified
All CVEs affecting Jetbrains Ktor →
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