CVE-2019-19389 json
JetBrains Ktor framework before version 1.2.6 was vulnerable to HTTP Response Splitting.
published 2019-12-26 6 y ago modified 2026-06-17 4 mo ago also EUVD-2019-9010
- cvss
- 5.4
- version 3.1, NVD
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.8%
- EPSS 0.8% chance of exploitation in 30 days, percentile 57%
- public exploits
- 0
- none known
Summary
JetBrains Ktor framework before version 1.2.6 was vulnerable to HTTP Response Splitting.
Patch / fix
Exploit prediction
0.83% chance of exploitation in the next 30 days, higher than 57% of all scored CVEs (FIRST EPSS, 2026-11-08).
Exploits and checks
- gist.github.com https://gist.github.com/JLLeitschuh/6792947ed57d589b08c1cc8b666c7737 referenced PoC, tagged "exploit" by a source, unverified
- twitter.com https://twitter.com/JLLeitschuh/status/1210256191110230017?s=20 referenced PoC, tagged "exploit" by a source, unverified
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| NVD | 3.1 | 5.4 | CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N |
| NVD | 2.0 | 3.5 | AV:N/AC:M/Au:S/C:N/I:P/A:N |
Classification
- Weakness
-
- CWE-74 Improper Neutralization of Special Elements in Output Used by a Downstream Component
References
-
github.com
/ktorio/ktor/pull/1408
mitigation, patch, third-party-advisory
-
gist.github.com
/JLLeitschuh/6792947ed57d589b08c1cc8b666c7737
exploit, third-party-advisory
-
twitter.com
/JLLeitschuh/status/1210256191110230017?s=20
exploit, third-party-advisory
Sources
- CVE List CVE-2019-19389
- NVD CVE-2019-19389
Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.