CVE-2021-25762: jetbrains ktor HTTP Request/Response Smuggling
CVSS: 5.3v3.1MediumModified
Published 03-02-2021Last modified 03-08-2024
Vulnerability summary
CVE-2021-25762 is a medium (CVSS 5.3) HTTP Request/Response Smuggling vulnerability in jetbrains ktor. EPSS estimates a 0.81% chance of exploitation in the next 30 days, higher than 56.1% of scored vulnerabilities.
CVSS score
5.3/10
010
Medium · v3.1 (NVD)EPSS score
0.81%
0%100%
Low · 0.00 pp in 30 daysKEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded
Timeline
- 03-02-2021PublishedVulnerability first disclosed.
- 03-08-2024Last modifiedVulnerability information updated.
Description
In JetBrains Ktor before 1.4.3, HTTP Request Smuggling was possible.
CVSS metrics
2 scores · 1 source · 2 versionsMedium 5.3Preferred score · NVD (NIST)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:NSourcesSingle source
Medium 5.0Preferred score · NVD (NIST)
AV:N/AC:L/Au:N/C:N/I:P/A:NSourcesSingle source
EPSS trend
Probability
0.81%
Chance of exploitation in the next 30 days
Percentile
56%
Versus all other CVEs
30-day change
0.00 pp
From 0.81% on 19-09-2026
19-09-202619-10-2026
EPSS score0.81%
Known exploited
Compare KEV catalogsNot in any of the 3 tracked catalogs.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root causeAffected systems
Jetbrains1 product
- ktor< 1.4.3
1 vendor · 1 product
References
2 links- blog.jetbrains.com/blog/2021/02/03/jetbrains-security-bulletin-q4-2020/X Refsource MISCVendor Advisory