CVE-2021-25762

MEDIUM 5.3CVE-2021-25762 · Published 03/02/2021 · updated 17/06/2026

In short

CVE-2021-25762 is a MEDIUM (CVSS 5.3) vulnerability affecting ktor (jetbrains).
Chance of exploitation in the next 30 days (EPSS): 0.82%, higher than 57.2% of all vulnerabilities.
Fix: update to 1.4.3 or later.

Package	Affected versions	Patched versions
ktor jetbrains	`< 1.4.3`	`1.4.3`

In JetBrains Ktor before 1.4.3, HTTP Request Smuggling was possible.

Running one of these products? Scan your site to see whether it exposes a vulnerable version.