CVE-2021-41084 is a response-splitting or request-splitting vulnerability affecting http4s, an open-source Scala HTTP interface. It arises when untrusted user input is used in header names/values, status reason phrases, URI paths, or URI authority registered names. The vulnerability has a CVSS score of 4.7 (MEDIUM), indicating a network-based attack with low complexity, requiring user interaction, and potentially leading to low integrity impact. There is no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage.
| Vendor | Product | Version(s) | CPE |
|---|---|---|---|
< 0.21.29CPE matchmatch criteria | cpe:2.3:a:typelevel:http4s:*:*:*:*:*:*:*:* | ||
>= 0.22.0, < 0.22.5CPE matchmatch criteria | cpe:2.3:a:typelevel:http4s:*:*:*:*:*:*:*:* | ||
>= 0.23.0, < 0.23.4CPE matchmatch criteria | cpe:2.3:a:typelevel:http4s:*:*:*:*:*:*:*:* | ||
1.0.0CPE matchmatch criteria | cpe:2.3:a:typelevel:http4s:1.0.0:milestone1:*:*:*:*:*:* | ||
1.0.0CPE matchmatch criteria | cpe:2.3:a:typelevel:http4s:1.0.0:milestone10:*:*:*:*:*:* |
CVSS version used by this source: 3.1
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:N
The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.0 Mastodon, and 0.1 GitHub mentions.
No media coverage found for this CVE.
The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.