CVE-2021-21293 describes an unbounded connection acceptance vulnerability in the blaze Scala library, particularly affecting servers running blaze-core before version 0.14.15 and http4s-blaze-server <= 0.21.16. This flaw allows an attacker to exhaust file handles by continuously accepting connections, even when the service is overloaded. Rated 7.5 HIGH (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H), it can lead to denial of service due to resource exhaustion, with low attack complexity and no authentication required. There is no evidence of active exploitation, public exploit code, or significant community discussion surrounding this vulnerability.
| Vendor | Product | Version(s) | CPE |
|---|---|---|---|
< 0.14.15CPE matchmatch criteria | cpe:2.3:a:typelevel:blaze:*:*:*:*:*:*:*:* |
CVSS version used by this source: 3.1
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.1 Mastodon, and 0.4 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.