CVE-2021-4249 is a problematic vulnerability affecting the haskell xml-conduit library, specifically within the DOCTYPE Entity Expansion Handler in xml-conduit/src/Text/XML/Stream/Parse.hs. This flaw allows for an infinite loop due to improper handling of XML entities. With a CVSS score of 7.5 (HIGH), this vulnerability can be exploited remotely without user interaction, leading to a denial of service (availability impact). The attack complexity is low, making it relatively easy to exploit. There is currently no evidence of active exploitation, and no public exploit code is available in Metasploit, Nuclei, or ExploitDB. Community discussion and media coverage for this CVE are minimal.
| Vendor | Product | Version(s) | CPE |
|---|---|---|---|
< 1.9.1.0CPE matchmatch criteria | cpe:2.3:a:haskell:xml-conduit:*:*:*:*:*:*:*:* |
CVSS version used by this source: 3.1
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L
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.