CVE-2021-41816 is a critical integer overflow and resultant buffer overflow vulnerability in CGI.escape_html affecting Ruby versions before 2.7.5 and 3.x before 3.0.3, as well as the CGI gem before 0.3.1. This flaw, particularly impactful on platforms where size_t and long differ in size, allows for remote code execution with a CVSS score of 9.8. Despite its critical severity, there is no known active exploitation, public exploit code, or significant community discussion surrounding this vulnerability.
| Vendor | Product | Version(s) | CPE |
|---|---|---|---|
< 0.3.1CPE matchmatch criteria | cpe:2.3:a:ruby-lang:cgi:*:*:*:*:*:ruby:*:* | ||
<= 0.2.0CPE matchmatch criteria | cpe:2.3:a:ruby-lang:cgi:*:*:*:*:*:ruby:*:* | ||
<= 0.1.0CPE matchmatch criteria | cpe:2.3:a:ruby-lang:cgi:*:*:*:*:*:ruby:*:* | ||
34CPE matchmatch criteria | cpe:2.3:o:fedoraproject:fedora:34:*:*:*:*:*:*:* | ||
35CPE matchmatch criteria | cpe:2.3:o:fedoraproject:fedora:35:*:*:*:*:*:*:* |
CVSS version used by this source: 3.1
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.3 Bluesky, 0.3 Mastodon, and 2.4 GitHub mentions.
No media coverage found for this CVE.
The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.