CVE-2021-40906 is a Reflected Cross-Site Scripting (XSS) vulnerability affecting CheckMK Raw Edition software versions 1.5.0 to 1.6.0, stemming from unsanitized input in an unauthenticated web service parameter. This medium-severity vulnerability (CVSS 6.1) allows an unauthenticated attacker to inject malicious HTML or client-side scripts, potentially leading to backdoor creation or session cookie theft if a user is authenticated. While the attack complexity is low, successful exploitation requires user interaction (UI:R) and access to the web service. 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 |
|---|---|---|---|
>= 1.5.0, < 1.6.0CPE matchmatch criteria | cpe:2.3:a:checkmk:checkmk:*:*:*:*:*:*:*:* | ||
1.6.0CPE matchmatch criteria | cpe:2.3:a:checkmk:checkmk:1.6.0:-:*:*:*:*:*:* | ||
1.6.0CPE matchmatch criteria | cpe:2.3:a:checkmk:checkmk:1.6.0:b1:*:*:*:*:*:* | ||
1.6.0CPE matchmatch criteria | cpe:2.3:a:checkmk:checkmk:1.6.0:b10:*:*:*:*:*:* | ||
1.6.0CPE matchmatch criteria | cpe:2.3:a:checkmk:checkmk:1.6.0:b12:*:*:*:*:*:* |
CVSS version used by this source: 3.1
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/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.
Remediation records are not available for this CVE.