CVE-2021-29460 describes a stored Cross-Site Scripting (XSS) vulnerability in Kirby CMS, affecting versions prior to 3.5.4. An authenticated editor with write access to the Kirby Panel can upload a malicious SVG file containing script tags. If a logged-in user subsequently opens a direct link to this SVG, the script executes in their browser, potentially leading to privilege escalation or other JavaScript-powered attacks. The vulnerability has a CVSS score of 5.4 (Medium), indicating a network-based attack with low privileges required, but user interaction is necessary. The impact is limited to confidentiality and integrity, with no availability impact. While not actively exploited in the wild, an exploit (EDB-49808) is publicly available, and the vulnerability has received minimal community discussion or media coverage.
| Vendor | Product | Version(s) | CPE |
|---|---|---|---|
< 3.5.4CPE matchmatch criteria | cpe:2.3:a:getkirby:kirby:*:*:*:*:*:*:*:* |
CVSS version used by this source: 3.1
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:L/A:N
The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.0 Bluesky, 0.0 Mastodon, and 0.1 GitHub mentions.
No media coverage found for this CVE.
The average CVE in this peer group has 0.0 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.