CVE-2021-21402 is a path traversal vulnerability affecting Jellyfin versions prior to 10.7.1, allowing authenticated attackers to read arbitrary files from the server's file system through specially crafted requests. This medium-severity vulnerability (CVSS 6.5) has a low attack complexity and can lead to high confidentiality impact, particularly on Windows hosts and publicly exposed servers. While not actively exploited in the wild, exploit code is publicly available via Nuclei templates, and its high EPSS score (0.9275) indicates a significant likelihood of future exploitation. Community discussion and media coverage for this CVE are minimal.
| Vendor | Product | Version(s) | CPE |
|---|---|---|---|
< 10.7.1CPE matchmatch criteria | cpe:2.3:a:jellyfin:jellyfin:*:*:*:*:*:*:*:* |
CVSS version used by this source: 3.1
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/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 0.0 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.