CVE-2021-21402highobserved exploitationCWE-22

CVE-2021-21402: high-severity vulnerability in jellyfin

Unauthenticated Arbitrary File Access in Jellyfin

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100Vexday Risk Score

Patch now. It exploitation observed by VulnCheck and has a working public exploit.

ssvc Actcvss 7.7epss 79%
from disclosure to weapon17 days
Published on NVDMar 23
1st PoC+17d
VulnCheck+965d
Jellyfin is a Free Software Media System. In Jellyfin before version 10.7.1, with certain endpoints, well crafted requests will allow arbitrary file read from a Jellyfin server's file system. This issue is more prevalent when Windows is used as the host OS. Servers that are exposed to the public Internet are potentially at risk. This is fixed in version 10.7.1. As a workaround, users may be able to restrict some access by enforcing strict security permissions on their filesystem, however, it is recommended to update as soon as possible.
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N
Affected products
jellyfin · jellyfin
⚠ Public resources, to assess the exposure of systems you control or are authorized to test. Test only with authorization.
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