CVE-2021-21402
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.
Does this matter?
EPSS puts the probability of exploitation in the next 30 days at 79.3%, higher than 100% of all known CVEs. Patch or mitigate before the next change window.
Description
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
- 6.5 MEDIUMCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
- EPSS
- 79.31% probability · 100th percentile
- Public exploits
- None in Exploit-DB
- CISA KEV
- Not listed
- Weakness
- CWE-22
- Affected
- jellyfin/jellyfin
- Source
- security-advisories@github.com
EPSS 79.3% since 26 October 2026; no change recorded yet. The dashed line is the ten per cent mark our analysts treat as “patch before the next change window”. Points are recorded when the score first appears and whenever it moves by a percentage point or more.
References
- https://github.com/jellyfin/jellyfin/commit/0183ef8e89195f420c48d2600bc0b72f6d3a7fd7Patch, Third Party Advisory
- https://github.com/jellyfin/jellyfin/releases/tag/v10.7.1Release Notes, Third Party Advisory
- https://github.com/jellyfin/jellyfin/security/advisories/GHSA-wg4c-c9g9-rxhxThird Party Advisory
- https://github.com/jellyfin/jellyfin/commit/0183ef8e89195f420c48d2600bc0b72f6d3a7fd7Patch, Third Party Advisory
- https://github.com/jellyfin/jellyfin/releases/tag/v10.7.1Release Notes, Third Party Advisory
- https://github.com/jellyfin/jellyfin/security/advisories/GHSA-wg4c-c9g9-rxhxThird Party Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.