CVE-2021-21399 json
Unauthenticated SubSonic backend access in Ampache
published 2021-04-13 5 y ago modified 2026-06-17 4 mo ago also EUVD-2021-8696
- cvss
- 9.1
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 1.4%
- EPSS 1.4% chance of exploitation in 30 days, percentile 73%
- public exploits
- 0
- none known
Summary
Ampache is a web based audio/video streaming application and file manager. Versions prior to 4.4.1 allow unauthenticated access to Ampache using the subsonic API. To successfully make the attack you must use a username that is not part of the site to bypass the auth checks. For more details and workaround guidance see the referenced GitHub security advisory.
Patch / fix
- ampache ampache 4.4.1
Exploit prediction
1.44% chance of exploitation in the next 30 days, higher than 73% of all scored CVEs (FIRST EPSS, 2026-11-08).
Exploits and checks
- github.com https://github.com/ampache/ampache/security/advisories/GHSA-p9pm-j95j-5mjf referenced PoC, tagged "exploit" by a source, unverified
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 3.1 | 9.1 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N |
| NVD | 3.1 | 7.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N |
| NVD | 2.0 | 5.0 | AV:N/AC:L/Au:N/C:P/I:N/A:N |
Affected products
- ampache ampache
Classification
References
-
github.com
/ampache/ampache/security/advisories/GHSA-p9pm-j95j-5mjf
exploit, mitigation, third-party-advisory
Sources
- CVE List CVE-2021-21399
- NVD CVE-2021-21399
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