CVE Explorer
CVE-2026-49220
Jellyfin is an open source self hosted media server. Prior to 10.11.9, a potential XSS attack exists in Jellyfin which can allow a non-privileged user to execute arbitrary Javascript in the context of a logged-in Administrative user, resulting in numerous potential issues. The Client header during an AuthenticateByName can contain arbitrary HTML and Javascript, which will then be executed by the Administrative user when visiting the Access tab of the user in question from within the dashboard. T
Known exploited
Not asserted
Disputed
No
Stale source
No
Conflicts
0
Affected products and versions
1 source assertion{"product":"jellyfin","vendor":"jellyfin","versions":[{"status":"affected","version":"< 10.11.9"}]}
- cve_program_cvelist_v5affectedurn:baitaphish:normalized-source-record:v2:9c9602e6658c8494f221eb38b545181e30f00d714bbf5d98134ff4be2d87af9f · sha256:f9303fd444d052f9… · /containers/cna/affected/0
Provider-owned CVSS observations
1 source assertion{"metric":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"NONE","baseScore":5.7,"baseSeverity":"MEDIUM","confidentialityImpact":"HIGH","integrityImpact":"NONE","privilegesRequired":"LOW","scope":"UNCHANGED","userInteraction":"REQUIRED","vectorString":"CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:N/A:N","version":"3.1"},"metric_type":"cvssV3_1"}
- cve_program_cvelist_v5cvssurn:baitaphish:normalized-source-record:v2:9c9602e6658c8494f221eb38b545181e30f00d714bbf5d98134ff4be2d87af9f · sha256:f9303fd444d052f9… · /containers/cna/metrics/0/cvssV3_1
CWE assertions
1 source assertion{"cweId":"CWE-79","description":"CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')","lang":"en","type":"CWE"}
- cve_program_cvelist_v5cweurn:baitaphish:normalized-source-record:v2:9c9602e6658c8494f221eb38b545181e30f00d714bbf5d98134ff4be2d87af9f · sha256:f9303fd444d052f9… · /containers/cna/problemTypes/0/descriptions/0
Source references
1 source assertion{"name":"https://github.com/jellyfin/jellyfin/security/advisories/GHSA-fv79-gmhx-xh2v","tags":["x_refsource_CONFIRM"],"url":"https://github.com/jellyfin/jellyfin/security/advisories/GHSA-fv79-gmhx-xh2v"}
- cve_program_cvelist_v5referenceurn:baitaphish:normalized-source-record:v2:9c9602e6658c8494f221eb38b545181e30f00d714bbf5d98134ff4be2d87af9f · sha256:f9303fd444d052f9… · /containers/cna/references/0
Attribution and limitations
- CVE Program CVEList V5: Reproduce the MITRE copyright designation and CVE license in copies. Source →
Provider severity values are preserved separately. Baitaphish does not convert them into a risk rating, infer affected products, or treat EPSS as observed exploitation.