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CVE-2026-77385— Kyoo: Transcoder serves uncataloged files from the media directory

Quick assessment

Affected
zoriya Kyoo
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Kyoo is a self-hosted media server focused on movies, series, and anime. Prior to 5.1.0, a registered user with the core.play permission could supply a base64-encoded filesystem path to the transcoder. The path handling in transcoder/src/api/path.go cleaned th

CVSS 4.3 · Medium

Affected Version Matrix 1

VendorProduct Version RangeStatus
zoriya Kyoo < 5.1.0 affected
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I. Basic Information for CVE-2026-77385

Vulnerability Information

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Vulnerability Title
Kyoo: Transcoder serves uncataloged files from the media directory
Source: CVE Program / CVE List V5
Vulnerability Description
Kyoo is a self-hosted media server focused on movies, series, and anime. Prior to 5.1.0, a registered user with the core.play permission could supply a base64-encoded filesystem path to the transcoder. The path handling in transcoder/src/api/path.go cleaned the value and checked only that it began with Settings.SafePath before getHash processed it, while transcoder/src/api/streams.go served the accepted path without verifying a Kyoo catalog record. This missing catalog-level authorization allowed the user to retrieve hidden, temporary, operational, or other uncataloged files beneath the media directory when the path was known or guessed. This vulnerability is fixed in 5.1.0.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
通过用户控制密钥绕过授权机制
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
zoriya Kyoo < 5.1.0 -

II. Public POCs for CVE-2026-77385

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III. Intelligence Information for CVE-2026-77385

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Patches & Fixes for CVE-2026-77385 (2)

Other References for CVE-2026-77385 (2)

IV. Related Vulnerabilities

Same product: Kyoo
Same vendor: zoriya
Same weakness: CWE-639

V. Comments for CVE-2026-77385

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