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CVE-2026-77385

4.3 · MEDIUM

Kyoo is a self-hosted media server focused on movies, series, and anime.

Published Sep 18, 2026CWE-639EPSS 0.34%

Overview

CVE-2026-77385 is a medium-severity vulnerability. It was published on September 18, 2026 and has a CVSS 3.1 base score of 4.3 (MEDIUM).

This vulnerability has a CVSS 3.1 base score of 4.3, rated MEDIUM. It can be exploited remotely over the network. Some level of privileges is required for exploitation.

Technical 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.

Remediation

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

References

GitHubgithub.com/zoriya/Kyoo/commit/c542adb5dc6d681e6491b28b5ac618c35c446d91GitHubgithub.com/zoriya/Kyoo/pull/1577GitHubgithub.com/zoriya/Kyoo/releases/tag/v5.1.0GitHubgithub.com/zoriya/Kyoo/security/advisories/GHSA-fc8v-vr3q-hc46GitHubgithub.com/zoriya/Kyoo/security/advisories/GHSA-fc8v-vr3q-hc46

How CyberStrike helps

Frequently asked questions

What is CVE-2026-77385?

CVE-2026-77385 is a medium-severity vulnerability. It was published on September 18, 2026 and has a CVSS 3.1 base score of 4.3 (MEDIUM).

How severe is CVE-2026-77385?

This vulnerability has a CVSS 3.1 base score of 4.3, rated MEDIUM. It can be exploited remotely over the network. Some level of privileges is required for exploitation.

How do I fix or remediate CVE-2026-77385?

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

How can CyberStrike help with CVE-2026-77385?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2026-77385 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.

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