# CVE-2026-49340

## Summary

- **CVE ID:** CVE-2026-49340
- **Severity:** HIGH
- **CVSS Score:** 8.1 (CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H)
- **CWE:** CWE-22, CWE-697, CWE-732
- **Published:** Jun 19, 2026
- **Last Modified:** Jun 22, 2026

## Description

gonic is a music streaming server / free-software subsonic server API implementation. Prior to version 0.21.0, a logic error in `ServeCreateOrUpdatePlaylist` allows any authenticated Subsonic user (including non-admin) to write playlist M3U content to an attacker-controlled absolute filesystem path on the gonic host, and to create intermediate directories with `0o777` permissions. The bug is independent of CVE-2026-49338 and CVE-2026-49339. It is an unreachable guard clause combined with no path containment in `Store.Write`. Version 0.21.0 patches the issue.

## Affected Products

- sentriz — gonic (< 0.21.0)

## References

- [CNA](https://github.com/sentriz/gonic/security/advisories/GHSA-4gxv-p5g5-j7w7)

## Exploitation Prediction (EPSS)

- **EPSS Score:** 0.43%
- **EPSS Percentile:** 36.0

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_Exported from OnDuty AI Vulnerability Intelligence on 2026-09-10._