Is CVE-2026-49340 actively exploited?

No active exploitation of CVE-2026-49340 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2026-49340 be exploited remotely?

Yes. CVE-2026-49340 is exploitable remotely over the network (CVSS attack vector: Network).

What is the CVSS score of CVE-2026-49340?

CVE-2026-49340 has a CVSS score of 8.1 (HIGH).

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HIGH

CVE-2026-49340

CWE-22Published: June 19, 2026· Updated: Jun 23, 2026

8.1

CVSS v3.1

Official 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.

NVD Source

Technical Analysis

CVE-2026-49340 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

Exploitation requires low privileges, which limits the exposure to scenarios where an attacker has already gained initial access.

A successful exploit results in full integrity compromise (data manipulation), availability disruption (denial of service), with a CVSS base score of 8.1.