CVE-2026-49340Public exploitNetwork attack vector

Authenticated arbitrary file overwrite via playlist path traversal

Published Jun 19, 2026 · Updated Jun 19, 2026

Path traversal in sentriz gonic before 0.21.0 allows remote authenticated users to overwrite host files via a crafted playlist ID. ServeCreateOrUpdatePlaylist leaves ownership data zeroed because its read-success branch tests an impossible error-and-value condition, while Store.Write joins the decoded ID without path containment. Any Subsonic account, including a non-admin user, can truncate and rewrite files writable by the gonic process with M3U-structured content.

CVSS severity8.1
High
EPSS probability0.43%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Path traversal in sentriz gonic before 0.21.0 allows remote authenticated users to overwrite host files via a crafted playlist ID. ServeCreateOrUpdatePlaylist leaves ownership data zeroed because its read-success branch tests an impossible error-and-value condition, while Store.Write joins the decoded ID without path containment. Any Subsonic account, including a non-admin user, can truncate and rewrite files writable by the gonic process with M3U-structured content.

The record

CVE
CVE-2026-49340
Published
Jun 19, 2026
Updated
Jun 19, 2026
Vendor
sentriz
Product
gonic
Classifications
CWE-697, CWE-22, CWE-732, T1565.001
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Jun 19, 2026CVE publishedPublication date reported by the CVE source.
  2. Jun 19, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=< 0.21.0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

sentriz · gonicversion=< 0.21.0

Published CVSS scores

8.1GitHubCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-697Incorrect Comparison
CWE-22Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
CWE-732Incorrect Permission Assignment for Critical Resource
T1565.001Stored Data Manipulation

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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