Authorization Bypass Through User-Controlled Key Affecting go.senan.xyz/gonic/fileutil package, versions <0.21.0
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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Start learning- Snyk IDSNYK-GOLANG-GOSENANXYZGONICFILEUTIL-17750794
- published7 Jul 2026
- disclosed26 Jun 2026
- creditUnknown
Introduced: 26 Jun 2026
CVE-2026-49339 Â (opens in a new tab)How to fix?
Upgrade go.senan.xyz/gonic/fileutil to version 0.21.0 or higher.
Overview
Affected versions of this package are vulnerable to Authorization Bypass Through User-Controlled Key via the id parameter in playlist operations. An attacker can access or delete other users' playlists, and probe for the existence of arbitrary files by supplying a crafted base64-encoded value containing path traversal sequences. This allows bypassing ownership checks and escaping the intended directory containment.