Incorrect Permission Assignment for Critical Resource 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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- published7 Jul 2026
- disclosed26 Jun 2026
- creditUnknown
Introduced: 26 Jun 2026
CVE-2026-49340 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 Incorrect Permission Assignment for Critical Resource via the ServeCreateOrUpdatePlaylist process. An attacker can overwrite or create arbitrary files on the host system by supplying a crafted playlist ID that resolves to an attacker-controlled path, leading to potential destruction of application data or configuration files. This is possible because the path containment check is missing and directory permissions are set to world-writable, allowing any authenticated user to write outside the intended directory structure.