CVE-2026-33686: Sharp is Vulnerable to Path Traversal via Unsanitized Extension in FileUtil

March 25, 2026 (updated March 27, 2026)

A path traversal vulnerability exists in the FileUtil class of the code16/sharp package. The application fails to sanitize file extensions properly, allowing path separators to be passed into the storage layer.

References

github.com/advisories/GHSA-9ffq-6457-8958
github.com/code16/sharp
github.com/code16/sharp/pull/715
github.com/code16/sharp/security/advisories/GHSA-9ffq-6457-8958
nvd.nist.gov/vuln/detail/CVE-2026-33686

Code Behaviors & Features

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