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CVE-2026-43982

Algernon is a small self-contained pure-Go web server

Published: 2026-05-26 · Last updated: 2026-05-26

Severity and scoring

CWE
CWE-22

Description

Algernon is a small self-contained pure-Go web server. Prior to 1.17.6, uploadedFileSaveIn() in lua/upload/upload.go uses filepath.Join() with the caller-supplied directory but performs no boundary check after joining. A directory of ../../../tmp resolves cleanly to /tmp, outside the web root. This vulnerability is fixed in 1.17.6.

Source: NVD

References

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