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CVE-2026-46430

Algernon: Auto-refresh SSE event server binds to all interfaces by default on Linux/macOS PUBLISHED

Description (CNA)

Algernon is a small self-contained pure-Go web server. Prior to 1.17.7, the SSE event server bound to 0.0.0.0:5553 on Linux/macOS by default because the platform-dependent host default in engine/flags.go:39-46 set host = "" for non-Windows, and utils.JoinHostPort("", ":5553") resolves to ":5553". This vulnerability is fixed in 1.17.7.

Affected (CNA)

Vendor / productVersions
xyproto / algernonaffected < 1.17.7

CWE

CWE-668, CWE-1188

References

ADP enrichment

CISA-ADP

No English description supplied.