Vulnerability DatabaseCVE-2026-46430
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CVE-2026-46430
Published:May 26, 2026
Updated:June 11, 2026
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 Packages
https://github.com/xyproto/algernon.git (GITHUB):
Affected version(s) >=v0.47-win8-64 <v1.17.7
Fix Suggestion:
Update to version v1.17.7
github.com/xyproto/algernon (GO):
Affected version(s) >=v0.0.0-20150310223114-90791373f0db <v1.17.7
Fix Suggestion:
Update to version v1.17.7
Related Resources (2)
https://github.com/xyproto/algernon
https://github.com/xyproto/algernon/security/advisories/GHSA-gj84-924c-48fx
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CVSS v4
Base Score:
5.3
Attack Vector
ADJACENT
Attack Complexity
LOW
Attack Requirements
NONE
Privileges Required
NONE
User Interaction
NONE
Vulnerable System Confidentiality
LOW
Vulnerable System Integrity
NONE
Vulnerable System Availability
NONE
Subsequent System Confidentiality
NONE
Subsequent System Integrity
NONE
Subsequent System Availability
NONE
CVSS v3
Base Score:
4.3
Attack Vector
ADJACENT
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
LOW
Integrity
NONE
Availability
NONE
Weakness Type (CWE)
Initialization of a Resource with an Insecure Default
CWE-1188
Exposure of Resource to Wrong Sphere
CWE-668
EPSS
Base Score:
0.01