CVE-2026-46431

Algernon is a small self-contained pure-Go web server. Prior to 1.17.7, the SSE event server's Access-Control-Allow-Origin response header was hardcoded to the wildcard regardless of the caller's Origin. Because EventSource does not preflight and does not send cookies, the wildcard is sufficient ...

CVE-2026-46430

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"...

CVE-2026-45721

Algernon is a small self-contained pure-Go web server. Prior to 1.17.7, when Algernon is asked for any URL path that resolves to a directory without an index file, DirPage walks upward through parent directories — past the configured server root — looking for a file named handler.lua to execute a...

CVE-2026-46431 Algernon: Auto-refresh SSE event server sets Access-Control-Allow-Origin: *

Algernon is a small self-contained pure-Go web server. Prior to 1.17.7, the SSE event server's Access-Control-Allow-Origin response header was hardcoded to the wildcard regardless of the caller's Origin. Because EventSource does not preflight and does not send cookies, the wildcard is sufficient ...

CVE-2026-46431 Algernon: Auto-refresh SSE event server sets Access-Control-Allow-Origin: *

Algernon is a small self-contained pure-Go web server. Prior to 1.17.7, the SSE event server's Access-Control-Allow-Origin response header was hardcoded to the wildcard regardless of the caller's Origin. Because EventSource does not preflight and does not send cookies, the wildcard is sufficient ...

CVE-2026-46431

Algernon is a small self-contained pure-Go web server. Prior to 1.17.7, the SSE event server's Access-Control-Allow-Origin response header was hardcoded to the wildcard regardless of the caller's Origin. Because EventSource does not preflight and does not send cookies, the wildcard is sufficient ...

EUVD-2026-31870

Algernon is a small self-contained pure-Go web server. Prior to 1.17.7, the SSE event server's Access-Control-Allow-Origin response header was hardcoded to the wildcard regardless of the caller's Origin. Because EventSource does not preflight and does not send cookies, the wildcard is sufficient ...

CVE-2026-46430

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"...

CVE-2026-46430

CVE-2026-46430 affects Algernon (SSE event server). Before 1.17.7, the SSE event server bound to 0.0.0.0:5553 by default on Linux/macOS due to host default logic, enabling LAN-wide access. The issue arises from platform-dependent default host handling (empty on non-Windows), resulting in an effec...

CVE-2026-46430 Algernon: Auto-refresh SSE event server binds to all interfaces by default on Linux/macOS

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"...

CVE-2026-45728 Algernon: Single-file mode unconditionally enables debug mode

Algernon is a small self-contained pure-Go web server. Prior to 1.17.7, when Algernon is invoked with a single file path instead of a directory, singleFileMode is set to true and debugMode is forcibly enabled. debugMode activates the PrettyError renderer, which on any Lua or template error respon...

CVE-2026-45728 Algernon: Single-file mode unconditionally enables debug mode

Algernon is a small self-contained pure-Go web server. Prior to 1.17.7, when Algernon is invoked with a single file path instead of a directory, singleFileMode is set to true and debugMode is forcibly enabled. debugMode activates the PrettyError renderer, which on any Lua or template error respon...

EUVD-2026-31868

Algernon is a small self-contained pure-Go web server. Prior to 1.17.7, when Algernon is invoked with a single file path instead of a directory, singleFileMode is set to true and debugMode is forcibly enabled. debugMode activates the PrettyError renderer, which on any Lua or template error respon...

CVE-2026-45721

CVE-2026-45721 (Algernon) describes a pre-auth remote code execution in Algernon web server prior to version 1.17.7. When a request targets a directory without an index, DirPage behavior walks upward through parent directories past the configured server root in search of a file named handler.lua....

EUVD-2026-31867

Algernon is a small self-contained pure-Go web server. Prior to 1.17.7, when Algernon is asked for any URL path that resolves to a directory without an index file, DirPage walks upward through parent directories — past the configured server root — looking for a file named handler.lua to execute a...

CVE-2026-45721 Algernon: handler.lua discovery walks parent directories above the server root

Algernon is a small self-contained pure-Go web server. Prior to 1.17.7, when Algernon is asked for any URL path that resolves to a directory without an index file, DirPage walks upward through parent directories — past the configured server root — looking for a file named handler.lua to execute a...

algernon 安全漏洞

Algernon is a web server developed by Alexander F. Rødseth. Versions of Algernon prior to 1.17.7 contained a security vulnerability. This vulnerability stemmed from the hardcoded wildcard in the Access-Control-Allow-Origin header of the SSE event server, which could allow any third-party page to...

Security Bulletin: Expr Built-in Functions Recursion DoS Vulnerability (Fixed in v1.17.7) affects watsonx.data

Summary Expr prior to v1.17.7 is vulnerable to a Denial-of-Service DoS due to unbounded recursion in certain built-in functions, which can cause stack overflow and application crashes when processing deeply nested or cyclic data. Fixed in v1.17.7. This can affect watsonx.data. Vulnerability Detai...

Linux Distros Unpatched Vulnerability : CVE-2025-68156

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - Expr is an expression language and expression evaluation for Go. Prior to version 1.17.7, several builtin functions in Expr, including flatten, min, max, mean,...

EUVD-2025-203831

Expr has Denial of Service via Unbounded Recursion in Builtin Functions...