CVEvulnerability

CVE-2026-45728

7.5 HIGH Published 2026-05-26 Modified 2026-07-24 Official page ↗
Status
Deferred
Published
2026-05-26
Last modified
2026-07-24
Assigner
[email protected]
CVSS 3.1 ([email protected])
7.5 HIGH — CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Weaknesses
CWE-1188, CWE-209, CWE-489, CWE-540

Description

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 response dumps the absolute path of the file that errored, complete byte contents of that file, and exception or parser error text. This response is served with HTTP 200 OK to whoever sent the request that triggered the error. Any client able to reach the server and able to provoke a runtime error in the served script obtains the full server-side source of that script and of any sibling Lua data file consulted during the request. This vulnerability is fixed in 1.17.7.

Related

Weakness · CWE (4)

  • CWE-1188 Initialization of a Resource with an Insecure Default weakness
  • CWE-209 Generation of Error Message Containing Sensitive Information weakness
  • CWE-489 Active Debug Code weakness
  • CWE-540 Inclusion of Sensitive Information in Source Code weakness

References