GEM · JULY 2026 · EARLY WARNING

guard-livereload Ruby Gem Directory Traversal Vulnerability Under Investigation

EARLY WARNING · UNCONFIRMED. This page describes a developing threat that 0Day surfaced from early signals and has not yet independently confirmed. Details may change. Always verify against the primary sources before acting.
GHSA-G65V-27R3-5P6MSeverity: HIGH

The guard-livereload Ruby gem reportedly has a directory traversal vulnerability that may allow remote attackers to read arbitrary files on the server. This issue is under investigation.

What happened

An early warning has been issued regarding a directory traversal vulnerability in the guard-livereload Ruby gem. This vulnerability, tracked as GHSA-G65V-27R3-5P6M, appears to allow remote attackers to read arbitrary files on the server. The vulnerability is present in versions of guard-livereload prior to 2.5.2. It is recommended to upgrade to version 2.5.2 or later to mitigate potential risks. For more detailed information, consult the primary sources linked in the summary.

How 0Day mitigates this

MATCHED TO YOUR ACTUAL DEPENDENCY GRAPH0Day matches every incoming threat signal against your GitHub organization’s full dependency graph, including transitive dependencies. If guard-livereload is anywhere in your dependency tree, the engineers who own the affected repositories get a push alert the moment it is flagged — no manual audit to remember to run.

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