Is CVE-2026-49342 actively exploited?

No active exploitation of CVE-2026-49342 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2026-49342 be exploited remotely?

Yes. CVE-2026-49342 is exploitable remotely over the network (CVSS attack vector: Network).

What is the CVSS score of CVE-2026-49342?

CVE-2026-49342 has a CVSS score of 5.3 (MEDIUM).

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MEDIUM

CVE-2026-49342

CWE-22Published: June 19, 2026· Updated: Jun 23, 2026

5.3

CVSS v3.1

Official Description

YARD is a documentation generation tool for the Ruby programming language. Prior to version 0.9.44, YARD's static cache lookup reads a request path before the router's path cleanup runs. When a server is configured with a document root, a traversal path such as `/../yard-cache-secret.html` is joined against that root and can return a readable sibling `.html` file outside the intended static tree. Version 0.9.44 patches the issue.

NVD Source

Technical Analysis

CVE-2026-49342 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

The vulnerability requires no privileges and no user interaction, making it a prime target for automated exploitation campaigns and worm-like propagation.