Bug 2490894 (CVE-2026-49342)

Summary: CVE-2026-49342 yard: YARD: Information disclosure via path traversal in static cache lookup
Product: [Other] Security Response Reporter: OSIDB Bzimport <bzimport>
Component: vulnerabilityAssignee: Product Security DevOps Team <prodsec-dev>
Status: NEW --- QA Contact:
Severity: medium Docs Contact:
Priority: medium    
Version: unspecifiedCC: akostadi, amasferr, dmayorov, jlledo, pantinor, tsedmik
Target Milestone: ---Keywords: Security
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Hardware: All   
OS: Linux   
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A flaw was found in YARD, a documentation generation tool for the Ruby programming language. A remote attacker could exploit a path traversal vulnerability in YARD's static cache lookup. This occurs because the request path is read before the router's path cleanup, allowing a specially crafted request to access and read arbitrary .html files outside the intended static directory when a server is configured with a document root. This could lead to information disclosure.
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oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
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Description OSIDB Bzimport 2026-06-19 20:01:07 UTC
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.