Bug 2494683 (CVE-2026-13593)

Summary: CVE-2026-13593 CSS::Minifier::XS: CSS::Minifier::XS: Memory leak via crafted input leading to Denial of Service
Product: [Other] Security Response Reporter: OSIDB Bzimport <bzimport>
Component: vulnerabilityAssignee: Product Security DevOps Team <prodsec-dev>
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Priority: medium    
Version: unspecifiedKeywords: Security
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OS: Linux   
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A flaw was found in CSS::Minifier::XS. This vulnerability causes a memory leak when the software processes a document containing only characters that are meant to be removed, such as comments and whitespace. If an attacker provides specially crafted input, it could lead to excessive memory usage, potentially resulting in a Denial of Service (DoS) by exhausting system resources.
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Bug Depends On: 2494733    
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Description OSIDB Bzimport 2026-06-29 21:02:45 UTC
CSS::Minifier::XS versions before 0.14 for Perl have a memory leak when the entire document is minified away.

The minify function has a memory leak when processing a document containing only characters to be removed, such as comments and whitespace.