Bug 2563027 (CVE-2026-116134)

Summary: CVE-2026-116134 perl-http-body: perl-http-body: Denial of Service via unbounded multipart header block
Product: [Other] Security Response Reporter: OSIDB Bzimport <bzimport>
Component: vulnerabilityAssignee: Product Security DevOps Team <prodsec-dev>
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Priority: high    
Version: unspecifiedKeywords: Security
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OS: Linux   
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A flaw was found in perl-http-body. The multipart request parser does not restrict the size or number of lines within a part's header block before storing them in memory. A remote attacker can exploit this vulnerability by sending a specially crafted HTTP request with an excessively large multipart header block, leading to memory exhaustion and causing a Denial of Service (DoS).
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Bug Depends On: 2566092, 2566094, 2566096, 2566097    
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Description OSIDB Bzimport 2026-10-28 17:31:54 UTC 
HTTP::Body versions before 1.23_01 for Perl allow memory exhaustion via an unbounded multipart part header block.

The multipart parser takes everything up to the first blank line after a boundary as the part's header block, with no limit on its size or number of lines. Every line is stored in the part's header hash, so a block of short lines costs about 60 bytes of memory per input byte.

A remote attacker can exhaust worker memory with a single request.