Bug 2552264 (CVE-2026-110263)

Summary: CVE-2026-110263 org.ow2.asm/asm: OW2 ASM: Denial of Service via uncontrolled recursion in SignatureReader
Product: [Other] Security Response Reporter: OSIDB Bzimport <bzimport>
Component: vulnerabilityAssignee: Product Security DevOps Team <prodsec-dev>
Status: NEW --- QA Contact:
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Priority: medium    
Version: unspecifiedKeywords: Security
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Hardware: All   
OS: Linux   
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A flaw was found in OW2 ASM. An attacker could cause a Denial of Service (DoS) by providing a specially crafted Java class file containing deeply nested generic type signatures. When the library parses these signatures using the SignatureReader component, uncontrolled recursion exhausts available stack memory, resulting in an application crash.
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Description OSIDB Bzimport 2026-10-14 14:33:37 UTC
OW2 ASM 3.0 before 9.11 contains an uncontrolled recursion vulnerability in SignatureReader.parseType() that allows attackers to exhaust the stack via deeply nested generic type signatures. Attackers can supply a crafted class file with a long Signature attribute containing many nested type arguments to trigger a StackOverflowError during class transformation, causing denial of service.