Bug 2540251 (CVE-2026-88358)

Summary: CVE-2026-88358 simdjson: simdjson: Denial of Service via crafted truncated JSON document
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: unspecifiedKeywords: Security
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Hardware: All   
OS: Linux   
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A flaw was found in simdjson. An attacker can cause a Denial of Service (DoS) by providing a specially crafted, truncated JSON document to an application using the library. During processing, the parser accesses memory beyond the input buffer, causing the application to crash unexpectedly.
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oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
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Bug Depends On: 2543057, 2543058    
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Description OSIDB Bzimport 2026-09-24 15:54:19 UTC 
simdjson 4.6.1 contains a one-byte out-of-bounds read vulnerability in dom::parser::parse_unpadded(). A specially crafted truncated JSON document whose final structural token closes a nested array or object can cause json_iterator::walk_document() to access buf[len] after the input buffer has been exhausted. This results in a heap out-of-bounds read and may cause application termination, leading to denial of service.