Bug 2533548 (CVE-2026-91752)

Summary: CVE-2026-91752 libextractor: libextractor: Denial of Service via malicious StarOffice documents
Product: [Other] Security Response Reporter: OSIDB Bzimport <bzimport>
Component: vulnerabilityAssignee: Product Security DevOps Team <prodsec-dev>
Status: NEW --- QA Contact:
Severity: high Docs Contact:
Priority: high    
Version: unspecifiedKeywords: Security
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Hardware: All   
OS: Linux   
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A flaw was found in libextractor. This stack-based buffer overflow vulnerability in the `process_star_office` function allows attackers to craft malicious StarOffice documents. When processed, these documents can cause a large allocation on the stack, leading to a stack overflow and crashing any application extracting metadata. This can result in a denial of service.
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Description OSIDB Bzimport 2026-09-15 00:51:31 UTC 
GNU libextractor before 1.15 contains a stack-based buffer overflow vulnerability in the process_star_office function that sizes a variable-length stack array from attacker-controlled OLE2 stream data. Attackers can craft malicious StarOffice documents that allocate up to 4 MB on the stack, causing stack overflow and crashing any application extracting metadata from the document.