Bug 2530810

Summary: CVE-2026-86776 keepass: KeePass: Denial of Service via crafted KDBX file [fedora-all]
Product: [Fedora] Fedora Reporter: Vladimir Vasilev <vvasilev>
Component: keepassAssignee: Julian Sikorski <belegdol>
Status: CLOSED NOTABUG QA Contact: Fedora Extras Quality Assurance <extras-qa>
Severity: medium Docs Contact:
Priority: medium    
Version: rawhideCC: belegdol, mailinglists, tilmann
Target Milestone: ---Keywords: Security, SecurityTracking
Target Release: ---   
Hardware: Unspecified   
OS: Unspecified   
Whiteboard: {"flaws": ["1d3827bf-0d6e-4fd2-aa8a-7ada23e17fe1"]}
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Last Closed: 2026-09-11 06:40:07 UTC Type: ---
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oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: --- Target Upstream Version:
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Bug Depends On:    
Bug Blocks: 2530660    

Description Vladimir Vasilev 2026-09-09 12:08:08 UTC 
Disclaimer: Community trackers are created by Red Hat Product Security team on a best effort basis. Package maintainers are required to ascertain if the flaw indeed affects their package, before starting the update process.

KeePass versions 2.35 through 2.61.1 fail to validate KDBX header field sizes before memory allocation in the ReadHeaderField function. Attackers can craft a malicious KDBX file declaring excessive header field lengths to trigger allocation of gigabytes of memory, causing the application to consume resources and terminate.
Comment 1 Julian Sikorski 2026-09-11 06:40:07 UTC 
This issue appears to be AI slop: https://keepass.info/help/kb/sec_issues.html#hdrfmem