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CVE-2026-86776

KeePass 2.35 through 2.61.1 Memory Exhaustion via KDBX Header Field Size

CVSS 3.1 3.3 LOWCVSS 4.0 4.6 MEDIUMCheck source for fixed versionsKEV status unknown
Original advisory

cve-program · CVE-2026-86776

Published

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.

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Affected versions, risk and source history

Related advisories and sources

Publishers link these advisories through the identifiers shown below. A shared identifier or date alone does not tell you whether your software is affected or whether the advisories describe the same cause.

CVE-2026-86776 · CVE overview and exploitation status

cve-program · CVE-2026-86776

Related changes

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ChangeIntel

An IT change radar: releases, security, known issues, retirements, documentation changes, and service status from public sources. Every item links to supporting evidence; dates and statuses can change after they are read.

Sources read 15 Nov 03:49 UTC · 252 of 275 readable · 247 fully read · documentation 469/469 current

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