CVE-2026-86776
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.
Scoring
- Severity
- MEDIUM
- CVSS base score
- 4.6
- CVSS vector
- CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N
- CWE
- CWE-789
- Published
- 2026-09-09
- Last modified
- 2026-09-09
Affected products
- KeePass KeePass
Weakness type
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