{"answers":{"affected":"","exploited":"It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-86776 exists.","fix":"No fix has been published for CVE-2026-86776 yet. Limit exposure of the affected software until one is available.","what":"CVE-2026-86776 is a medium-severity denial of service vulnerability in KeePass, published on 9 Sep 2026. It can only be exploited from the same machine or local network, and only if a user opens a file or follows a link."},"fix_prompt":"Check this codebase for CVE-2026-86776 and fix it if it is affected.\n\nWhat it is: CVE-2026-86776 is a medium-severity denial of service vulnerability in KeePass, published on 9 Sep 2026. It can only be exploited from the same machine or local network, and only if a user opens a file or follows a link.\nExploitation: It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-86776 exists.\n\nAffected product: KeePass. No package-level version data is available, so check the vendor advisory linked from the reference page.\n\nTask:\n1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.\n2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.\n3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.\n4. Run the tests and summarise what changed and why.\n5. If nothing in the project is affected, say so and change nothing.\n\nReference: https://insights.sbomify.com/CVE-2026-86776/ (Markdown: https://insights.sbomify.com/CVE-2026-86776/index.md)","id":"CVE-2026-86776","markdown":"https://insights.sbomify.com/CVE-2026-86776/index.md","name":"CVE-2026-86776","record":{"aliases":["DEBIAN-CVE-2026-86776","GHSA-5r36-v86r-vm5x","UBUNTU-CVE-2026-86776"],"analysis":{"component_type":"desktop_application","fix_type":"upgrade","impacts":["denial_of_service"],"network_reachable":"adjacent_or_local","non_default_config":false,"product_category":"Password manager","requires_auth":"none","summary":"Attackers can cause denial of service in KeePass by crafting malicious KDBX files with excessive header field sizes, leading to memory exhaustion.","user_interaction":"required","vuln_class":"denial_of_service"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"VulnCheck","cpe":[],"cvss":{"score":4.6,"severity":"medium","source":"cna","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","version":"4.0"},"cwes":[{"id":"CWE-789","name":"Memory Allocation with Excessive Size Value"}],"description":"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.","ecosystems":[],"exploits":{"exploitdb":0,"first_seen":null,"github_poc":0,"max_poc_stars":null,"metasploit":0,"nuclei":0,"refs":[],"tier":"weaponised"},"has_fix":false,"headline":"KeePass 2.35 through 2.61.1 Memory Exhaustion via KDBX Header Field Size","id":"CVE-2026-86776","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":"denial_of_service","year":"2026"},"n_packages":0,"n_references":4,"next":{"headline":"AlchemyCMS before 7.4.16 and 8.x before 8.3.6 Missing Authorization on GET /api/nodes","id":"CVE-2026-86777"},"packages":[],"prev":{"headline":"knowns before 0.30.0 Path Traversal via Document API","id":"CVE-2026-86775"},"products":["KeePass"],"published":"2026-09-09","related":[],"sources":[{"class":"attribution","licence":"CVE Terms of Use (MITRE)","name":"CVE List","prefix":"CVE"},{"class":"attribution","licence":"CWE Terms of Use","name":"CWE (MITRE)"},{"class":"attribution","licence":"FIRST CVSS licence","name":"CVSS (FIRST)"}],"ssvc":{"automatable":"no","exploitation":"poc","technical_impact":"partial"},"state":"PUBLISHED","updated":"2026-09-10","vendors":["KeePass"]},"summary":"Attackers can cause denial of service in KeePass by crafting malicious KDBX files with excessive header field sizes, leading to memory exhaustion.","url":"https://insights.sbomify.com/CVE-2026-86776/"}