{"id":"UBUNTU-CVE-2026-10705","details":"A flaw has been found in dask up to 3.0. Affected by this issue is the function nunique_approx of the file dask/dataframe/hyperloglog.py of the component HLL Handler. This manipulation causes resource consumption. The attack is possible to be carried out remotely. A high degree of complexity is needed for the attack. The exploitation is known to be difficult. The pull request to fix this issue awaits acceptance.","modified":"2026-06-12T09:04:03.412748355Z","published":"2026-06-03T02:16:00Z","upstream":["CVE-2026-10705"],"references":[{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2026-10705"},{"type":"REPORT","url":"https://www.cve.org/CVERecord?id=CVE-2026-10705"}],"affected":[{"package":{"name":"dask","ecosystem":"Ubuntu:18.04:LTS","purl":"pkg:deb/ubuntu/dask?arch=source&distro=bionic"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["0.15.1-3","0.15.4-1","0.16.0-1"],"ecosystem_specific":{"binaries":[{"binary_version":"0.16.0-1","binary_name":"python3-dask"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-10705.json"}},{"package":{"name":"dask","ecosystem":"Ubuntu:20.04:LTS","purl":"pkg:deb/ubuntu/dask?arch=source&distro=focal"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.0.0+dfsg-2","2.8.0-0ubuntu4","2.8.1+dfsg-0.2ubuntu1","2.8.1+dfsg-0.3","2.8.1+dfsg-0.4"],"ecosystem_specific":{"binaries":[{"binary_name":"python3-dask","binary_version":"2.8.1+dfsg-0.4"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-10705.json"}},{"package":{"name":"dask","ecosystem":"Ubuntu:22.04:LTS","purl":"pkg:deb/ubuntu/dask?arch=source&distro=jammy"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["2021.01.0+dfsg-1ubuntu1","2021.09.1+dfsg-1ubuntu1","2021.09.1+dfsg-1ubuntu2","2022.01.0+dfsg-1","2022.01.0+dfsg-1ubuntu1"],"ecosystem_specific":{"binaries":[{"binary_version":"2022.01.0+dfsg-1ubuntu1","binary_name":"python3-dask"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-10705.json"}},{"package":{"name":"dask","ecosystem":"Ubuntu:24.04:LTS","purl":"pkg:deb/ubuntu/dask?arch=source&distro=noble"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["2023.8.0+dfsg-2","2023.12.1+dfsg-2"],"ecosystem_specific":{"binaries":[{"binary_name":"python3-dask","binary_version":"2023.12.1+dfsg-2"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-10705.json"}},{"package":{"name":"dask","ecosystem":"Ubuntu:25.10","purl":"pkg:deb/ubuntu/dask?arch=source&distro=questing"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["2024.12.1+dfsg-2"],"ecosystem_specific":{"binaries":[{"binary_version":"2024.12.1+dfsg-2","binary_name":"python3-dask"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-10705.json"}},{"package":{"name":"dask","ecosystem":"Ubuntu:26.04:LTS","purl":"pkg:deb/ubuntu/dask?arch=source&distro=resolute"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["2024.12.1+dfsg-2","2024.12.1+dfsg-2build1"],"ecosystem_specific":{"binaries":[{"binary_name":"python3-dask","binary_version":"2024.12.1+dfsg-2build1"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-10705.json"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:L"},{"type":"CVSS_V4","score":"CVSS:4.0/AV:N/AC:H/AT:N/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N"},{"type":"Ubuntu","score":"medium"}]}