Resource exhaustion in Dask
CVE-2026-10705
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.
Vulnerability class: DoS (Denial of Service)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 3.1 (Low). Vector: CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:L.
EPSS exploit prediction
EPSS: 0.003 (19.1th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 19th percentile — 19.1% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.003 · newest: 0.003 · change: 0.000
Affected products
- Dask — versions 3.0
Weakness classification (CWE)
References
- vuldb.com/vuln/368018 (technical-description, vdb-entry)
- vuldb.com/vuln/368018/cti (signature, permissions-required)
- vuldb.com/cve/CVE-2026-10705 (third-party-advisory)
- vuldb.com/submit/831411 (third-party-advisory)
- github.com/dask/dask/issues/12403 (issue-tracking)
- github.com/dask/dask/pull/12401 (issue-tracking, patch)
- github.com/dask/dask/ (product)
Frequently asked questions
- What is CVE-2026-10705?
- CVE-2026-10705 is a low-severity vulnerability in Dask, classified under Uncontrolled Resource Consumption. CVSS score: 3.1/10. Published 2026-06-03.
- How severe is CVE-2026-10705?
- Low severity. CVSS v3 base score is 3.1 out of 10.