CVE-2026-10705
dask HLL hyperloglog.py nunique_approx resource consumption
- State
- Published
- Severity
- 2.3 Low
- Published
- Jun 3, 2026
- Updated
- Jun 3, 2026
- Reserved
- Jun 2, 2026
Description
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.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 4.0 | 2.3 Low | 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/E:X | VulDB |
| 3.1 | 3.1 Low | CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:L/E:X/RL:X/RC:R | VulDB |
| 3.0 | 3.1 Low | CVSS:3.0/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:L/E:X/RL:X/RC:R | VulDB |
| 2.0 | 2.1 Low | AV:N/AC:H/Au:S/C:N/I:N/A:P/E:ND/RL:ND/RC:UR | VulDB |
Weaknesses
Affected Products
| Product | Versions |
|---|---|
daskn/a |
|
References
- VDB-368018 | dask HLL hyperloglog.py nunique_approx resource consumptionvdb-entrytechnical-description
- VDB-368018 | CTI Indicators (IOB, IOC, TTP, IOA)signaturepermissions-required
- CVE-2026-10705 | CVE Analysis and Reportthird-party-advisory
- Submit #831411 | dask 2026.3.0 Algorithmic Complexity / Hash Collision / Denial of Servicethird-party-advisory
- https://github.com/dask/dask/issues/12403issue-tracking
- https://github.com/dask/dask/pull/12401issue-trackingpatch
- https://github.com/dask/dask/product
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