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Vulnerability · Published Jun 3, 2026 · Assigned by VulDB

CVE-2026-10705dask HLL hyperloglog.py nunique_approx resource consumption

Low 3.1

In plain English

A low-severity uncontrolled resource consumption in dask. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.3% (higher than 21% of all known vulnerabilities).

Severity (CVSS 3.1)3.1Low
Exploit odds (30 days)0.3%top 78.7% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known

Official 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.

Affected packages & fixed versions

EcosystemPackageFixed inAdvisory
Debian:12daskno fix listedDEBIAN-CVE-2026-10705
Debian:13daskno fix listedDEBIAN-CVE-2026-10705
Debian:14daskno fix listedDEBIAN-CVE-2026-10705
Ubuntu:22.04:LTSdaskno fix listedUBUNTU-CVE-2026-10705
Ubuntu:24.04:LTSdaskno fix listedUBUNTU-CVE-2026-10705
Ubuntu:25.10daskno fix listedUBUNTU-CVE-2026-10705
Ubuntu:26.04:LTSdaskno fix listedUBUNTU-CVE-2026-10705
Ubuntu:26.10daskno fix listedUBUNTU-CVE-2026-10705

Affected products (as reported)

VendorProductVersions
n/a dask 3.0

Weakness: CWE-400, CWE-404 · Vector: 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

References