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DEBIAN-CVE-2026-23528

Type: advisorySource: OSV1 source record

Dask distributed is a distributed task scheduler for Dask. Prior to 2026.1.0, when Jupyter Lab, jupyter-server-proxy, and Dask distributed are all run together, it is possible to craft a URL which will result in code being executed by Jupyter due to a cross-side-scripting (XSS) bug in the Dask dashboard. It is possible for attackers to craft a phishing URL that assumes Jupyter Lab and Dask may be running on localhost and using default ports. If a user clicks on the malicious link it will open an error page in the Dask Dashboard via the Jupyter Lab proxy which will cause code to be executed by the default Jupyter Python kernel. This vulnerability is fixed in 2026.1.0.

Announced Source revision 1
Original source ↗

DEBIAN-CVE-2026-23528

Primary source · Revision 1

Imported from structured advisory data. Source references identify upstream records or fields; verify affected versions and your deployed configuration.

Security context

Source reference: osv:DEBIAN-CVE-2026-23528

dask.distributed

Source reference: /affected/0/package/name

Affected versions
2022.12.1+ds.1-3

Source reference: /affected/0/versions

2023.12.1+ds-1

Source reference: /affected/0/versions

2023.12.1+ds-2

Source reference: /affected/0/versions

2023.12.1+ds-3

Source reference: /affected/0/versions

2023.12.1+ds-4

Source reference: /affected/0/versions

2023.8.0+ds.1-1

Source reference: /affected/0/versions

2024.12.1+ds-1

Source reference: /affected/0/versions

2024.12.1+ds-2

Source reference: /affected/0/versions

2024.12.1+ds-3

Source reference: /affected/0/versions

2024.5.2+ds.1-1

Source reference: /affected/0/versions

2024.5.2+ds.1-2

Source reference: /affected/0/versions

2024.5.2+ds.1-3

Source reference: /affected/0/versions

2024.5.2+ds.1-4

Source reference: /affected/0/versions

2024.5.2+ds.1-5

Source reference: /affected/0/versions

2024.5.2+ds.1-6

Source reference: /affected/0/versions

2024.5.2+ds.1-7

Source reference: /affected/0/versions

2024.5.2+ds.1-8

Source reference: /affected/0/versions

Fixed versions
Not stated in this record
Prerequisites
Not stated in this record

dask.distributed

Source reference: /affected/1/package/name

Affected versions
2024.12.1+ds-1

Source reference: /affected/1/versions

2024.12.1+ds-2

Source reference: /affected/1/versions

2024.12.1+ds-3

Source reference: /affected/1/versions

Fixed versions
Not stated in this record
Prerequisites
Not stated in this record

dask.distributed

Source reference: /affected/2/package/name

Affected versions
2024.12.1+ds-1

Source reference: /affected/2/versions

2024.12.1+ds-2

Source reference: /affected/2/versions

Fixed versions
2024.12.1+ds-3

Source reference: /affected/2/ranges

Prerequisites
Not stated in this record

Structured affected-version data

Original package identities and version rules from this source.

[
  {
    "ranges": [
      {
        "type": "ECOSYSTEM",
        "events": [
          {
            "introduced": "0"
          }
        ]
      }
    ],
    "package": {
      "name": "dask.distributed",
      "purl": "pkg:deb/debian/dask.distributed?arch=source&distro=bookworm",
      "ecosystem": "Debian:12"
    },
    "versions": [
      "2022.12.1+ds.1-3",
      "2023.12.1+ds-1",
      "2023.12.1+ds-2",
      "2023.12.1+ds-3",
      "2023.12.1+ds-4",
      "2023.8.0+ds.1-1",
      "2024.12.1+ds-1",
      "2024.12.1+ds-2",
      "2024.12.1+ds-3",
      "2024.5.2+ds.1-1",
      "2024.5.2+ds.1-2",
      "2024.5.2+ds.1-3",
      "2024.5.2+ds.1-4",
      "2024.5.2+ds.1-5",
      "2024.5.2+ds.1-6",
      "2024.5.2+ds.1-7",
      "2024.5.2+ds.1-8"
    ],
    "database_specific": {
      "source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-23528.json"
    },
    "ecosystem_specific": {
      "urgency": "not yet assigned"
    }
  },
  {
    "ranges": [
      {
        "type": "ECOSYSTEM",
        "events": [
          {
            "introduced": "0"
          }
        ]
      }
    ],
    "package": {
      "name": "dask.distributed",
      "purl": "pkg:deb/debian/dask.distributed?arch=source&distro=trixie",
      "ecosystem": "Debian:13"
    },
    "versions": [
      "2024.12.1+ds-1",
      "2024.12.1+ds-2",
      "2024.12.1+ds-3"
    ],
    "database_specific": {
      "source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-23528.json"
    },
    "ecosystem_specific": {
      "urgency": "not yet assigned"
    }
  },
  {
    "ranges": [
      {
        "type": "ECOSYSTEM",
        "events": [
          {
            "introduced": "0"
          },
          {
            "fixed": "2024.12.1+ds-3"
          }
        ]
      }
    ],
    "package": {
      "name": "dask.distributed",
      "purl": "pkg:deb/debian/dask.distributed?arch=source&distro=forky",
      "ecosystem": "Debian:14"
    },
    "versions": [
      "2024.12.1+ds-1",
      "2024.12.1+ds-2"
    ],
    "database_specific": {
      "source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-23528.json"
    },
    "ecosystem_specific": {
      "urgency": "not yet assigned"
    }
  }
]

Publisher severity

No explicit severity was provided.

Event
#55887 · Revision 1
Added to Heist Feed
Publisher date
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