DEBIAN-CVE-2026-23528
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.
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/versions2023.12.1+ds-1Source reference:
/affected/0/versions2023.12.1+ds-2Source reference:
/affected/0/versions2023.12.1+ds-3Source reference:
/affected/0/versions2023.12.1+ds-4Source reference:
/affected/0/versions2023.8.0+ds.1-1Source reference:
/affected/0/versions2024.12.1+ds-1Source reference:
/affected/0/versions2024.12.1+ds-2Source reference:
/affected/0/versions2024.12.1+ds-3Source reference:
/affected/0/versions2024.5.2+ds.1-1Source reference:
/affected/0/versions2024.5.2+ds.1-2Source reference:
/affected/0/versions2024.5.2+ds.1-3Source reference:
/affected/0/versions2024.5.2+ds.1-4Source reference:
/affected/0/versions2024.5.2+ds.1-5Source reference:
/affected/0/versions2024.5.2+ds.1-6Source reference:
/affected/0/versions2024.5.2+ds.1-7Source reference:
/affected/0/versions2024.5.2+ds.1-8Source 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/versions2024.12.1+ds-2Source reference:
/affected/1/versions2024.12.1+ds-3Source 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/versions2024.12.1+ds-2Source 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