Unrated

DEBIAN-CVE-2026-102830

Type: advisorySource: OSV1 source record

JupyterLab is an extensible environment for interactive and reproducible computing, based on the Jupyter Notebook Architecture. From JupyterLab 3.0.0 until 4.5.11 and 4.6.4, and in JupyterLite Core 0.8.3 and earlier, the Plural-Forms header in a selected third-party language pack can append JavaScript after a valid plural rule because prefix-only regular-expression validation accepts a matching prefix without requiring the entire header to match. JupyterLab passes the accepted expression to new Function, so loading the catalogue and translating a plural string executes the appended code in the authenticated JupyterLab origin. Where Jupyter Server kernels, terminals, and APIs are exposed, the code can use authenticated server APIs to read or modify files and run code. Impact is much more limited in JupyterLite because it typically lacks most exposed Jupyter Server surfaces. The default English locale is unaffected because it does not load a translation catalogue. This issue is fixed in JupyterLab 4.5.11 and 4.6.4 and JupyterLite Core 0.8.4.

Announced 29 Sept 2026Source revision 1

Original source ↗

DEBIAN-CVE-2026-102830

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-2026-102830

jupyterlab

Source reference: /affected/0/package/name

Affected versions: 4.0.11+ds1+~cs11.25.27-7
Source reference: /affected/0/versions
4.0.11+ds1+~cs11.25.27-8
Source reference: /affected/0/versions
4.0.11+ds1+~cs11.25.27-9
Source reference: /affected/0/versions
4.0.11+ds2+~cs11.25.27-1
Source reference: /affected/0/versions
4.0.11+ds2+~cs11.25.27-3
Source reference: /affected/0/versions
4.0.11+ds3+~cs11.25.27-1
Source reference: /affected/0/versions
4.0.11+ds4+~cs11.25.27-1
Source reference: /affected/0/versions
4.0.11+ds4+~cs11.25.27-2
Source reference: /affected/0/versions
4.0.11+ds4+~cs11.25.27-3
Source reference: /affected/0/versions
4.0.11+ds4+~cs11.25.27-4
Source reference: /affected/0/versions
4.0.11+ds5+~cs11.25.27-1
Source reference: /affected/0/versions
4.0.13+ds1+~2.0.1+~cs1.4.4-1
Source reference: /affected/0/versions
4.1.3+ds1+~2.0.1+~0.15.3+~cs1.4.4-1
Source reference: /affected/0/versions
4.1.8+ds1+~2.0.1+~0.15.3+~cs1.4.4-1
Source reference: /affected/0/versions
4.1.8+ds1+~2.0.1+~0.15.3+~cs1.4.4-2
Source reference: /affected/0/versions
4.1.8+ds1+~2.0.1+~0.15.3+~cs1.4.4-3
Source reference: /affected/0/versions
4.1.8+ds1+~2.0.1+~0.15.3+~cs1.4.4-4
Source reference: /affected/0/versions
4.1.8+ds1+~2.0.1+~0.15.3+~cs1.4.4-5
Source reference: /affected/0/versions
4.1.8+ds1+~2.0.1+~0.15.3+~cs1.4.4-6
Source reference: /affected/0/versions
4.1.8+ds1+~2.0.1+~0.15.3+~cs1.4.4-7
Source reference: /affected/0/versions
4.1.8+ds1+~2.0.1+~0.15.3+~cs1.4.4-8
Source reference: /affected/0/versions
4.4.1+ds1+~3.0.5+~0.16.6+~cs1.4.4-1
Source reference: /affected/0/versions
4.4.10+ds1+~3.1.0+~0.16.6+~cs1.4.4-1
Source reference: /affected/0/versions
4.4.10+ds1+~3.1.0+~0.16.6+~cs1.4.4-2
Source reference: /affected/0/versions
4.4.10+ds1+~3.1.0+~0.16.6+~cs1.4.4-3
Source reference: /affected/0/versions
4.4.10+ds1+~3.1.0+~0.16.6+~cs1.4.4-4
Source reference: /affected/0/versions
4.4.10+ds1+~3.1.0+~0.16.6+~cs1.4.4-5
Source reference: /affected/0/versions
4.4.10+ds1+~3.1.0+~0.16.6+~cs1.4.4-6
Source reference: /affected/0/versions
4.4.8+ds1+~3.1.0+~0.16.6+~cs1.4.4-1
Source reference: /affected/0/versions
Fixed versions: Not stated in this record
Prerequisites: Not stated in this record

jupyterlab

Source reference: /affected/1/package/name

Affected versions: 4.0.11+ds1+~cs11.25.27-7
Source reference: /affected/1/versions
4.0.11+ds1+~cs11.25.27-8
Source reference: /affected/1/versions
4.0.11+ds1+~cs11.25.27-9
Source reference: /affected/1/versions
4.0.11+ds2+~cs11.25.27-1
Source reference: /affected/1/versions
4.0.11+ds2+~cs11.25.27-3
Source reference: /affected/1/versions
4.0.11+ds3+~cs11.25.27-1
Source reference: /affected/1/versions
4.0.11+ds4+~cs11.25.27-1
Source reference: /affected/1/versions
4.0.11+ds4+~cs11.25.27-2
Source reference: /affected/1/versions
4.0.11+ds4+~cs11.25.27-3
Source reference: /affected/1/versions
4.0.11+ds4+~cs11.25.27-4
Source reference: /affected/1/versions
4.0.11+ds5+~cs11.25.27-1
Source reference: /affected/1/versions
4.0.13+ds1+~2.0.1+~cs1.4.4-1
Source reference: /affected/1/versions
4.1.3+ds1+~2.0.1+~0.15.3+~cs1.4.4-1
Source reference: /affected/1/versions
4.1.8+ds1+~2.0.1+~0.15.3+~cs1.4.4-1
Source reference: /affected/1/versions
4.1.8+ds1+~2.0.1+~0.15.3+~cs1.4.4-2
Source reference: /affected/1/versions
4.1.8+ds1+~2.0.1+~0.15.3+~cs1.4.4-3
Source reference: /affected/1/versions
4.1.8+ds1+~2.0.1+~0.15.3+~cs1.4.4-4
Source reference: /affected/1/versions
4.1.8+ds1+~2.0.1+~0.15.3+~cs1.4.4-5
Source reference: /affected/1/versions
4.1.8+ds1+~2.0.1+~0.15.3+~cs1.4.4-6
Source reference: /affected/1/versions
4.1.8+ds1+~2.0.1+~0.15.3+~cs1.4.4-7
Source reference: /affected/1/versions
4.1.8+ds1+~2.0.1+~0.15.3+~cs1.4.4-8
Source reference: /affected/1/versions
4.4.1+ds1+~3.0.5+~0.16.6+~cs1.4.4-1
Source reference: /affected/1/versions
4.4.10+ds1+~3.1.0+~0.16.6+~cs1.4.4-1
Source reference: /affected/1/versions
4.4.10+ds1+~3.1.0+~0.16.6+~cs1.4.4-2
Source reference: /affected/1/versions
4.4.10+ds1+~3.1.0+~0.16.6+~cs1.4.4-3
Source reference: /affected/1/versions
4.4.10+ds1+~3.1.0+~0.16.6+~cs1.4.4-4
Source reference: /affected/1/versions
4.4.10+ds1+~3.1.0+~0.16.6+~cs1.4.4-5
Source reference: /affected/1/versions
4.4.10+ds1+~3.1.0+~0.16.6+~cs1.4.4-6
Source reference: /affected/1/versions
4.4.8+ds1+~3.1.0+~0.16.6+~cs1.4.4-1
Source reference: /affected/1/versions
Fixed versions: Not stated in this record
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": "jupyterlab",
      "purl": "pkg:deb/debian/jupyterlab?arch=source&distro=trixie",
      "ecosystem": "Debian:13"
    },
    "versions": [
      "4.0.11+ds1+~cs11.25.27-7",
      "4.0.11+ds1+~cs11.25.27-8",
      "4.0.11+ds1+~cs11.25.27-9",
      "4.0.11+ds2+~cs11.25.27-1",
      "4.0.11+ds2+~cs11.25.27-3",
      "4.0.11+ds3+~cs11.25.27-1",
      "4.0.11+ds4+~cs11.25.27-1",
      "4.0.11+ds4+~cs11.25.27-2",
      "4.0.11+ds4+~cs11.25.27-3",
      "4.0.11+ds4+~cs11.25.27-4",
      "4.0.11+ds5+~cs11.25.27-1",
      "4.0.13+ds1+~2.0.1+~cs1.4.4-1",
      "4.1.3+ds1+~2.0.1+~0.15.3+~cs1.4.4-1",
      "4.1.8+ds1+~2.0.1+~0.15.3+~cs1.4.4-1",
      "4.1.8+ds1+~2.0.1+~0.15.3+~cs1.4.4-2",
      "4.1.8+ds1+~2.0.1+~0.15.3+~cs1.4.4-3",
      "4.1.8+ds1+~2.0.1+~0.15.3+~cs1.4.4-4",
      "4.1.8+ds1+~2.0.1+~0.15.3+~cs1.4.4-5",
      "4.1.8+ds1+~2.0.1+~0.15.3+~cs1.4.4-6",
      "4.1.8+ds1+~2.0.1+~0.15.3+~cs1.4.4-7",
      "4.1.8+ds1+~2.0.1+~0.15.3+~cs1.4.4-8",
      "4.4.1+ds1+~3.0.5+~0.16.6+~cs1.4.4-1",
      "4.4.10+ds1+~3.1.0+~0.16.6+~cs1.4.4-1",
      "4.4.10+ds1+~3.1.0+~0.16.6+~cs1.4.4-2",
      "4.4.10+ds1+~3.1.0+~0.16.6+~cs1.4.4-3",
      "4.4.10+ds1+~3.1.0+~0.16.6+~cs1.4.4-4",
      "4.4.10+ds1+~3.1.0+~0.16.6+~cs1.4.4-5",
      "4.4.10+ds1+~3.1.0+~0.16.6+~cs1.4.4-6",
      "4.4.8+ds1+~3.1.0+~0.16.6+~cs1.4.4-1"
    ],
    "database_specific": {
      "source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-102830.json"
    },
    "ecosystem_specific": {
      "urgency": "not yet assigned"
    }
  },
  {
    "ranges": [
      {
        "type": "ECOSYSTEM",
        "events": [
          {
            "introduced": "0"
          }
        ]
      }
    ],
    "package": {
      "name": "jupyterlab",
      "purl": "pkg:deb/debian/jupyterlab?arch=source&distro=forky",
      "ecosystem": "Debian:14"
    },
    "versions": [
      "4.0.11+ds1+~cs11.25.27-7",
      "4.0.11+ds1+~cs11.25.27-8",
      "4.0.11+ds1+~cs11.25.27-9",
      "4.0.11+ds2+~cs11.25.27-1",
      "4.0.11+ds2+~cs11.25.27-3",
      "4.0.11+ds3+~cs11.25.27-1",
      "4.0.11+ds4+~cs11.25.27-1",
      "4.0.11+ds4+~cs11.25.27-2",
      "4.0.11+ds4+~cs11.25.27-3",
      "4.0.11+ds4+~cs11.25.27-4",
      "4.0.11+ds5+~cs11.25.27-1",
      "4.0.13+ds1+~2.0.1+~cs1.4.4-1",
      "4.1.3+ds1+~2.0.1+~0.15.3+~cs1.4.4-1",
      "4.1.8+ds1+~2.0.1+~0.15.3+~cs1.4.4-1",
      "4.1.8+ds1+~2.0.1+~0.15.3+~cs1.4.4-2",
      "4.1.8+ds1+~2.0.1+~0.15.3+~cs1.4.4-3",
      "4.1.8+ds1+~2.0.1+~0.15.3+~cs1.4.4-4",
      "4.1.8+ds1+~2.0.1+~0.15.3+~cs1.4.4-5",
      "4.1.8+ds1+~2.0.1+~0.15.3+~cs1.4.4-6",
      "4.1.8+ds1+~2.0.1+~0.15.3+~cs1.4.4-7",
      "4.1.8+ds1+~2.0.1+~0.15.3+~cs1.4.4-8",
      "4.4.1+ds1+~3.0.5+~0.16.6+~cs1.4.4-1",
      "4.4.10+ds1+~3.1.0+~0.16.6+~cs1.4.4-1",
      "4.4.10+ds1+~3.1.0+~0.16.6+~cs1.4.4-2",
      "4.4.10+ds1+~3.1.0+~0.16.6+~cs1.4.4-3",
      "4.4.10+ds1+~3.1.0+~0.16.6+~cs1.4.4-4",
      "4.4.10+ds1+~3.1.0+~0.16.6+~cs1.4.4-5",
      "4.4.10+ds1+~3.1.0+~0.16.6+~cs1.4.4-6",
      "4.4.8+ds1+~3.1.0+~0.16.6+~cs1.4.4-1"
    ],
    "database_specific": {
      "source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-102830.json"
    },
    "ecosystem_specific": {
      "urgency": "not yet assigned"
    }
  }
]

Publisher severity

No explicit severity was provided.

Event: #37056 · Revision 1
Added to Heist Feed: Sun, 25 Oct 2026 10:06:24 GMT
Publisher date: Tue, 29 Sep 2026 19:17:25 GMT

Read the original announcement