{"resultsPerPage":1,"startIndex":0,"totalResults":1,"format":"NVD_CVE","version":"2.0","timestamp":"2026-04-18T06:53:13.209","vulnerabilities":[{"cve":{"id":"CVE-2020-26261","sourceIdentifier":"security-advisories@github.com","published":"2020-12-09T17:15:30.603","lastModified":"2024-11-21T05:19:41.350","vulnStatus":"Modified","cveTags":[],"descriptions":[{"lang":"en","value":"jupyterhub-systemdspawner enables JupyterHub to spawn single-user notebook servers using systemd. In jupyterhub-systemdspawner before version 0.15 user API tokens issued to single-user servers are specified in the environment of systemd units. These tokens are incorrectly accessible to all users. In particular, the-littlest-jupyterhub is affected, which uses systemdspawner by default. This is patched in jupyterhub-systemdspawner v0.15"},{"lang":"es","value":"jupyterhub-systemdspawner permite que JupyterHub genere servidores de portátiles de un solo usuario utilizando systemd. En jupyterhub-systemdspawner, versiones anteriores a 0.15, los tokens de la API de usuario emitidos a servidores de un solo usuario son especificados en el entorno de las unidades systemd. Estos tokens son incorrectamente accesibles para todos los usuarios. En particular, está afectado the-littlest-jupyterhub, que usa systemdspawner por defecto. Esto está parcheado en jupyterhub-systemdspawner versión v0.15"}],"metrics":{"cvssMetricV31":[{"source":"security-advisories@github.com","type":"Secondary","cvssData":{"version":"3.1","vectorString":"CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:N","baseScore":7.9,"baseSeverity":"HIGH","attackVector":"LOCAL","attackComplexity":"LOW","privilegesRequired":"LOW","userInteraction":"REQUIRED","scope":"CHANGED","confidentialityImpact":"HIGH","integrityImpact":"HIGH","availabilityImpact":"NONE"},"exploitabilityScore":1.5,"impactScore":5.8},{"source":"nvd@nist.gov","type":"Primary","cvssData":{"version":"3.1","vectorString":"CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:N","baseScore":7.9,"baseSeverity":"HIGH","attackVector":"LOCAL","attackComplexity":"LOW","privilegesRequired":"LOW","userInteraction":"REQUIRED","scope":"CHANGED","confidentialityImpact":"HIGH","integrityImpact":"HIGH","availabilityImpact":"NONE"},"exploitabilityScore":1.5,"impactScore":5.8}],"cvssMetricV2":[{"source":"nvd@nist.gov","type":"Primary","cvssData":{"version":"2.0","vectorString":"AV:L/AC:M/Au:N/C:P/I:P/A:N","baseScore":3.3,"accessVector":"LOCAL","accessComplexity":"MEDIUM","authentication":"NONE","confidentialityImpact":"PARTIAL","integrityImpact":"PARTIAL","availabilityImpact":"NONE"},"baseSeverity":"LOW","exploitabilityScore":3.4,"impactScore":4.9,"acInsufInfo":false,"obtainAllPrivilege":false,"obtainUserPrivilege":false,"obtainOtherPrivilege":false,"userInteractionRequired":true}]},"weaknesses":[{"source":"security-advisories@github.com","type":"Secondary","description":[{"lang":"en","value":"CWE-668"}]},{"source":"nvd@nist.gov","type":"Primary","description":[{"lang":"en","value":"CWE-668"}]}],"configurations":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:a:jupyterhub:systemdspawner:*:*:*:*:*:*:*:*","versionEndExcluding":"0.15","matchCriteriaId":"175655AE-2247-4426-8AE8-0AD5532FBC50"}]}]}],"references":[{"url":"https://github.com/jupyterhub/systemdspawner/blob/master/CHANGELOG.md#v015","source":"security-advisories@github.com","tags":["Release Notes","Third Party Advisory"]},{"url":"https://github.com/jupyterhub/systemdspawner/commit/a4d08fd2ade1cfd0ef2c29dc221e649345f23580","source":"security-advisories@github.com","tags":["Patch","Third Party Advisory"]},{"url":"https://github.com/jupyterhub/systemdspawner/security/advisories/GHSA-cg54-gpgr-4rm6","source":"security-advisories@github.com","tags":["Third Party Advisory"]},{"url":"https://pypi.org/project/jupyterhub-systemdspawner/","source":"security-advisories@github.com","tags":["Product","Third Party Advisory"]},{"url":"https://github.com/jupyterhub/systemdspawner/blob/master/CHANGELOG.md#v015","source":"af854a3a-2127-422b-91ae-364da2661108","tags":["Release Notes","Third Party Advisory"]},{"url":"https://github.com/jupyterhub/systemdspawner/commit/a4d08fd2ade1cfd0ef2c29dc221e649345f23580","source":"af854a3a-2127-422b-91ae-364da2661108","tags":["Patch","Third Party Advisory"]},{"url":"https://github.com/jupyterhub/systemdspawner/security/advisories/GHSA-cg54-gpgr-4rm6","source":"af854a3a-2127-422b-91ae-364da2661108","tags":["Third Party Advisory"]},{"url":"https://pypi.org/project/jupyterhub-systemdspawner/","source":"af854a3a-2127-422b-91ae-364da2661108","tags":["Product","Third Party Advisory"]}]}}]}