CVE-2020-36191 json
Cross-Site Request Forgery in JupyterHub
published 2021-01-13 5 y ago modified 2026-09-08 2 mo ago also BIT-jupyterhub-2020-36191 , EUVD-2021-0106 , GHSA-7xx3-qp5w-fw96 , PYSEC-2021-67
- cvss
- 4.5
- version 3.1, NVD
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.5%
- EPSS 0.5% chance of exploitation in 30 days, percentile 43%
- public exploits
- 0
- none known
Summary
JupyterHub 1.1.0 allows CSRF in the admin panel via a request that lacks an _xsrf field, as demonstrated by a /hub/api/user request (to add or remove a user account).
Patch / fix
- pypi jupyterhub 1.2.0b1
- bitnami jupyterhub 1.1.1
- jupyterhub Debian 14, Debian 13, Debian 12 3.0.0+ds1-1
debian advisories DEBIAN-CVE-2020-36191
Exploit prediction
0.51% chance of exploitation in the next 30 days, higher than 43% of all scored CVEs (FIRST EPSS, 2026-11-08).
Exploits and checks
- github.com https://github.com/jupyterhub/jupyterhub/issues/3304 referenced PoC, tagged "exploit" by a source, unverified
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| GitHub | 3.1 | 4.5 | CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:U/C:N/I:H/A:N |
| NVD | 3.1 | 4.5 | CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:U/C:N/I:H/A:N |
| NVD | 2.0 | 3.5 | AV:N/AC:M/Au:S/C:N/I:P/A:N |
| OSV | 3.1 | 4.5 | CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:U/C:N/I:H/A:N |
Affected packages
| ecosystem | package | affected | fixed in |
|---|---|---|---|
| pypi | jupyterhub | <1.2.0b1 |
1.2.0b1 |
| bitnami | jupyterhub | >=1.1.0, <1.1.1 |
1.1.1 |
Classification
- Weakness
-
- CWE-352 Cross-Site Request Forgery
References
-
github.com
/jupyterhub/jupyterhub/issues/3304
web, exploit, third-party-advisory, advisory, report
-
github.com
/jupyterhub/jupyterhub/releases
web, third-party-advisory, advisory
-
nvd.nist.gov
/vuln/detail/CVE-2020-36191
advisory, web
-
github.com
/advisories/GHSA-7xx3-qp5w-fw96
advisory
-
github.com
/jupyterhub/jupyterhub
package
-
github.com
/pypa/advisory-database/tree/main/vulns/jupyterhub/PYSEC-2021-67.yaml
web
Sources
- CVE List CVE-2020-36191
- GitHub Advisory GHSA-7xx3-qp5w-fw96
- NVD CVE-2020-36191
- OSV BIT-jupyterhub-2020-36191
- OSV PYSEC-2021-67
Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.