CVE-2020-15110 json
Possible pod name collisions in jupyterhub-kubespawner
published 2020-07-17 6 y ago modified 2026-07-08 4 mo ago also GHSA-v7m9-9497-p9gr , PYSEC-2020-51 , EUVD-2020-0092
- cvss
- 6.8
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 1.1%
- EPSS 1.1% chance of exploitation in 30 days, percentile 66%
- public exploits
- 0
- none known
Summary
In jupyterhub-kubespawner before 0.12, certain usernames will be able to craft particular server names which will grant them access to the default server of other users who have matching usernames. This has been fixed in 0.12.
Patch / fix
- pypi jupyterhub-kubespawner 0.12.0
- jupyterhub kubespawner 0.12
Exploit prediction
1.11% chance of exploitation in the next 30 days, higher than 66% of all scored CVEs (FIRST EPSS, 2026-11-08).
Exploits and checks
- github.com https://github.com/jupyterhub/kubespawner/security/advisories/GHSA-v7m9-9497-p9gr referenced PoC, tagged "exploit" by a source, unverified
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 3.1 | 6.8 | CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:N |
| NVD | 3.1 | 8.1 | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N |
| NVD | 2.0 | 5.5 | AV:N/AC:L/Au:S/C:P/I:P/A:N |
| GitHub | 3.1 | 6.8 | CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:N |
Affected packages
| ecosystem | package | affected | fixed in |
|---|---|---|---|
| pypi | jupyterhub-kubespawner | <0.12.0 |
0.12.0 |
Affected products
- jupyterhub kubespawner
Classification
- Weakness
-
- CWE-863 Incorrect Authorization
References
-
github.com
/jupyterhub/kubespawner/commit/3dfe870a7f5e98e2e398b01996ca6b8eff4bb1d0
web, patch, third-party-advisory
-
github.com
/jupyterhub/kubespawner/security/advisories/GHSA-v7m9-9497-p9gr
web, exploit, third-party-advisory, advisory
-
nvd.nist.gov
/vuln/detail/CVE-2020-15110
advisory
-
github.com
/jupyterhub/kubespawner
package
-
github.com
/pypa/advisory-database/tree/main/vulns/jupyterhub-kubespawner/PYSEC-2020-51.yaml
web
Sources
- CVE List CVE-2020-15110
- GitHub Advisory GHSA-v7m9-9497-p9gr
- NVD CVE-2020-15110
- OSV PYSEC-2020-51
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.