CVSS 3.1
8.1 highCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:NCVE-2020-15110
High (8.1) in jupyterhub kubespawner. EPSS 1.1% chance of exploitation in the next 30 days. Fixed in jupyterhub-kubespawner 0.12.0.
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.
Severity
- EPSS
- 1.1% chance of exploitation in the next 30 days; higher than 66% of CVEs (scores of 2026-10-31)
- CWE
- CWE-863
- Published
- Modified
- Record from
- the NVD, synced
Affected
- jupyterhub:kubespawner
Packages (OSV)
| Advisory | Ecosystem | Package | Affected | Fixed in |
|---|---|---|---|---|
| GHSA-v7m9-9497-p9gr | PyPI | jupyterhub-kubespawner | <0.12.0 | 0.12.0 |
| PYSEC-2020-51 | PyPI | jupyterhub-kubespawner | <0.12.0 | 0.12.0 |
References
- https://github.com/jupyterhub/kubespawner/commit/3dfe870a7f5e98e2e398b01996ca6b8eff4bb1d0
- https://github.com/jupyterhub/kubespawner/security/advisories/GHSA-v7m9-9497-p9gr
- https://github.com/jupyterhub/kubespawner/commit/3dfe870a7f5e98e2e398b01996ca6b8eff4bb1d0
- https://github.com/jupyterhub/kubespawner/security/advisories/GHSA-v7m9-9497-p9gr