8.1

CVE-2020-15110: jupyterhub kubespawner Incorrect Authorization

CVSS: 8.1v3.1HighModified
AliasesGHSA-v7m9-9497-p9grPYSEC-2020-51
Published 17-07-2020Last modified 04-08-2024
Open JSON

Vulnerability summary

CVE-2020-15110 is a high (CVSS 8.1) Incorrect Authorization vulnerability in jupyterhub kubespawner. EPSS estimates a 1.11% chance of exploitation in the next 30 days, higher than 65.5% of scored vulnerabilities. 1 public exploit is recorded.

Overall risk
43/100
0100
Medium · default modelHow is this calculated?
CVSS score
8.1/10
010
High · v3.1 (NVD)
EPSS score
1.11%
0%100%
Low · 0.00 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits1github

Timeline

  1. 17-07-2020
    PublishedVulnerability first disclosed.
  2. 04-08-2024
    Last modifiedVulnerability information updated.

Description

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.

CVSS metrics

5 scores · 3 sources · 3 versions

EPSS trend

Probability

1.11%

Chance of exploitation in the next 30 days

Percentile

66%

Versus all other CVEs

30-day change

0.00 pp

From 1.11% on 20-09-2026

20-09-202620-10-2026
EPSS score
1.11%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

1 found
  • githubUnverified

    Kubespawner

    Maturity: poc

Weaknesses

CWE · root cause

Affected systems

Jupyterhub1 product
PyPI1 product
  • jupyterhub-kubespawner< 3dfe870a7f5e98e2e398b01996ca6b8eff4bb1d0 | < 0.12.0

2 vendors · 2 products

References

5 links