CVE•Published 2026-04-03•Modified 2026-07-24•1 article on news•5 live references•NVD data
CVE-2026-33175Jupyter · Oauthenticator
Vulnerability data via NVD (ingested)
CVSS v3.1
8.8
HIGH
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
EPSS percentile
36
Exploit Prediction Scoring System · top 64% of all CVEs
Description
OAuthenticator is software that allows OAuth2 identity providers to be plugged in and used with JupyterHub. Prior to version 17.4.0, an authentication bypass vulnerability in oauthenticator allows an attacker with an unverified email address on an Auth0 tenant to login to JupyterHub. When email is used as the usrname_claim, this gives users control over their username and the possibility of account takeover. This issue has been patched in version 17.4.0.
Timeline
Published 2026-04-03
Modified 2026-07-24
External references
Search for exposed instances
Shodan + Censys queries derived from NVD's CPE data. The vuln tag catches assets Shodan has explicitly linked to this CVE; the product / banner fingerprints find exposed instances even when the vuln tag was never applied (which is common).
Shodan · vuln tag0 hosts
vuln:CVE-2026-33175Hosts Shodan has explicitly fingerprinted as vulnerable.
Shodan · product
product:"Jupyter Oauthenticator"All exposed Jupyter Oauthenticator instances — cross-reference with the CVE's affected-version range.
Shodan · banner/body mention
http.html:"Oauthenticator"HTTP body or banner mentions "Oauthenticator" — catches deploys Shodan didn't identify as a product.
More intel sources (5)
Shodan report
vuln:CVE-2026-33175Country / ASN / product breakdown for the vuln query.
Censys
vulnerabilities.cve_id: CVE-2026-33175Censys host search filtered to this CVE id.
grep.app
CVE-2026-33175Public source-code mentions — fast PoC discovery.
GitHub code
CVE-2026-33175GitHub code search for direct mentions.
Google dork
"CVE-2026-33175" exploit -site:nvd.nist.govWrite-ups and news, NVD excluded.