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Not in CISA KEV
HIGH severity

CVE-2019-13483 — passport-sharepoint

HIGH

CVE-2019-13483 is a high-severity (CVSS 7.3) CWE-345 vulnerability in passport-sharepoint. A fix is available for passport-sharepoint — see the affected versions and patch details below.

Auth0 Passport-SharePoint does not validate JWT signature

Also known asGHSA-45fh-g845-pj9w
Published
Updated
Affected
1 pkg
Patched
1 / 1
Exploits
None indexed
Exploitation data as of Nov 2, 2026 · OSV.dev, NVD, FIRST.org (EPSS)

EPSS Exploitation Probability

via FIRST.org ↗
0.6%probability of exploitation in next 30 days
Lower Risk0.00%
Lower risk than most CVEs47th percentile — riskier than 47% of all scored CVEsHighest risk
0.00%0.35%0.71%1.06%0.1%0.6%May 26Sep 26Nov 26

Probability of exploitation in the next 30 days, from FIRST.org EPSS.

How urgent is this, really

Where this sits among everything scored

Real-World Exposure

1 pkg affected

How broadly this vulnerability is actually deployed: weekly install volume shows current usage, and reverse-dependency count shows how many other packages break if it stays unpatched.

2other npm packages depend on this — each one inherits the vulnerability until it's patched upstream
passport-sharepointnpm
120downloads / week

Description

Auth0 Passport-SharePoint before 0.4.0 does not validate the JWT signature of an Access Token before processing. This allows attackers to forge tokens and bypass authentication and authorization mechanisms.

Affected Packages

1 total 1 fixed
EcosystemPackageVulnerable rangeFix
📦npmpassport-sharepointall versions0.4.0npm install passport-sharepoint@0.4.0

Affected Products

1 product · 1 configurations
Application
passport-sharepointauth0
< 0.4.0
range

Detection & mitigation playbook

Open-source dependency

  1. Detect

    Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for passport-sharepoint, including transitive dependencies — a direct dependency you never call can still pull in a vulnerable version.

  2. Fix

    Update passport-sharepoint to 0.4.0 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms CVE-2019-13483 is resolved across your whole dependency graph.

  3. Workarounds

    If you can't upgrade right away: gate or disable the affected feature, validate untrusted input at the boundary, and avoid passing attacker-controlled data into the vulnerable path. O3's runtime protection blocks exploitation in production as an interim safeguard until the upgrade lands.

Frequently Asked Questions

Auth0 Passport-SharePoint before 0.4.0 does not validate the JWT signature of an Access Token before processing. This allows attackers to forge tokens and bypass authentication and authorization mechanisms.
O3 Security · Impact-Aware SCA

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CVE-2019-13483: passport-sharepoint — Fixed in 0.4.0