How severe is CVE-2019-13483?

CVE-2019-13483 has a CVSS 3.x base score of 7.3, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is low, integrity low, and availability low.

Is CVE-2019-13483 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (43rd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2019-13483?

CVE-2019-13483 affects Auth0 Passport-sharepoint. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2019-13483?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

When was CVE-2019-13483 published?

CVE-2019-13483 was published on 2019-07-25 and last updated on 2026-06-17.

CVE-2019-13483

CVE-2019-13483 is a high-severity vulnerability in Auth0 Passport-sharepoint with a CVSS 3.x base score of 7.3. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-345.

Key facts

Severity: High (CVSS 3.x base score 7.3)
CVSS v2: 7.5
EPSS exploit prediction: 1% (43rd percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-345
Affected product: Auth0 Passport-sharepoint
Published: 2019-07-25
Last modified: 2026-06-17

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.

Frequently asked questions

What is CVE-2019-13483?: 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.
How severe is CVE-2019-13483?: CVE-2019-13483 has a CVSS 3.x base score of 7.3, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is low, integrity low, and availability low.
Is CVE-2019-13483 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (43rd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2019-13483?: CVE-2019-13483 affects Auth0 Passport-sharepoint. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2019-13483?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
When was CVE-2019-13483 published?: CVE-2019-13483 was published on 2019-07-25 and last updated on 2026-06-17.

References

https://auth0.com/docs/security/bulletins/cve-2019-13483

Affected products (1)

cpe:2.3:a:auth0:passport-sharepoint:*:*:*:*:*:*:*:*

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