9.3

CVE-2017-16897: auth0 passport-wsfed-saml2 Authentication Bypass by Spoofing

CVSS: 9.3v2.0HighModified
AliasesGHSA-77fw-rf4v-vfp9
Published 23-12-2017Last modified 05-08-2024
Open JSON

Vulnerability summary

CVE-2017-16897 is a high (CVSS 9.3) Authentication Bypass by Spoofing vulnerability in auth0 passport-wsfed-saml2. EPSS estimates a 1.38% chance of exploitation in the next 30 days, higher than 71.7% of scored vulnerabilities.

Overall risk
70/100
0100
High · default modelHow is this calculated?
CVSS score
9.3/10
010
High · v2.0 (NVD)
EPSS score
1.38%
0%100%
Low · 0.00 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Timeline

  1. 23-12-2017
    PublishedVulnerability first disclosed.
  2. 05-08-2024
    Last modifiedVulnerability information updated.

Description

A vulnerability has been discovered in the Auth0 passport-wsfed-saml2 library affecting versions < 3.0.5. This vulnerability allows an attacker to impersonate another user and potentially elevate their privileges if the SAML identity provider does not sign the full SAML response (e.g., only signs the assertion within the response).

CVSS metrics

3 scores · 2 sources · 2 versions

EPSS trend

Probability

1.38%

Chance of exploitation in the next 30 days

Percentile

72%

Versus all other CVEs

30-day change

0.00 pp

From 1.38% on 20-09-2026

20-09-202620-10-2026
EPSS score
1.38%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Auth01 product
Npm1 product
  • passport-wsfed-saml2< 3.0.5

2 vendors · 2 products

References

5 links