9.8

CVE-2017-11430: omniauth omniauth_saml Improper Authentication

CVSS: 9.8v3.0CriticalModified
AliasesGHSA-94hm-8q65-rmxm
Published 17-04-2019Last modified 05-08-2024
Open JSON

Vulnerability summary

CVE-2017-11430 is a critical (CVSS 9.8) Improper Authentication vulnerability in omniauth omniauth_saml. EPSS estimates a 2.44% chance of exploitation in the next 30 days, higher than 84% of scored vulnerabilities. 1 public exploit is recorded.

Overall risk
70/100
0100
High · default modelHow is this calculated?
CVSS score
9.8/10
010
Critical · v3.0 (NVD)
EPSS score
2.44%
0%100%
Low · +0.02 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits1reference

Timeline

  1. 17-04-2019
    PublishedVulnerability first disclosed.
  2. 05-08-2024
    Last modifiedVulnerability information updated.

Description

OmniAuth OmnitAuth-SAML 1.9.0 and earlier may incorrectly utilize the results of XML DOM traversal and canonicalization APIs in such a way that an attacker may be able to manipulate the SAML data without invalidating the cryptographic signature, allowing the attack to potentially bypass authentication to SAML service providers.

CVSS metrics

4 scores · 3 sources · 2 versions

EPSS trend

Probability

2.44%

Chance of exploitation in the next 30 days

Percentile

84%

Versus all other CVEs

30-day change

+0.02 pp

From 2.42% on 19-09-2026

19-09-202619-10-2026
EPSS score
2.44%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

1 found
  • referenceUnverified

    Exploit Reference (duo.com)

    Maturity: unknown

Weaknesses

CWE · root cause

Affected systems

Omniauth2 products
RubyGems1 product
  • omniauth-saml< 1.10.0

2 vendors · 3 products

References

5 links