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CVE-2017-11430

30
FAUCET Score

CVE-2017-11430 is a critical vulnerability affecting OmniAuth OmnitAuth-SAML versions 1.9.0 and earlier, allowing attackers to bypass SAML authentication by manipulating XML data without invalidating the cryptographic signature. With a CVSS score of 9.8 (CRITICAL), this vulnerability has a network attack vector, low attack complexity, and can lead to complete compromise of confidentiality, integrity, and availability. While there is no known active exploitation or public exploit code (Metasploit, Nuclei, ExploitDB), it has garnered significant community discussion and media coverage, indicating awareness of its potential impact.

Impacted Technologies

VendorProductVersion(s)CPE
<= 1.9.0CPE matchmatch criteria
cpe:2.3:a:omniauth:omniauth_saml:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.0

7.7HIGH

CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
CHANGED
Confidentiality Impact
HIGH
Integrity Impact
NONE
Availability Impact
NONE
Exploitability Score
3.1
Impact Score
4.0
CvssVersion
3.0

Exploit Intelligence

EPSS Score
2.42%
Probability of exploitation in next 30 days
EPSS Percentile
82.4%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0242 is in the 72nd percentile among its peer group of 36,897 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.3 Bluesky, 0.3 Mastodon, and 2.4 GitHub mentions.

Media Mentions

The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (1)

rubygemspatch availablevia ghsa
Product: omniauth-samlFixed in: 1.10.0

Vendor Advisories (1)

rubygemsGHSA-94hm-8q65-rmxmhigh

OmniAuth-SAML authentication bypass via incorrect XML canonicalization and DOM traversal

Jul 5, 2019

References

duo.com / blog/duo-finds-saml-vulnerabilities-affecting-multiple-implementations
ExploitTechnical DescriptionThird Party Advisory
kb.cert.org / vuls/id/475445
Third Party AdvisoryUS Government Resource