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CVE-2018-7340
Multiple SAML libraries may allow authentication bypass via incorrect XML canonicalization and DOM traversal
High7.7EPSS 0.94%
- Published
- Updated
- Reserved
- Assigned by
- duo
Description
Duo Network Gateway 1.2.9 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.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| duoCNA (assigner) | 3.0 | High7.7 | CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N |
| NVDNVD · Modified | 3.1 | High7.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N |
- EPSS (exploitation in 30 days)
- 0.94% · top 39% of all CVEs (2 Nov 2026)
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The list uses the assigner's score when there is one, then CISA's, then NVD's: High 7.7.
Weakness
Affected products
Duo Security · Duo Network Gateway
- affected unspecified – < 1.2.9
References (2)
- https://duo.com/blog/duo-finds-saml-vulnerabilities-affecting-multiple-implementations (opens in a new tab)x_refsource_MISCx_transferred
- https://www.kb.cert.org/vuls/id/475445 (opens in a new tab)x_refsource_MISCx_transferred
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Record last updated .