CVSS 3.0
9.8 criticalCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:HCVE-2017-11427
Critical (9.8) in onelogin pythonsaml. EPSS 4.4% chance of exploitation in the next 30 days. Fixed in python-saml 2.4.0.
OneLogin PythonSAML 2.3.0 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.
Severity
- EPSS
- 4.4% chance of exploitation in the next 30 days; higher than 91% of CVEs (scores of 2026-10-31)
- CWE
- CWE-287
- Published
- Modified
- Record from
- the NVD, synced
Affected
- onelogin:pythonsaml
Packages (OSV)
| Advisory | Ecosystem | Package | Affected | Fixed in |
|---|---|---|---|---|
| GHSA-j8j8-348v-wfm3 | PyPI | python-saml | <2.4.0 | 2.4.0 |
| PYSEC-2019-198 | PyPI | python-saml | <2.4.0 | 2.4.0 |