CVE-2018-5387
Wizkunde SAMLBase 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…
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (1.66%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
Description
Wizkunde SAMLBase 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 3.1
- 7.5 HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
- EPSS
- 1.66% probability · 77th percentile
- Public exploits
- None in Exploit-DB
- CISA KEV
- Not listed
- Weakness
- CWE-287, CWE-347
- Affected
- wizkunde/samlbase
- Source
- cret@cert.org
EPSS 1.7% since 27 October 2026; no change recorded yet. Points are recorded when the score first appears and whenever it moves by a percentage point or more.
References
- https://duo.com/blog/duo-finds-saml-vulnerabilities-affecting-multiple-implementationsExploit, Third Party Advisory
- https://github.com/GoGentoOSS/SAMLBase/commit/482cdf8c090e0f1179073034ebcb609ac7c3f5b3Patch, Third Party Advisory
- https://github.com/GoGentoOSS/SAMLBase/issues/3Issue Tracking, Patch, Third Party Advisory
- https://www.kb.cert.org/vuls/id/475445Third Party Advisory, US Government Resource
- https://duo.com/blog/duo-finds-saml-vulnerabilities-affecting-multiple-implementationsExploit, Third Party Advisory
- https://github.com/GoGentoOSS/SAMLBase/commit/482cdf8c090e0f1179073034ebcb609ac7c3f5b3Patch, Third Party Advisory
- https://github.com/GoGentoOSS/SAMLBase/issues/3Issue Tracking, Patch, Third Party Advisory
- https://www.kb.cert.org/vuls/id/475445Third Party Advisory, US Government Resource
Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.