CVE-2018-5387
CVSS v3
7.5
HIGH
EPSS Score
1.7 %
exploit probability, as of 2026-09-25
CISA KEV
No
known exploited
Exploitation
—
SSVC status
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.
Technical details
- Published
- 2018-07-24
Frequently asked questions
What is 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 potentially bypass authentication to SAML service providers.
Is CVE-2018-5387 actively exploited?
Active exploitation of CVE-2018-5387 has not been confirmed. Its EPSS score was 1.7% on 2026-09-25, the estimated probability of exploitation in the next 30 days.
What is the CVSS score for CVE-2018-5387?
CVE-2018-5387 has a CVSS v3 base score of 7.5 (HIGH severity).
Is CVE-2018-5387 affecting your environment?
Use isMalicious to check if any of your IPs or domains are associated with this vulnerability's IOCs.
No credit card required · 500 free checks/month · Free API key
Other 2018 vulnerabilities worth triaging
Ranked by exploit probability (EPSS).