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No exploitation reportedFix available

CVE-2018-5387

No exploitation reported by the sources we read.

  • Published2018-07-24
  • Fixed in1.2.7
  • WeaknessCWE-287 · CWE-347

Am I affected?

With a domain, we read the version its public headers and pages expose. A distribution build can carry the fix under an older number.

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.

Timeline

dates in UTC
  1. 2018-07-2415:29CVE publishedNVD

Versions per branch

OSV · NVD
gogentooss/samlbase
BranchAffectedFixed in
1.2< 1.2.71.2.7
Wizkunde samlbase
BranchAffectedFixed in
1.4< 1.4.21.4.2

as publishedRanges as NVD and OSV publish them; a distribution’s build can be fixed under an older number.

Fix

  1. Update gogentooss/samlbase to 1.2.7

Advisories and patches

Detection

Nuclei template
none so far
ProjectDiscovery
Exploit-DB
no entry
Exploit-DB
Proof of concept
Metasploit modules
none listed
Metasploit Framework

Sources

  • NVDCVSS 3.17.5read 2026-10-23
  • NVDCVSS 2.05read 2026-10-23
  • CNAweakness (CWE)CWE-287known since 2026-10-23
  • NVDweakness (CWE)CWE-347read 2026-10-23
  • FIRST EPSSEPSS score1.7 %2026-11-09
  • OSVaffected packages—
  • GitHub AdvisoriesadvisoryHIGH2023-07-07

Identifiers

Technical details

CVSS v3 Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
Published
2018-07-24
Last Modified
2026-06-17
NVD status
Modified
GitHub Advisory
GHSA-7gh2-8q93-87hp

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 2026-11-09, 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), with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N.

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