Baitaphish
Security intelligence
SearchLatest briefing
CVE Explorer

CVE-2026-15981

The SAML Single Sign On – SSO Login plugin for WordPress is vulnerable to Authentication Bypass in all versions up to, and including, 5.4.4. This is due to the mo_saml_validate_signature() function performing a loose boolean check on the raw tri-state integer returned by PHP's openssl_verify(), causing an error return value of -1 to be evaluated as truthy and therefore treated as a successful signature verification. This makes it possible for unauthenticated attackers to log in as any existing W
Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:e66625806f6673d1320c4ed7258053fa39abf38ec7751f0511bad1f157b2d887
Known exploited
Not asserted
Disputed
No
Stale source
No
Conflicts
0

Affected products and versions

1 source assertion
{"defaultStatus":"unaffected","product":"SAML Single Sign On – SSO Login","vendor":"cyberlord92","versions":[{"lessThanOrEqual":"5.4.4","status":"affected","version":"0","versionType":"semver"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:e409780a8f50ee0d1257ea65c25522f0b21ad5b52e63413ce4f93afe5647c0ab · sha256:a3d2d08b72c9a90d… · /containers/cna/affected/0

Provider-owned CVSS observations

1 source assertion
{"metric":{"baseScore":9.8,"baseSeverity":"CRITICAL","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","version":"3.1"},"metric_type":"cvssV3_1"}
  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:e409780a8f50ee0d1257ea65c25522f0b21ad5b52e63413ce4f93afe5647c0ab · sha256:a3d2d08b72c9a90d… · /containers/cna/metrics/0/cvssV3_1

CWE assertions

1 source assertion
{"cweId":"CWE-287","description":"CWE-287 Improper Authentication","lang":"en","type":"CWE"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:e409780a8f50ee0d1257ea65c25522f0b21ad5b52e63413ce4f93afe5647c0ab · sha256:a3d2d08b72c9a90d… · /containers/cna/problemTypes/0/descriptions/0

Source references

7 source assertions
{"url":"https://plugins.trac.wordpress.org/browser/miniorange-saml-20-single-sign-on/tags/5.4.4/class-mo-saml-login-validate.php#L118"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:e409780a8f50ee0d1257ea65c25522f0b21ad5b52e63413ce4f93afe5647c0ab · sha256:a3d2d08b72c9a90d… · /containers/cna/references/1
{"url":"https://plugins.trac.wordpress.org/browser/miniorange-saml-20-single-sign-on/tags/5.4.4/class-mo-saml-login-validate.php#L541"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:e409780a8f50ee0d1257ea65c25522f0b21ad5b52e63413ce4f93afe5647c0ab · sha256:a3d2d08b72c9a90d… · /containers/cna/references/5
{"url":"https://plugins.trac.wordpress.org/browser/miniorange-saml-20-single-sign-on/tags/5.4.4/class-mo-saml-utilities.php#L403"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:e409780a8f50ee0d1257ea65c25522f0b21ad5b52e63413ce4f93afe5647c0ab · sha256:a3d2d08b72c9a90d… · /containers/cna/references/2
{"url":"https://plugins.trac.wordpress.org/browser/miniorange-saml-20-single-sign-on/tags/5.4.4/includes/lib/SAML2Core/class-mo-saml-xml-security-dsig.php#L938"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:e409780a8f50ee0d1257ea65c25522f0b21ad5b52e63413ce4f93afe5647c0ab · sha256:a3d2d08b72c9a90d… · /containers/cna/references/3
{"url":"https://plugins.trac.wordpress.org/browser/miniorange-saml-20-single-sign-on/tags/5.4.4/includes/lib/SAML2Core/class-mo-saml-xml-security-key.php#L621"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:e409780a8f50ee0d1257ea65c25522f0b21ad5b52e63413ce4f93afe5647c0ab · sha256:a3d2d08b72c9a90d… · /containers/cna/references/4
{"url":"https://plugins.trac.wordpress.org/changeset/3611421/miniorange-saml-20-single-sign-on"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:e409780a8f50ee0d1257ea65c25522f0b21ad5b52e63413ce4f93afe5647c0ab · sha256:a3d2d08b72c9a90d… · /containers/cna/references/6
{"url":"https://www.wordfence.com/threat-intel/vulnerabilities/id/b412f60f-61ea-47b1-a3ef-17275f7951df?source=cve"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:e409780a8f50ee0d1257ea65c25522f0b21ad5b52e63413ce4f93afe5647c0ab · sha256:a3d2d08b72c9a90d… · /containers/cna/references/0

Attribution and limitations

  • CVE Program CVEList V5: Reproduce the MITRE copyright designation and CVE license in copies. Source →

Provider severity values are preserved separately. Baitaphish does not convert them into a risk rating, infer affected products, or treat EPSS as observed exploitation.

← Back to CVE Explorer