# CVE-2026-75807 — cyberlord92 SAML Single Sign On – SSO Login

> As of 2026-08-29, CVE-2026-75807 is a HIGH-severity vulnerability in cyberlord92 SAML Single Sign On – SSO Login, CVSS v3.1 7.5. No Threadlinqs-tracked threat campaign has been attributed to CVE-2026-75807 as of 2026-08-29; the identifier is re-checked against the Threadlinqs threat corpus on every daily ingest.

**Last updated:** 2026-08-29

## What is CVE-2026-75807?

The SAML Single Sign On – SSO Login plugin for WordPress is vulnerable to Authentication Bypass in versions up to, and including, 5.4.6. This is due to the mo_saml_login_validate() ACS handler persisting the X.509 certificate extracted from an incoming SAMLResponse into the mo_saml_required_certificate option before the signature-validation verdict is enforced, because mo_saml_find_certificate() returns false on a fingerprint mismatch rather than halting execution. This makes it possible for unauthenticated attackers to overwrite the plugin's stored IdP signing certificate with an attacker-controlled value, and subsequently forge SAML assertions for any WordPress account — including administrators — to obtain a fully privileged session. Note: The exploit requires the administrator to perform a repair after receiving the test_config_error_wpsamlerr004 error message during the test configuration.

The record classifies CVE-2026-75807 under weakness class [CWE-287](https://intel.threadlinqs.com/cwe/CWE-287). Its CVSS v3 base vector states that the flaw is reachable remotely over the network, needs no prior authentication, needs a user to take an action first, and has high impact on confidentiality, integrity, availability. 1 affected-product entry is recorded, across 1 vendor, listed below. The identifier was first published 37 days ago.

## Severity and exploitation probability

- **CVSS v3.1 base score:** 7.5 — HIGH (`CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H`)
- **CISA KEV:** Not listed in the CISA Known Exploited Vulnerabilities catalog
- **Threadlinqs priority:** 3.8/10 — a Threadlinqs composite of the CVSS base score, the EPSS percentile and public exploit availability
- **Published:** 2026-08-29

## Is CVE-2026-75807 being exploited?

It currently carries a trending score of 30 in the Threadlinqs vulnerability feed.

## Affected products and versions

- **cyberlord92**: SAML Single Sign On – SSO Login

## How to fix CVE-2026-75807

No vendor patch reference has been recorded for CVE-2026-75807 in the tracked sources. Follow the references below for a fix, and treat the products listed above as exposed until the vendor states otherwise.

## Threat activity tracking CVE-2026-75807

No threat campaign in the Threadlinqs corpus currently references CVE-2026-75807, in its CVE list or as an indicator. The linkage is recomputed from the live corpus on every daily ingest, so this section fills in as soon as a tracked campaign cites the identifier.

## Sources

Enriched from CVE.org, NVD, GitHub Security Advisories. Last verified by Threadlinqs on 2026-08-30. This product uses the NVD API but is not endorsed or certified by the NVD.

**Other references**

- [wordfence.com](https://www.wordfence.com/threat-intel/vulnerabilities/id/9baea072-2c07-40b6-8410-2ebe752b0874?source=cve)
- [plugins.trac.wordpress.org](https://plugins.trac.wordpress.org/browser/miniorange-saml-20-single-sign-on/tags/5.4.6/class-mo-saml-login-validate.php#L236)
- [plugins.trac.wordpress.org (class mo saml login validate)](https://plugins.trac.wordpress.org/browser/miniorange-saml-20-single-sign-on/tags/5.4.6/class-mo-saml-login-validate.php#L292)
- [plugins.trac.wordpress.org (class mo saml utilities)](https://plugins.trac.wordpress.org/browser/miniorange-saml-20-single-sign-on/tags/5.4.6/class-mo-saml-utilities.php#L739)
- [plugins.trac.wordpress.org (mo saml settings page)](https://plugins.trac.wordpress.org/browser/miniorange-saml-20-single-sign-on/tags/5.4.6/mo-saml-settings-page.php#L141)

Canonical: https://intel.threadlinqs.com/cve/CVE-2026-75807
Full detection coverage and IOCs for threats exploiting CVE-2026-75807 via the Threadlinqs MCP server (Purple tier): https://intel.threadlinqs.com/mcp