On this page

Atomicorp WAF Research Note: CVE-2026-61979

WordPress SAML SP Single Sign On plugin <= 5.4.3 - Privilege Escalation vulnerability

CVE Details

Status: Attack Blocked by Atomicorp
  • Protection status: Understanding Atomicorp WAF Protection Status
  • CVE: CVE-2026-61979
  • Name: WordPress SAML SP Single Sign On plugin <= 5.4.3 - Privilege Escalation vulnerability
  • Severity: High
  • CVSS: 8.1 (v3.1) (High)
  • CVSS version: 3.1
  • CVSS source: Patchstack CNA
  • CVSS vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
    • Attack vector: Network
    • Attack complexity: High
    • Privileges required: None
    • User interaction: None
    • Scope: Unchanged
    • Confidentiality impact: High
    • Integrity impact: High
    • Availability impact: High
  • CWE: CWE-266 — Incorrect Privilege Assignment
  • Vendor: miniOrange
  • Vulnerable product: SAML SP Single Sign On
  • CVE published: 2026-08-13
  • CVE last modified: 2026-08-14
  • EPSS: 0.0028; 20.1th percentile (FIRST )
  • Latest Update: 2026-08-21
  • Selected Rule IDs observed: 300022
  • Matching rules: 1; rules with blocking actions: 1
  • Would-block Rule IDs: 300022
  • Request surfaces inspected: Request URI

Vulnerability Description

Unauthenticated Privilege Escalation in SAML SP Single Sign On <= 5.4.3 versions.

  1. Maintain the observed Atomicorp protections. Keep your Atomicorp commercial rules current and confirm that the selected observed rules (300022 ) have not been locally disabled. Atomicorp commercial rules are enabled by default. If you use Atomic WAF, review the applicable policy and rule settings.

  2. Apply the vendor’s remediation. WAF protection is defense in depth and does not replace upgrading or following the affected vendor’s guidance.

    • Affected versions: miniOrange SAML SP Single Sign On versions through 5.4.3.
    • CNA guidance source: Patchstack
    • Vendor recommendation: Update the WordPress SAML SP Single Sign On Plugin to the latest available version (at least 5.4.4).

  3. Validate after changes. Confirm rule updates are current, review WAF events for the affected application, and test application behavior after vendor upgrades, mitigations, or local policy changes.

Research Notes

Atomicorp WAF protections are designed around attack techniques and exploit behaviors, allowing existing protections to apply across multiple vulnerabilities without requiring a unique rule for every CVE.

Public Vulnerability References

Test or Research Source

Research Note Context

This research note documents exploit-technique analysis associated with this vulnerability and references Atomicorp WAF protections observed during engineering review, testing, or validation activities.

Atomicorp security controls are generally designed to identify and mitigate attack techniques and exploit behaviors rather than individual CVE identifiers. As a result, protections developed for one vulnerability may also apply to related attack variants and future vulnerabilities using similar techniques.

Learn More

Atomicorp develops commercially supported security technologies for web applications, servers, endpoints, workloads, and legacy enterprise platforms.

Organizations interested in protecting systems against exploit techniques associated with vulnerabilities such as this one can learn more about:

  • Atomic ModSecurity Rules: commercially maintained WAF rules for ModSecurity deployments, including protections for web attacks, bots, scanners, malware, exploitation attempts, and emerging vulnerability classes.
  • Atomic WAF: an enterprise web application firewall with Atomicorp rules, centralized management, reporting, authentication controls, and operational tooling.
  • Atomic ModSecurity Integrator: a special licensing option for MSPs, MSSPs, OEMs, VARs, reverse proxy providers, and other integrators who want to incorporate Atomicorp ModSecurity rule technology into their own products or services.
  • Atomic OSSEC: an enterprise OSSEC-based intrusion detection, compliance, and security monitoring platform.
  • Atomic Protector: workload protection for Linux, web, cloud, data center, and hybrid environments.

For additional information, product evaluations, or technical discussions, visit https://www.atomicorp.com/ or https://modsecurity.io/ .