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CVE-2026-24545 Nikki Blight CVE debrief

A Missing Authorization vulnerability in the QR Redirector WordPress plugin (versions through 2.0.3) allows attackers with low privileges to exploit incorrectly configured access control security levels. The vulnerability, classified as CWE-862, enables authenticated users to perform unauthorized actions due to broken access control mechanisms. The issue was published on May 25, 2026, and modified on May 26, 2026. The CVSS 3.1 score of 4.3 (Medium severity) reflects network attack vector, low attack complexity, low privileges required, no user interaction needed, and impacts to integrity only. No known exploitation in the wild or ransomware campaign use has been documented.

Vendor
Nikki Blight
Product
QR Redirector
CVSS
MEDIUM 4.3
CISA KEV
Not listed in stored evidence
Original CVE published
2026-05-25
Original CVE updated
2026-07-24
Advisory published
2026-05-25
Advisory updated
2026-07-24

Who should care

WordPress site administrators using QR Redirector plugin; security teams managing WordPress installations; developers maintaining WordPress plugins with role-based access control requirements

Technical summary

The QR Redirector plugin for WordPress fails to properly validate user capabilities before executing sensitive operations. Authenticated users with low privileges can exploit this weakness to perform actions beyond their intended authorization scope. The vulnerability stems from insufficient access control checks (CWE-862) in plugin functionality through version 2.0.3. Attack complexity is low, requiring no user interaction, with network-based exploitation possible. The integrity impact is rated low, with no confidentiality or availability impact per CVSS scoring.

Defensive priority

medium

Recommended defensive actions

  • Update QR Redirector WordPress plugin to version 2.0.4 or later if available
  • Review and restrict user role permissions to enforce principle of least privilege
  • Audit plugin access control configurations for unauthorized capability grants
  • Monitor WordPress admin logs for anomalous activity from low-privilege accounts
  • Consider implementing additional authorization checks via WordPress capabilities API for custom roles

Evidence notes

Vulnerability identified through Patchstack security research. NVD status marked as 'Deferred'. CVSS vector confirms authenticated attack scenario with integrity impact.

Sources and references

Verified primary and authoritative sources

  • CVE-2026-24545 CVE Program record

    Publisher, destination, and source semantics verified

    URL: https://www.cve.org/CVERecord?id=CVE-2026-24545

    CVE Program - Official CVE Program record with source-provided CVE metadata.

  • CVE-2026-24545 NVD vulnerability detail

    Publisher, destination, and source semantics verified

    URL: https://nvd.nist.gov/vuln/detail/CVE-2026-24545

    NIST National Vulnerability Database - Official NIST NVD detail page and source-specific vulnerability assessment.

Methodology and review provenance

AI-assisted synthesis based on stored public vulnerability evidence. System validation, approval state, and publication status do not by themselves establish human review of this revision. PatchSiren helps prioritize defensive review and does not prove exposure or remediation on any system.