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PatchSiren cyber security CVE debrief

CVE-2026-54811 Tips and Tricks HQ CVE debrief

CVE-2026-54811 is a critical vulnerability in the WP eMember plugin, with a CVSS score of 9.3. It allows unauthenticated attackers to inject malicious SQL code, potentially leading to data breaches and system compromise. The vulnerability was published on June 17, 2026, and immediately gained attention due to its severity. WP eMember plugin users should take immediate action to protect their installations. This vulnerability is a prime example of the importance of keeping software up-to-date and implementing robust security measures. The exploit's impact could be significant if not addressed promptly.

Vendor
Tips and Tricks HQ
Product
WP eMember
CVSS
CRITICAL 9.3
CISA KEV
Not listed in stored evidence
Original CVE published
2026-06-17
Original CVE updated
2026-06-17
Advisory published
2026-06-17
Advisory updated
2026-06-17

Who should care

WP eMember plugin users, WordPress administrators, cybersecurity professionals, and organizations using the affected plugin versions should be aware of this vulnerability and take necessary precautions.

Technical summary

CVE-2026-54811 is an unauthenticated SQL injection vulnerability in the WP eMember plugin versions before v10.9.4. The vulnerability has a CVSS score of 9.3 and is classified as critical. The CVSS vector is CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:L, indicating a high impact on confidentiality and a moderate attack complexity. The CWE-89 weakness is associated with this vulnerability.

Defensive priority

high

Recommended defensive actions

  • Update WP eMember plugin to version v10.9.4 or later
  • Implement robust security measures, such as web application firewalls (WAFs)
  • Monitor plugin and WordPress core updates
  • Use secure protocols for data transmission
  • Limit database privileges for the WP eMember plugin
  • Regularly back up critical data
  • Consider using security plugins for WordPress

Evidence notes

The information provided is based on data from the National Vulnerability Database (NVD) and Patchstack. The CVE record and NVD detail pages provide official information about the vulnerability. The Patchstack reference provides additional context and mitigation guidance.

Sources and references

Verified primary and authoritative sources

  • CVE-2026-54811 CVE Program record

    Publisher, destination, and source semantics verified

    URL: https://www.cve.org/CVERecord?id=CVE-2026-54811

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

  • CVE-2026-54811 NVD vulnerability detail

    Publisher, destination, and source semantics verified

    URL: https://nvd.nist.gov/vuln/detail/CVE-2026-54811

    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.