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PatchSiren cyber security CVE debrief

CVE-2026-39713 mailercloud CVE debrief

A Missing Authorization vulnerability was found in the mailercloud Mailercloud – Integrate webforms and synchronize website contacts plugin. This issue allows for Exploiting Incorrectly Configured Access Control Security Levels and affects versions from n/a through <= 1.0.7. The vulnerability has a CVSS score of 5.3 and a severity of MEDIUM. Users should verify their installations and apply necessary patches or updates.

Vendor
mailercloud
Product
Mailercloud – Integrate webforms and synchronize website contacts
CVSS
MEDIUM 5.3
CISA KEV
Not listed in stored evidence
Original CVE published
2026-04-08
Original CVE updated
2026-07-24
Advisory published
2026-04-08
Advisory updated
2026-07-24

Who should care

Users of the mailercloud Mailercloud – Integrate webforms and synchronize website contacts plugin should be aware of this vulnerability and take necessary actions to protect their installations. This includes verifying plugin versions, applying patches or updates, and monitoring for suspicious activity.

Technical summary

The CVE-2026-39713 vulnerability has a CVSS score of 5.3 and a severity of MEDIUM. It was published on 2026-04-08T09:16:44.267Z and last modified on 2026-07-24T20:10:00.147Z. The vulnerability is caused by a Missing Authorization issue in the mailercloud Mailercloud – Integrate webforms and synchronize website contacts plugin, which allows for Exploiting Incorrectly Configured Access Control Security Levels. The issue affects versions from n/a through <= 1.0.7.

Defensive priority

MEDIUM

Recommended defensive actions

  • Inventory and verify the mailercloud Mailercloud – Integrate webforms and synchronize website contacts plugin version
  • Apply the necessary patches or updates to fix the vulnerability
  • Monitor for any suspicious activity related to the plugin
  • Review compensating controls for exposed systems while remediation is scheduled and verified
  • Check relevant monitoring, detection, and logs for exposed assets that need extra review
  • Track exceptions, retest remediated assets, and close the item only after evidence is documented
  • Confirm whether affected product deployments exist in managed environments and assign an owner for follow-up

Evidence notes

The CVE record was published on 2026-04-08T09:16:44.267Z and was last modified on 2026-07-24T20:10:00.147Z. The NVD entry is currently Deferred. The vulnerability affects versions from n/a through <= 1.0.7 of the mailercloud Mailercloud – Integrate webforms and synchronize website contacts plugin. Evidence is limited to public CVE and NVD information.

Sources and references

Verified primary and authoritative sources

  • CVE-2026-39713 CVE Program record

    Publisher, destination, and source semantics verified

    URL: https://www.cve.org/CVERecord?id=CVE-2026-39713

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

  • CVE-2026-39713 NVD vulnerability detail

    Publisher, destination, and source semantics verified

    URL: https://nvd.nist.gov/vuln/detail/CVE-2026-39713

    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.