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PatchSiren cyber security CVE debrief

CVE-2026-65879 joomshaper.com CVE debrief

CVE-2026-65879 is an unauthenticated mail relay vulnerability in Joomla Extension SP Page Builder versions less than 6.7.1. The issue arises from a hardcoded secret that allows attackers to forge the mail from address of forms, potentially leading to email spoofing and other malicious activities. This vulnerability has a high impact on affected deployments, and users should apply patches or mitigations to prevent exploitation.

Vendor
joomshaper.com
Product
SP Page Builder extension for Joomla
CVSS
CRITICAL 9.8
CISA KEV
Not listed in stored evidence
Original CVE published
2026-07-27
Original CVE updated
2026-07-28
Advisory published
2026-07-27
Advisory updated
2026-07-28

Who should care

Users of Joomla Extension SP Page Builder versions less than 6.7.1 should apply patches to prevent unauthenticated mail relay attacks. Affected operators, platform administrators, vulnerability management teams, and security teams should review official advisories and take necessary actions to mitigate the vulnerability.

Technical summary

The vulnerability in SP Page Builder versions less than 6.7.1 stems from a hardcoded secret that enables unauthenticated mail relay. Attackers can exploit this by forging the mail from address of forms, potentially leading to email spoofing and other malicious activities. The hardcoded secret is a product-wide secret, and users should review official advisories for affected versions and apply patches or mitigations accordingly.

Defensive priority

High

Recommended defensive actions

  • Apply patches for SP Page Builder version 6.7.1 or later
  • Restrict access to mail relay functionality
  • Monitor for suspicious email activity
  • 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 2026-07-27T14:17:01.103Z and was last modified on 2026-07-27T20:32:11.620Z. The NVD entry is currently Deferred. Evidence is limited, and defenders should verify affected scope and vendor guidance. The hardcoded secret allows attackers to forge mail from addresses of forms, potentially leading to email spoofing. Users should review official advisories for affected versions and apply patches or mitigations accordingly.

Sources and references

Verified primary and authoritative sources

  • CVE-2026-65879 CVE Program record

    Publisher, destination, and source semantics verified

    URL: https://www.cve.org/CVERecord?id=CVE-2026-65879

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

  • CVE-2026-65879 NVD vulnerability detail

    Publisher, destination, and source semantics verified

    URL: https://nvd.nist.gov/vuln/detail/CVE-2026-65879

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

Supplemental references

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.