CVE-2026-65879
Unauthenticated mail-relay via hardcoded secret in SP Page Builder (<6.7.1).
Is CVE-2026-65879 being exploited?
Not confirmed. CVE-2026-65879 does not appear in CISA's Known Exploited Vulnerabilities catalog, which records only exploitation that has been observed and reported publicly. That is evidence of absence of a report, not evidence the flaw is unattacked. EPSS currently estimates a 0.28% probability of exploitation in the next 30 days.
How severe is CVE-2026-65879?
CVE-2026-65879 is rated Critical with a CVSS score of 9.8. Severity describes how bad exploitation would be, not how likely it is: pair it with exploitation evidence before deciding what to patch first.
Is there a patch for CVE-2026-65879?
Yes. A fix has been recorded for CVE-2026-65879. The vendor advisory is the authority on the exact fixed version — apply it from there rather than from a summary.
What does CVE-2026-65879 affect?
CVE-2026-65879 affects JoomShaper SP Page Builder < 6.7.1, Joomla sites using SP Page Builder, Web hosts allowing outbound SMTP from affected sites. Confirm the exact affected versions against the vendor advisory before deciding you are exposed.
What should I do about CVE-2026-65879?
Update SP Page Builder to >=6.7.1; block outbound SMTP and audit form handlers.
Exploitation status reflects CISA's KEV catalog as we last synced it. Check the catalog directly.
Unauthenticated attackers can forge form 'From' addresses and relay email via affected sites, enabling phishing, spam, domain abuse and reputational blacklisting.
Immediate action required
- affected1.0.0-6.7.0
As published in the CVE Program record. A version outside these ranges is not a statement that it is unaffected — vendors sometimes understate a range, and distribution-backported builds carry upstream numbers that do not reflect what was patched into them.