Affects Microsoft Office SharePoint, a widely used enterprise product; SSRF enabling privilege escalation could impact many organizations.
CVE-2026-70326
Authenticated SSRF in SharePoint enabling internal network access and privilege escalation.
Is CVE-2026-70326 being exploited?
Not confirmed. CVE-2026-70326 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 0.59% probability of exploitation in the next 30 days.
How severe is CVE-2026-70326?
CVE-2026-70326 is rated High. 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-2026-70326?
Yes. A fix has been recorded for CVE-2026-70326. The vendor advisory is the authority on the exact fixed version — apply it from there rather than from a summary.
What does CVE-2026-70326 affect?
CVE-2026-70326 affects Microsoft Office SharePoint. Confirm the exact affected versions against the vendor advisory before deciding you are exposed.
What should I do about CVE-2026-70326?
Apply vendor patch/mitigations when available, restrict SharePoint access, segment network, monitor logs.
Exploitation status reflects CISA's KEV catalog as we last synced it. Check the catalog directly.
Authenticated server-side request forgery allows access to internal resources and elevation of privileges on SharePoint and connected services.
Immediate action required
- affected>= 16.0.0 and < 16.0.19725.20522
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.