Widely deployed enterprise data governance service; high severity; privilege escalation via SSRF could impact many organizations.
CVE-2026-26139
SSRF flaw in Microsoft Purview enables privilege escalation
Is CVE-2026-26139 being exploited?
Not confirmed. CVE-2026-26139 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 0.55% probability of exploitation in the next 30 days.
How severe is CVE-2026-26139?
CVE-2026-26139 is rated High with a CVSS score of 8.6. 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-2026-26139?
Yes. A fix has been recorded for CVE-2026-26139. The vendor advisory is the authority on the exact fixed version — apply it from there rather than from a summary.
What does CVE-2026-26139 affect?
CVE-2026-26139 affects Microsoft Purview. Confirm the exact affected versions against the vendor advisory before deciding you are exposed.
What should I do about CVE-2026-26139?
Patch when released; monitor Purview logs and outbound activity.
Exploitation status reflects CISA's KEV catalog as we last synced it. Check the catalog directly.
Attacker can exploit SSRF to escalate privileges across the Purview environment via the network.
Patch when possible