CVE-2026-26139
CVE-2026-26139 is a high-severity vulnerability in Microsoft Purview with a CVSS 3.x base score of 8.6. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-918.
Key facts
- Severity: High (CVSS 3.x base score 8.6)
- EPSS exploit prediction: 1% (42nd percentile)
- Actively exploited: Not listed in CISA KEV
- EU (EUVD) id: EUVD-2026-13186
- Weakness: CWE-918
- Affected product: Microsoft Purview
- Published:
- Last modified:
Description
Server-side request forgery (ssrf) in Microsoft Purview allows an unauthorized attacker to elevate privileges over a network.
Frequently asked questions
- What is CVE-2026-26139?
- Server-side request forgery (ssrf) in Microsoft Purview allows an unauthorized attacker to elevate privileges over a network.
- How severe is CVE-2026-26139?
- CVE-2026-26139 has a CVSS 3.x base score of 8.6, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability none.
- Is CVE-2026-26139 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (42nd percentile), an estimate of the probability of exploitation in the next 30 days.
- What products are affected by CVE-2026-26139?
- CVE-2026-26139 affects Microsoft Purview. See the affected-products list for the exact vulnerable versions.
- How do I fix CVE-2026-26139?
- Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
- Does CVE-2026-26139 have an EU (EUVD) identifier?
- Yes. CVE-2026-26139 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-13186.
- When was CVE-2026-26139 published?
- CVE-2026-26139 was published on 2026-03-19 and last updated on 2026-06-17.
References
Affected products (1)
- cpe:2.3:a:microsoft:purview:-:*:*:*:*:*:*:*
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