CVE-2026-58639 json
Microsoft SharePoint Server Spoofing Vulnerability
published 2026-08-11 2 mo ago modified 2026-10-30 9 d ago also EUVD-2026-56775
- cvss
- 6.5
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.9%
- EPSS 0.9% chance of exploitation in 30 days, percentile 60%
- public exploits
- 0
- none known
Summary
Server-side request forgery (ssrf) in Microsoft Office SharePoint allows an authorized attacker to perform spoofing over a network.
Patch / fix
- Microsoft Microsoft SharePoint Enterprise Server 2016 16.0.5565.1001
- Microsoft Microsoft SharePoint Server 2019 16.0.10417.20198
- Microsoft Microsoft SharePoint Server Subscription Edition 16.0.19725.20522
CISA SSVC
- Exploitation
- none
- Automatable
- no
- Technical impact
- partial
- Assessed
- 2 mo ago
Exploit prediction
0.91% chance of exploitation in the next 30 days, higher than 60% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 3.1 | 6.5 | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N/E:U/RL:O/RC:C |
| CNA | 3.1 | 6.5 | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N |
Affected products
- Microsoft Microsoft SharePoint Enterprise Server 2016
- Microsoft Microsoft SharePoint Server 2019
- Microsoft Microsoft SharePoint Server Subscription Edition
Classification
- Weakness
-
- CWE-918 Server-Side Request Forgery
References
-
msrc.microsoft.com
/update-guide/vulnerability/CVE-2026-58639
vendor-advisory, patch
Sources
- CVE List CVE-2026-58639
- NVD CVE-2026-58639
Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.