VDB
CVE-2026-26137
CVE-2026-26137
PUBLISHED
CVSS 9.899999618530273 CRITICAL
Server-side request forgery (ssrf) in Microsoft 365 Copilot's Business Chat allows an authorized attacker to elevate privileges over a network.
EPSS 0.04% · 13.7th percentile
Risk Scores
CVSS v3.1
9.899999618530273
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:L/E:U/RL:O/RC:C
EPSS Score
0.04%
13.7th percentile
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| microsoft | exchange_online | *, -, - |
| Microsoft | Microsoft Exchange Online | -, -, - |
| microsoft | 365_copilot_chat |
Timeline
- Mar 10, 2026 CVE Published
- Mar 19, 2026 PoC Published
- Mar 20, 2026 EPSS Score
- Mar 20, 2026 Security Advisory
- Mar 21, 2026 EPSS Score
- Mar 22, 2026 EPSS Score
- Mar 22, 2026 Coalition ESS Score
- Mar 23, 2026 EPSS Score
- Mar 24, 2026 EPSS Score
- Mar 25, 2026 EPSS Score
- Mar 26, 2026 CVE Updated
- Mar 29, 2026 Security Advisory