Skip to main content
Press slash or control plus K to focus the search. Use the arrow keys to navigate results and press enter to open a threat.
Reconnecting to live updates…
EPSS 0.5%top 58%

CVE-2026-41106: CWE-601: URL Redirection to Untrusted Site ('Open Redirect') in Microsoft Microsoft 365 Copilot

0
Critical
VulnerabilityCVE-2026-41106cvecve-2026-41106cwe-601gcve
Published: 07/02/2026 (07/02/2026, 22:18:57 UTC)
Source: CVE Database V5
Vendor/Project: Microsoft
Product: Microsoft 365 Copilot

Description

CVE-2026-41106 is an open redirect vulnerability in Microsoft 365 Copilot that allows unauthorized attackers to redirect users to untrusted sites, potentially enabling privilege escalation over a network. The vulnerability has a critical severity with a CVSS score of 9.3. Microsoft has issued an official fix for this cloud service vulnerability.

CVSS v3.1

Score 9.3critical

Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
Required
Scope
Changed
Confidentiality
High
Integrity
High
Availability
None
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:N/E:U/RL:O/RC:C

AI-Powered Analysis

Machine-generated threat intelligence

AILast updated: 08/16/2026, 13:23:57 UTC

Technical Analysis

This vulnerability (CVE-2026-41106) involves an open redirect flaw (CWE-601) in Microsoft 365 Copilot, a cloud-hosted service. An attacker can exploit this flaw to redirect users to untrusted external URLs, which may lead to privilege escalation in a network context. The vulnerability has a critical CVSS 3.1 score of 9.3, indicating high impact on confidentiality and integrity. Microsoft has released an official fix and manages remediation on the cloud service side.

Potential Impact

Successful exploitation can lead to unauthorized privilege escalation by redirecting users to malicious sites, compromising confidentiality and integrity of user sessions. Availability is not impacted. No known exploits are reported in the wild at this time.

Mitigation Recommendations

Microsoft has released an official fix for this vulnerability and manages remediation for the cloud-hosted Microsoft 365 Copilot service. Users and administrators should ensure their service is updated per Microsoft's advisory at https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-41106. No additional action is required beyond applying the official fix.

Pro Console: star threats, build custom feeds, automate alerts via Slack, email & webhooks.Upgrade to Pro

Technical Details

Data Version
5.2
Assigner Short Name
microsoft
Date Reserved
2026-04-16T19:12:36.196Z
Cvss Version
3.1
State
PUBLISHED
Remediation Level
official-fix
Is Cloud Service
true
Vendor Advisory Urls
[{"url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-41106","vendor":"Microsoft"}]

Threat ID: 6a46e7f427e9c797193afcb1

Added to database: 07/02/2026, 22:36:36 UTC

Last enriched: 08/16/2026, 13:23:57 UTC

Last updated: 08/17/2026, 00:41:12 UTC

Views: 153

Community Reviews

0 reviews

Crowdsource mitigation strategies, share intel context, and vote on the most helpful responses. Sign in to add your voice and help keep defenders ahead.

Sort by
Loading community insights…

Want to contribute mitigation steps or threat intel context? Sign in or create an account to join the community discussion.

Actions

PRO

Updates to AI analysis require Pro Console access. Upgrade inside Console → Billing.

Please log in to the Console to use AI analysis features.

Need more coverage?

Upgrade to Pro Console for AI refresh and higher limits.

For incident response and remediation, OffSeq services can help resolve threats faster.

Latest Threats

Breach by OffSeqOFFSEQFRIENDS — 25% OFF

Check if your credentials are on the dark web

Instant breach scanning across billions of leaked records. Free tier available.

Scan now
OffSeq TrainingCredly Certified

Lead Pen Test Professional

Technical5-day eLearningPECB Accredited
View courses