CVE-2026-56191

Improper authentication in Microsoft Exchange Online allows an unauthorized attacker to perform tampering over a network...

CVE-2026-56191 Microsoft Exchange Online Tampering Vulnerability

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CVE-2026-56191

Improper authentication in Microsoft Exchange Online allows an unauthorized attacker to perform tampering over a network...

CVE-2026-56191

Technical details about CVE-2026-56191 are not provided in the connected documents. Public information here only cites improper authentication and tampering risk for Microsoft Exchange Online. Monitor for updates from official advisories.

EUVD-2026-48458

Improper authentication in Microsoft Exchange Online allows an unauthorized attacker to perform tampering over a network...

PT-2026-64208

Improper authentication in Microsoft Exchange Online allows an unauthorized attacker to perform tampering over a network...

CVE-2026-16807

creationtimestamp| type| source ---|---|--- 2026-07-23 22:42:04+00:00| seen| https://infosec.exchange/users/vuldb/statuses/116971701809054544 2026-07-24 02:05:03+00:00| seen| https://bsky.app/profile/securityonline.bsky.social/post/3mrebai6xxb2l...

CVE-2026-63359

The Appriss Insights Equifax Victim Information Notification Exchange VINE applications allow an unauthenticated attacker to send a specially-crafted request to bypass the login page, access other users' credentials, take over other user accounts, access sensitive PII, and dump other information...

Microsoft Exchange Online Tampering Vulnerability

Improper authentication in Microsoft Exchange Online allows an unauthorized attacker to perform tampering over a network...

Microsoft Exchange - Pre-Auth SSRF / ACL Bypass (ProxyNotFound)

Microsoft Exchange Server contains a remote code execution caused by improper input validation in the server component, letting remote attackers execute arbitrary code, exploit requires network access to the server. id: CVE-2021-28481 info: name: Microsoft Exchange - Pre-Auth SSRF / ACL Bypass...

Microsoft Exchange Server - Cross-Site Scripting

Microsoft Exchange Server, or OWA, is vulnerable to a cross-site scripting vulnerability in refurl parameter of frowny.asp. id: CVE-2021-31195 info: name: Microsoft Exchange Server - Cross-Site Scripting author: infosecsanyam severity: medium description: Microsoft Exchange Server, or OWA, is...

Microsoft Exchange - Pre-Auth SSRF / ACL Bypass (ProxyNotFound)

Microsoft Exchange Server contains a remote code execution caused by improper input validation in the server component, letting remote attackers execute arbitrary code, exploit requires network access to the server. id: CVE-2021-28480 info: name: Microsoft Exchange - Pre-Auth SSRF / ACL Bypass...

Microsoft Exchange - Authentication Bypass

Microsoft Exchange Server Information Disclosure Vulnerability. This vulnerability enables an attacker to bypass authentication and gain access to the Exchange Server's internal. id: CVE-2021-33766 info: name: Microsoft Exchange - Authentication Bypass author: daffainfo severity: high description...

Microsoft OWA Exchange Server 2003 - 'redir.asp' Open Redirection

Open redirect vulnerability in exchweb/bin/redir.asp in Microsoft Outlook Web Access OWA for Exchange Server 2003 SP2 aka build 6.5.7638 allows remote attackers to redirect users to arbitrary web sites and conduct phishing attacks via a URL in the URL parameter. id: CVE-2008-1547 info: name:...

NPM: n8n: Privilege Escalation and Code Execution via Full Public API Key Scope Assignment to Token Exchange JWTs

NPM: n8n: Privilege Escalation and Code Execution via Full Public API Key Scope Assignment to Token Exchange JWTs vulnerability discovered by ? in WordPress Npm n8n versions 2.29.8...

n8n: Privilege Escalation and Code Execution via Full Public API Key Scope Assignment to Token Exchange JWTs

Impact JWTs issued through the Token Exchange module were assigned all Public API key scopes, regardless of the acting user's actual role. A low-privileged user who could obtain a valid external JWT trusted by a configured issuer could therefore use the resulting access token to invoke...

Duplicate Advisory: n8n: Privilege Escalation and Code Execution via Full Public API Key Scope Assignment to Token Exchange JWTs

Duplicate Advisory This advisory has been withdrawn because it is a duplicate of GHSA-777w-rpr6-c52h. This link is maintained to preserve external references. Original Description n8n before 2.30.1 and 2.29.8 assigns all Public API key scopes to JWTs issued through the Token Exchange module...

CVE-2026-65595

n8n before 2.30.1 and 2.29.8 assigns all Public API key scopes to JWTs issued through the Token Exchange module regardless of the acting user's role. On instances where the Token Exchange feature and Public API are enabled, a low-privileged user who can obtain a valid external JWT trusted by a...

CVE-2026-65595 n8n before 2.30.1 Privilege Escalation via Token Exchange

n8n before 2.30.1 and 2.29.8 assigns all Public API key scopes to JWTs issued through the Token Exchange module regardless of the acting user's role. On instances where the Token Exchange feature and Public API are enabled, a low-privileged user who can obtain a valid external JWT trusted by a...

CVE-2026-65595 n8n before 2.30.1 Privilege Escalation via Token Exchange

n8n before 2.30.1 and 2.29.8 assigns all Public API key scopes to JWTs issued through the Token Exchange module regardless of the acting user's role. On instances where the Token Exchange feature and Public API are enabled, a low-privileged user who can obtain a valid external JWT trusted by a...