The Back Door Attackers Know About — and Most Security Teams Still Haven’t Closed

Every AI tool, workflow automation, and productivity app your employees connected to Google or Microsoft this year left something behind: a persistent OAuth token with no expiration date, no automatic cleanup, and in most organizations, no one watching it. Your perimeter controls don't see it. Yo...

PT-2026-37311

Name of the Vulnerable Software and Affected Versions Pocketbase versions prior to 0.22.42 Pocketbase versions prior to 0.37.4 Description An issue exists in the OAuth2 autolinking process where an attacker knowing a victim's email address can pre-create and link an unverified user by...

Cleartext Storage of Sensitive Information

Overview Affected versions of this package are vulnerable to Cleartext Storage of Sensitive Information via the /-/config HTTP API endpoint, where the clientsecret field in the Azure AD remote write OAuth configuration was not properly redacted. An attacker can obtain sensitive authentication...

Pelican Web UI Affected by a Privilege Escalation Attack

Background On April 2nd, 2026, a Claude coding agent alerted Pelican PI Brian Bockelman to a privilege escalation vulnerability affecting Pelican's Web User Interface WebUI for various versions between v7.21 and v7.24. Upon further investigation, the Pelican team discovered this attack allows any...

CVE-2026-6446

The My Social Feeds – Social Feeds Embedder plugin for WordPress is vulnerable to Sensitive Information Exposure in all versions up to and including 1.0.4 via the 'ttpgetaccounts' AJAX action. This is due to the complete absence of authorization checks no capability verification and nonce...

CVE-2026-42236

n8n is an open source workflow automation platform. Prior to versions 1.123.32, 2.17.4, and 2.18.1, the MCP OAuth client registration endpoint accepted unauthenticated requests and stored client data without adequate resource controls. An unauthenticated remote attacker could exhaust server memor...

CVE-2026-42235

n8n is an open source workflow automation platform. Prior to versions 1.123.32, 2.17.4, and 2.18.1, an unauthenticated attacker could register a malicious MCP OAuth client with a crafted clientname. If a victim user authorized the OAuth consent dialog and a second user subsequently revoked that...

DEBIAN-CVE-2026-42151

Prometheus is an open-source monitoring system and time series database. Prior to versions 3.5.3 and 3.11.3, the clientsecret field in the Azure AD remote write OAuth configuration storage/remote/azuread was typed as string instead of Secret. Prometheus redacts fields of type Secret when serving...

AZL-86610 CVE-2026-42151 affecting package telegraf for versions less than 1.31.0-22

Prometheus is an open-source monitoring system and time series database. Prior to versions 3.5.3 and 3.11.3, the clientsecret field in the Azure AD remote write OAuth configuration storage/remote/azuread was typed as string instead of Secret. Prometheus redacts fields of type Secret when serving...

CVE-2026-42151

Prometheus is an open-source monitoring system and time series database. Prior to versions 3.5.3 and 3.11.3, the clientsecret field in the Azure AD remote write OAuth configuration storage/remote/azuread was typed as string instead of Secret. Prometheus redacts fields of type Secret when serving...

CVE-2026-42236

n8n is an open source workflow automation platform. Prior to versions 1.123.32, 2.17.4, and 2.18.1, the MCP OAuth client registration endpoint accepted unauthenticated requests and stored client data without adequate resource controls. An unauthenticated remote attacker could exhaust server memor...

CVE-2026-42235 n8n: XSS via MCP OAuth client

n8n is an open source workflow automation platform. Prior to versions 1.123.32, 2.17.4, and 2.18.1, an unauthenticated attacker could register a malicious MCP OAuth client with a crafted clientname. If a victim user authorized the OAuth consent dialog and a second user subsequently revoked that...

CVE-2026-42230 n8n: Open Redirect in MCP OAuth Consent Flow

n8n is an open source workflow automation platform. Prior to versions 1.123.32, 2.17.4, and 2.18.1, the /mcp-oauth/register endpoint accepted OAuth client registrations without authentication, allowing arbitrary redirecturi values to be registered. When a user denies the MCP OAuth consent dialog,...

CVE-2026-42230 n8n: Open Redirect in MCP OAuth Consent Flow

n8n is an open source workflow automation platform. Prior to versions 1.123.32, 2.17.4, and 2.18.1, the /mcp-oauth/register endpoint accepted OAuth client registrations without authentication, allowing arbitrary redirecturi values to be registered. When a user denies the MCP OAuth consent dialog,...

CVE-2026-42151

Prometheus is an open-source monitoring system and time series database. Prior to versions 3.5.3 and 3.11.3, the clientsecret field in the Azure AD remote write OAuth configuration storage/remote/azuread was typed as string instead of Secret. Prometheus redacts fields of type Secret when serving...

JLSEC-2026-385

An improper authentication vulnerability exists in curl 7.33.0 to and including 7.82.0 which might allow reuse OAUTH2-authenticated connections without properly making sure that the connection was authenticated with the same credentials as set for this transfer. This affects SASL-enabled protocol...

CVE-2026-41425

A flaw was found in Authlib, a Python library for building OAuth and OpenID Connect servers. A remote attacker could exploit a missing Cross-Site Request Forgery CSRF protection on the cache feature within authlib.integrations.starletteclient.OAuth. This vulnerability allows an attacker to trick ...

PT-2026-36902

Name of the Vulnerable Software and Affected Versions n8n versions prior to 1.123.32 n8n versions prior to 2.17.4 n8n versions prior to 2.18.1 Description The '/mcp-oauth/register' endpoint allows OAuth client registrations without authentication, which permits the registration of arbitrary...

PT-2026-36896

Name of the Vulnerable Software and Affected Versions Prometheus versions prior to 3.5.3 Prometheus versions prior to 3.11.3 Description The client secret field in the Azure AD remote write OAuth configuration storage/remote/azuread was incorrectly typed as a string instead of a Secret...

CVE-2026-7679 YunaiV yudao-cloud OAuth2TokenServiceImpl.java getAccessToken improper authentication

A security flaw has been discovered in YunaiV yudao-cloud up to 2026.01. This impacts the function getAccessToken of the file yudao-module-system-biz/src/main/java/io/github/ruoyi/common/oauth2/service/impl/OAuth2TokenServiceImpl.java. Performing a manipulation results in improper authentication...