CVE-2026-55671 ZITADEL: Server-Side Request Forgery (SSRF) and Denylist Bypass in Outgoing HTTP Components

ZITADEL is an open source identity management platform. From 4.0.0-rc.1 through 4.15.1, ZITADEL's HTTP notification channels, OIDC BackChannel Logout, and SAML metadata URL fetches do not consistently validate user-defined URLs against protected denylist handling, allowing server-side requests to...

ZITADEL: Server-Side Request Forgery (SSRF) and Denylist Bypass in Outgoing HTTP Components

Summary A Server-Side Request Forgery SSRF vulnerability was discovered in Zitadel affecting: HTTP Notification Channels: Used as an alternative to SMTP/Twilio configurations, sending payloads to user-defined URLs via HTTP POST webhooks. OIDC BackChannel Logout: Terminates sessions across differe...

Server-side Request Forgery (SSRF)

Overview Affected versions of this package are vulnerable to Server-side Request Forgery SSRF in the processing of user-supplied URLs in outgoing HTTP components, including notification channels, OIDC backchannel logout, and SAML metadata fetches. An attacker can access internal network resources...

PT-2026-42584

Summary The request-filtering-agent SSRF protection was non-functional in the four notification webhook plugins Slack, Discord, Mattermost, Teams because httpAgent / httpsAgent were passed as part of the request body rather than the axios config. An authenticated user with hook-creation permissio...

How Cybercriminals Exploit Notification Channels

Cybercriminals are always looking for new ways to take advantage of people. One effective method they use is…...

ThreatMapper - Identify Vulnerabilities In Running Containers, Images, Hosts And Repositories

The Deepfence Runtime Threat Mapper is a subset of the Deepfence cloud native workload protection platform, released as a community edition. This community edition empowers the users with following features: 1. Visualization: Visualize kubernetes clusters, virtual machines, containers and images,...

New Relic: Adding a new user discloses their full name in the "Users" section of NR Alerts notification channels page

The NR developers did a really good job at restricting me from finding out info about other user accounts through the NR Synthetics settings - so far I haven't found a way to bypass it yet 😉. There exists another way to obtain this information about other user accounts, and it has to do with the...

Security Analysis with Bamboo Plugin

Build Management with Bamboo In the process of continuous integration, a code repository is automatically built and tested by a CI service when code is pushed or committed to the repository. This enables automated testing, tracking, and reporting of build errors and boosts the productivity of...