CVE-2026-106488

A flaw was found in plugin-auth-backend-module-oidc-provider. In deployments using email-based identity resolution with an OpenID Connect OIDC provider that allows unverified email addresses, an authenticated attacker can achieve privilege escalation by assuming another catalog identity. This...

EUVD-2026-94007

Backstage: Improper authentication in the OIDC provider...

CVE-2026-106488 Backstage: Improper authentication in the OIDC provider

Backstage is an open framework for building developer portals. Prior to 0.4.20, the @backstage/plugin-auth-backend-module-oidc-provider package is affected by improper authentication in the oidc provider. Deployments using OIDC email-based identity resolution with a provider that permits unverifi...

CVE-2026-106488 Backstage: Improper authentication in the OIDC provider

Backstage is an open framework for building developer portals. Prior to 0.4.20, the @backstage/plugin-auth-backend-module-oidc-provider package is affected by improper authentication in the oidc provider. Deployments using OIDC email-based identity resolution with a provider that permits unverifi...

CVE-2026-106488 Backstage: Improper authentication in the OIDC provider

Backstage is an open framework for building developer portals. Prior to 0.4.20, the @backstage/plugin-auth-backend-module-oidc-provider package is affected by improper authentication in the oidc provider. Deployments using OIDC email-based identity resolution with a provider that permits unverifi...

CVE-2026-106488

Backstage is an open framework for building developer portals. Prior to 0.4.20, the @backstage/plugin-auth-backend-module-oidc-provider package is affected by improper authentication in the oidc provider. Deployments using OIDC email-based identity resolution with a provider that permits unverifi...

PT-2026-107269

Name of the Vulnerable Software and Affected Versions Backstage versions prior to 0.4.20 Description The @backstage/plugin-auth-backend-module-oidc-provider package contains improper authentication within the OIDC provider. In deployments utilizing OIDC email-based identity resolution with a...

CVE-2026-106488: Improper Authentication

Backstage is an open framework for building developer portals. Prior to 0.4.20, the @backstage/plugin-auth-backend-module-oidc-provider package is affected by improper authentication in the oidc provider. Deployments using OIDC email-based identity resolution with a provider that permits unverifi...

CVE-2026-77776

Headroom LLM proxy (v0.29.0 and earlier) trusts the client-supplied x-headroom-user-id header as an authenticated identity without binding it to the caller. The header is read directly in headroom/proxy/handlers/openai.py across chat completion and websocket paths, allowing any client to imperson...

NPM: n8n: Cross-Issuer Token Exchange Account Binding via Subject-Only Identity Resolution

NPM: n8n: Cross-Issuer Token Exchange Account Binding via Subject-Only Identity Resolution vulnerability discovered by ? in WordPress Npm n8n versions 2.27.4...

n8n: Cross-Issuer Token Exchange Account Binding via Subject-Only Identity Resolution

Impact When an n8n instance is configured with more than one trusted token-exchange issuer, external identities are resolved to local accounts using only the JWT sub claim, ignoring the issuer iss. As a result, two different issuers that emit the same subject value map to the same local account. ...

User Impersonation

Overview n8n is a n8n Workflow Automation Tool Affected versions of this package are vulnerable to User Impersonation via the token-exchange identity-resolution service in packages/cli/src/modules/token-exchange/services/identity-resolution.service.ts. An attacker can authenticate as another user...

CVE-2026-59208 n8n: Cross-Issuer Token Exchange Account Binding via Subject-Only Identity Resolution

n8n is an open source workflow automation platform. Prior to 2.27.4 and from 2.28.0 prior to 2.28.1, n8n instances configured with more than one trusted token-exchange issuer resolved external identities to local accounts using only the JWT sub claim and ignored the iss claim, allowing an attacke...

CVE-2026-59208

CVE-2026-59208 affects n8n, an open-source workflow automation platform. Vulnerability: when an n8n instance is configured with more than one trusted token-exchange issuer, it could resolve external identities to local accounts using only the JWT sub claim and ignore the iss claim. This allows an...

CVE-2026-59208 n8n: Cross-Issuer Token Exchange Account Binding via Subject-Only Identity Resolution

n8n is an open source workflow automation platform. Prior to 2.27.4 and from 2.28.0 prior to 2.28.1, n8n instances configured with more than one trusted token-exchange issuer resolved external identities to local accounts using only the JWT sub claim and ignored the iss claim, allowing an attacke...

CVE-2026-54778

CoreWCF is a port of the service side of Windows Communication Foundation WCF to .NET Core. Prior to 1.8.1 and 1.9.1, CoreWCF UnixDomainSocket POSIX peer identity resolution uses non-reentrant getpwuid and getgrgid calls, allowing concurrent connections to attribute one connection's identity to...

CVE-2026-54778

CVE-2026-54778 : CoreWCF UnixDomainSocket suffers a race in POSIX peer identity resolution due to non-reentrant getpwuid/getgrgid calls, allowing identity misattribution or host process crash under contention. Affected versions are prior to 1.8.1 and 1.9.1; fixed in 1.8.1 and 1.9.1. Impact is lim...

CVE-2026-54778

CoreWCF is a port of the service side of Windows Communication Foundation WCF to .NET Core. Prior to 1.8.1 and 1.9.1, CoreWCF UnixDomainSocket POSIX peer identity resolution uses non-reentrant getpwuid and getgrgid calls, allowing concurrent connections to attribute one connection's identity to...

EUVD-2026-42465

CoreWCF is a port of the service side of Windows Communication Foundation WCF to .NET Core. Prior to 1.8.1 and 1.9.1, CoreWCF UnixDomainSocket POSIX peer identity resolution uses non-reentrant getpwuid and getgrgid calls, allowing concurrent connections to attribute one connection's identity to...

CVE-2026-54778 CoreWCF: UnixDomainSocket Non-Reentrant POSIX Identity Resolution

CoreWCF is a port of the service side of Windows Communication Foundation WCF to .NET Core. Prior to 1.8.1 and 1.9.1, CoreWCF UnixDomainSocket POSIX peer identity resolution uses non-reentrant getpwuid and getgrgid calls, allowing concurrent connections to attribute one connection's identity to...