SimpleHelp Authentication Bypass Vulnerability

SimpleHelp contains an authentication bypass vulnerability in the OIDC authentication flow. When OIDC authentication is configured, identity tokens submitted during login are accepted without verifying their cryptographic signature. In a vulnerable configuration, a remote, unauthenticated attacke...

PT-2026-53431

Impact When Flask-AppBuilder is set to AUTH TYPE AUTH OID, allows an attacker to forge an HTTP request, that could deceive the backend into using any requested OpenID service. This vulnerability could grant an attacker unauthorised privilege access if a custom OpenID service is deployed by the...

VulnCheck KEV: CVE-2026-48558

SimpleHelp contains an authentication bypass vulnerability in the OIDC authentication flow. When OIDC authentication is configured, identity tokens submitted during login are accepted without verifying their cryptographic signature. In a vulnerable configuration, a remote, unauthenticated attacke...

GO-2026-5557 Note Mark: OIDC-registered users authenticated by submitting password "null" in github.com/enchant97/note-mark/backend

Note Mark: OIDC-registered users authenticated by submitting password "null" in github.com/enchant97/note-mark/backend...

GO-2026-5423 OpenFGA: OIDC audience validation skipped when --authn-oidc-audience is unset in github.com/openfga/openfga

OpenFGA: OIDC audience validation skipped when --authn-oidc-audience is unset in github.com/openfga/openfga...

GO-2026-5364 Oxia has an OIDC token audience validation bypass via SkipClientIDCheck in github.com/oxia-db/oxia

Oxia has an OIDC token audience validation bypass via SkipClientIDCheck in github.com/oxia-db/oxia...

GO-2026-5258 Vikunja has TOTP Two-Factor Authentication Bypass via OIDC Login Path in code.vikunja.io/api

Vikunja has TOTP Two-Factor Authentication Bypass via OIDC Login Path in code.vikunja.io/api. NOTE: The source advisory for this report contains additional versions that could not be automatically mapped to standard Go module versions. If this is causing false-positive reports from vulnerability...

GO-2026-5273 MCP Registry's GitHub OIDC tokens are replayable across registry deployments due to shared audience in github.com/modelcontextprotocol/registry

MCP Registry's GitHub OIDC tokens are replayable across registry deployments due to shared audience in github.com/modelcontextprotocol/registry...

org.keycloak.protocol.oidc.grants: org.keycloak.services.managers: Keycloak: Server-Side Request Forgery via OIDC token endpoint manipulation

A flaw was found in Keycloak. An authenticated attacker can perform Server-Side Request Forgery SSRF by manipulating the clientsessionhost parameter during refresh token requests. This occurs when a Keycloak client is configured to use the backchannel.logout.url with the application.session.host...

org.keycloak/keycloak-services: keycloak: org.keycloak.protocol.oidc: Security flaw in org.keycloak/keycloak-services

A flaw was found in Keycloak. When both realm-level and client-level notBefore revocation policies are configured, Keycloak's OpenID Connect OIDC Introspection feature fails to properly honor the realm-level policy. This allows tokens that should have been revoked to remain active, potentially...

keycloak-rhel9: Organization Data Leak After Feature Disabled in Keycloak

A flaw was found in Keycloak. An authenticated user with existing organization membership can exploit this flaw by accessing user-facing APIs, such as the account API or by requesting an OpenID Connect OIDC token with the 'organization' scope. This allows organization metadata to be disclosed in...

PT-2026-52646

Name of the Vulnerable Software and Affected Versions Nextflow versions 25.09.2-edge through 26.04.1 Description The nextflow auth login command persists Seqera Platform OIDC tokens to the $NXF HOME:-/.nextflow/seqera-auth.config file. Because the file is created via Java NIO without specifying...

OpenBao encryption JWT/OIDC XSS

The vulnerability of the JWT/OIDC authentication method of the OpenBao encryption system is related to the lack of mechanisms for encoding or shielding the output data. Exploiting this vulnerability allows a malicious actor to perform XSS attacks remotely...

OpenBao JWT/OIDC Session Interception

The vulnerability of the JWT/OIDC authentication method of the OpenBao encryption system is related to improper session management. Exploiting this vulnerability could allow a malicious actor to intercept a user’s session...

CVE-2026-54588

A flaw was found in Poweradmin, a web-based DNS administration tool. An unauthenticated attacker can exploit this vulnerability by manipulating the HTTPHOST request header. This manipulation allows the attacker to poison the redirecturi used in the OpenID Connect OIDC, Security Assertion Markup...

Open Redirect

Overview Affected versions of this package are vulnerable to Open Redirect via the construction of callback URLs in OIDC, SAML, and logout authentication flows using the attacker-controlled HTTPHOST header. An attacker can intercept authorization codes or session tokens by manipulating the...

CVE-2026-54588

Poweradmin (for PowerDNS) is affected by a Host Header Injection vulnerability in auth flows. Versions prior to 4.2.4 and 4.3.3 use the HTTP_HOST header as the authoritative source for building OIDC redirect_uri, SAML ACS/SLO URLs, and logout redirects without validation. An unauthenticated attac...

CVE-2026-54588

Poweradmin is a web-based DNS administration tool for PowerDNS server. Versions prior to 4.2.4 and 4.3.3 use the attacker-controlled HTTPHOST request header as the authoritative source for building callback URLs in its OIDC, SAML, and logout authentication flows without any validation. An...

CVE-2026-54588 Poweradmin has Host Header Injection in OIDC redirect_uri, SAML ACS/SLO URL, and Logout Redirect Construction.

Poweradmin is a web-based DNS administration tool for PowerDNS server. Versions prior to 4.2.4 and 4.3.3 use the attacker-controlled HTTPHOST request header as the authoritative source for building callback URLs in its OIDC, SAML, and logout authentication flows without any validation. An...

CVE-2026-54320

CVE-2026-54320 refers to Daytona’s cross-tenant takeover vulnerability prior to version 0.184.0. The issue allowed an unverified email that matched an invitation’s target to accept it (or decline) and join the target organization, since invitation acceptance/declination did not require email veri...