CVE-2026-11800

A flaw was found in Keycloak. This JWT algorithm confusion vulnerability in the JWT Authorization Grant flow allows an attacker with valid client credentials to bypass signature verification. By forging an assertion, the attacker can create unauthorized access tokens. This enables the attacker to...

Lemur has an authorization bypass in StrictRolePermission / AuthorityCreatorPermission

Summary StrictRolePermission and AuthorityCreatorPermission in lemur/auth/permissions.py call flaskprincipal.Permission.init with zero Needs when their config flags are unset. Both flags defaulted to False in code prior to the fix, so this was the state of any Lemur install that hadn't explicitly...

GHSA-QCQW-JWXC-2HQG Lemur has an authorization bypass in StrictRolePermission / AuthorityCreatorPermission

Summary StrictRolePermission and AuthorityCreatorPermission in lemur/auth/permissions.py call flaskprincipal.Permission.init with zero Needs when their config flags are unset. Both flags defaulted to False in code prior to the fix, so this was the state of any Lemur install that hadn't explicitly...

keycloak-policy-enforcer: Keycloak Policy Enforcer: Authorization bypass via incorrect URI comparison

A flaw was found in Keycloak Policy Enforcer. This vulnerability allows any authenticated user to bypass all authorization policies, including role, scope, and User-Managed Access UMA permission checks. By including the configured access-denied page path within a request URL, either as a path...

org.keycloak:keycloak-services: Keycloak: Authentication bypass via JWT algorithm confusion

A flaw was found in Keycloak. This JWT algorithm confusion vulnerability in the JWT Authorization Grant flow allows an attacker with valid client credentials to bypass signature verification. By forging an assertion, the attacker can create unauthorized access tokens. This enables the attacker to...

Improper Authorization

Overview Affected versions of this package are vulnerable to Improper Authorization through the web archive download endpoint. An attacker can access resources beyond their authorized token scope by sending crafted requests to this endpoint. Remediation Upgrade...

GO-2026-5328 Ech0: Missing authorization on dashboard log endpoints allows low-privilege users to access sensitive system logs in github.com/lin-snow/ech0

Ech0: Missing authorization on dashboard log endpoints allows low-privilege users to access sensitive system logs in github.com/lin-snow/ech0. NOTE: The source advisory for this report contains additional versions that could not be automatically mapped to standard Go module versions. If this is...

GO-2026-5393 Mattermost has an Incorrect Authorization issue in github.com/mattermost/mattermost-server

Mattermost has an Incorrect Authorization issue in github.com/mattermost/mattermost-server...

GO-2026-5349 free5GC NRF: type-confusion panic in POST /oauth2/token structured-form parser via Reflect.Set on incompatible types in github.com/free5gc/nrf

free5GC NRF: type-confusion panic in POST /oauth2/token structured-form parser via Reflect.Set on incompatible types in github.com/free5gc/nrf...

GO-2026-5314 OAuth2 Proxy has an Authorization Bypass in Email Domain Validation via Malformed Multi-@ Email Claims in github.com/oauth2-proxy/oauth2-proxy

OAuth2 Proxy has an Authorization Bypass in Email Domain Validation via Malformed Multi-@ Email Claims in github.com/oauth2-proxy/oauth2-proxy...

Improper Authorization

Overview Affected versions of this package are vulnerable to Improper Authorization through the web archive download endpoint. An attacker can access resources beyond their authorized token scope by sending crafted requests to this endpoint. Remediation Upgrade...

GO-2026-5341 OAuth2 Proxy's session cookies are not cleared when rendering sign-in page in github.com/oauth2-proxy/oauth2-proxy

OAuth2 Proxy's session cookies are not cleared when rendering sign-in page in github.com/oauth2-proxy/oauth2-proxy...

GO-2026-5333 Portainer missing authorization on custom template file endpoint, which exposes template content in github.com/portainer/portainer

Portainer missing authorization on custom template file endpoint, which exposes template content in github.com/portainer/portainer. 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...

GO-2026-5239 OpenFGA has cache-key delimiter injection in shared-iterator and v2 iterator that caches enables intra-store authorization-decision poisoning in github.com/openfga/openfga

OpenFGA has cache-key delimiter injection in shared-iterator and v2 iterator that caches enables intra-store authorization-decision poisoning in github.com/openfga/openfga...

GO-2026-5271 GitHub CLI has an incorrect authorization header in API requests to TUF repository mirrors via `gh attestation`, `gh release verify`, and `gh release verify-asset` commands in github.com/cli/cli

GitHub CLI has an incorrect authorization header in API requests to TUF repository mirrors via gh attestation, gh release verify, and gh release verify-asset commands in github.com/cli/cli...

GO-2026-5224 Kiota abstractions RedirectHandler leaks Cookie/Proxy-Authorization headers on cross-host redirect in github.com/microsoft/kiota-http-go

Kiota abstractions RedirectHandler leaks Cookie/Proxy-Authorization headers on cross-host redirect in github.com/microsoft/kiota-http-go...

GO-2026-5220 Arcane Backend: Missing admin authorization on git repository endpoints allows non-admin users to exfiltrate stored Git credentials and tamper with GitOps configs in github.com/getarcaneapp/arcane/backend

Arcane Backend: Missing admin authorization on git repository endpoints allows non-admin users to exfiltrate stored Git credentials and tamper with GitOps configs in github.com/getarcaneapp/arcane/backend...

GO-2026-5219 Grafana OSS: Authorization bypass allows users with Editor role to modify protected webhook URLs without permissions in github.com/grafana/grafana

Grafana OSS: Authorization bypass allows users with Editor role to modify protected webhook URLs without permissions in github.com/grafana/grafana. NOTE: The source advisory for this report contains additional versions that could not be automatically mapped to standard Go module versions. If this...

GO-2026-5183 DevGuard has improper authorization on public assets in github.com/l3montree-dev/devguard

DevGuard has improper authorization on public assets in github.com/l3montree-dev/devguard...

GO-2026-5180 Traefik has an StripPrefixRegex Middleware Authorization Bypass via Path/RawPath Desync in github.com/traefik/traefik

Traefik has an StripPrefixRegex Middleware Authorization Bypass via Path/RawPath Desync in github.com/traefik/traefik...