CVE-2026-77937

Letta versions through 0.16.8 are vulnerable to an authentication bypass flaw. The issue allows API callers to perform cross-tenant impersonation by providing a self-asserted user_id HTTP header. This vulnerability persists even when LETTA_SERVER_SECURE is enabled. Successful exploitation allows ...

CVE-2026-77937 Letta through 0.16.8 Cross-Tenant Impersonation via user_id Header

Letta through 0.16.8 contains an authentication bypass vulnerability that allows API callers to impersonate other users by supplying a self-asserted userid HTTP header. Attackers can set userid to another tenant's ID, even with LETTASERVERSECURE enabled, to read and modify that user's agents,...

CVE-2026-77937 Letta through 0.16.8 Cross-Tenant Impersonation via user_id Header

Letta through 0.16.8 contains an authentication bypass vulnerability that allows API callers to impersonate other users by supplying a self-asserted userid HTTP header. Attackers can set userid to another tenant's ID, even with LETTASERVERSECURE enabled, to read and modify that user's agents,...

CVE-2025-68624

N-able Mail Assure through April 2026 contains a design-level authorization flaw that allows an authenticated SMTP user to send outbound email using MAIL FROM addresses belonging to other tenants. When connecting to the SMTP TCP port and performing SMTP AUTH with valid credentials, the server...

CVE-2025-68624

N-able Mail Assure through April 2026 contains a design-level authorization flaw that allows an authenticated SMTP user to send outbound email using MAIL FROM addresses belonging to other tenants. When connecting to the SMTP TCP port and performing SMTP AUTH with valid credentials, the server...

CVE-2025-68624

N-able Mail Assure through April 2026 contains a design-level authorization flaw that allows an authenticated SMTP user to send outbound email using MAIL FROM addresses belonging to other tenants. When connecting to the SMTP TCP port and performing SMTP AUTH with valid credentials, the server...

PT-2026-90993

N-able Mail Assure through April 2026 contains a design-level authorization flaw that allows an authenticated SMTP user to send outbound email using MAIL FROM addresses belonging to other tenants. When connecting to the SMTP TCP port and performing SMTP AUTH with valid credentials, the server...

EUVD-2025-210903

N-able Mail Assure through April 2026 contains a design-level authorization flaw that allows an authenticated SMTP user to send outbound email using MAIL FROM addresses belonging to other tenants. When connecting to the SMTP TCP port and performing SMTP AUTH with valid credentials, the server...

CVE-2025-68624

N-able Mail Assure (formerly SolarWinds MSP Mail Assure), a cloud-based multi-tenant SMTP relay, contains a design-level authorization flaw (CWE-290) where an authenticated SMTP user can send outbound mail using MAIL FROM addresses of other tenants . After valid SMTP AUTH, the server accepts arbi...

PT-2026-70110

A missing authentication vulnerability in Chaskiq through commit 46dfdd1 allows unauthenticated remote attackers to mint Stripe Billing Portal sessions for any tenant via the stripeCustomerPortal GraphQL mutation. The mutation performs no authentication or authorization checks before creating a...

CVE-2026-17192

A VCO feature does not sufficiently validate caller-supplied input, allowing requests to be made on behalf of authenticated tenant accounts to internal services that are not otherwise accessible. This vulnerability requires a minimum role of Enterprise Standard Admin. This issue was discovered...

Woodpecker gRPC agent_id metadata can be spoofed- cross-tenant agent impersonation

Impact A vulnerability in Woodpecker CI's gRPC layer allowed any authenticated agent to impersonate any other agent on the same server by injecting a forged agentid value into outgoing gRPC metadata. The server correctly verified the JWT token but then discarded the verified agent identity in fav...

PT-2026-55127

Summary Centrifugo's dynamic JWKS endpoint feature can verify a JWT for one allowed issuer using a public key cached from another allowed issuer. The JWKS cache and singleflight lookup are keyed only by the JWT header kid, not by the resolved JWKS endpoint, issuer, audience, or other trust-domain...

CVE-2026-33585

Improper management of the idle timeout parameter in the Keycloak interface of the Arqit SKA-Platform enables an attacker to impersonate an authenticated tenant user via an unexpired browser session. This issue affects Symmetric Key Agreement Platform: before 26.03...

EUVD-2026-30115

Improper management of the idle timeout parameter in the Keycloak interface of the Arqit SKA-Platform enables an attacker to impersonate an authenticated tenant user via an unexpired browser session. This issue affects Symmetric Key Agreement Platform: before 26.03...

CVE-2026-33585

Improper management of the idle timeout parameter in the Keycloak interface of the Arqit SKA-Platform enables an attacker to impersonate an authenticated tenant user via an unexpired browser session. This issue affects Symmetric Key Agreement Platform: before 26.03...

CVE-2026-33585 Arqit SKA-Platform Improper Handling of Parameters Vulnerability

Improper management of the idle timeout parameter in the Keycloak interface of the Arqit SKA-Platform enables an attacker to impersonate an authenticated tenant user via an unexpired browser session. This issue affects Symmetric Key Agreement Platform: before 26.03...

CVE-2026-33585 Arqit SKA-Platform Improper Handling of Parameters Vulnerability

Improper management of the idle timeout parameter in the Keycloak interface of the Arqit SKA-Platform enables an attacker to impersonate an authenticated tenant user via an unexpired browser session. This issue affects Symmetric Key Agreement Platform: before 26.03...

Arqit Symmetric Key Agreement Platform security vulnerability

The Arqit Symmetric Key Agreement Platform is a quantum-safe key negotiation platform developed by Arqit Corporation. Versions prior to 26.03 of the Arqit Symmetric Key Agreement Platform contained security vulnerabilities. These vulnerabilities stemmed from improper management of the idle timeou...

CVE-2026-29200

A critical IDOR vulnerability has been discovered in Comet Backup affecting all versions from 20.11.0 to 26.1.1 and 26.2.1. The vulnerability allows a tenant administrator to impersonate any end-user account of other tenants on the same server via a vulnerable API call...