Allocation of Resources Without Limits or Throttling

Overview Affected versions of this package are vulnerable to Allocation of Resources Without Limits or Throttling via the GetEndpoints process. An attacker can cause the server to allocate excessive memory by sending a GetEndpointsRequest with an extremely large endpointUrl field, delivered in...

DEBIAN-CVE-2026-11946

An unauthenticated remote attacker can exhaust server memory via the GetEndpoints Discovery Service in open62541. The endpointUrl field of GetEndpointsRequest is not validated for length. An attacker can declare an arbitrarily large string up to 4.09 GB via the UInt32 length field delivered acros...

CVE-2026-11946

An unauthenticated remote attacker can exhaust server memory via the GetEndpoints Discovery Service in open62541. The endpointUrl field of GetEndpointsRequest is not validated for length. An attacker can declare an arbitrarily large string up to 4.09 GB via the UInt32 length field delivered acros...

CVE-2026-11946

An unauthenticated remote attacker can exhaust server memory via the GetEndpoints Discovery Service in open62541. The endpointUrl field of GetEndpointsRequest is not validated for length. An attacker can declare an arbitrarily large string up to 4.09 GB via the UInt32 length field delivered acros...

UBUNTU-CVE-2026-11946

An unauthenticated remote attacker can exhaust server memory via the GetEndpoints Discovery Service in open62541. The endpointUrl field of GetEndpointsRequest is not validated for length. An attacker can declare an arbitrarily large string up to 4.09 GB via the UInt32 length field delivered acros...

CVE-2026-11946

An unauthenticated remote attacker can exhaust server memory via the GetEndpoints Discovery Service in open62541. The endpointUrl field of GetEndpointsRequest is not validated for length. An attacker can declare an arbitrarily large string up to 4.09 GB via the UInt32 length field delivered acros...

CVE-2026-11946

CVE-2026-11946 affects open62541 (1.4.0–1.4.16, 1.5.0–1.5.4, master). An unauthenticated remote attacker can exhaust server memory through GetEndpoints by sending an oversized endpointUrl in GetEndpointsRequest; length is not validated, allowing ~4.09 GB strings split across chunks, buffered in R...

CVE-2026-33592

An unauthenticated remote attacker can exhaust server memory via the FindServers Discovery Service in open62541. The serverUris field of FindServersRequest is not validated for length or array size. An attacker can declare an arbitrarily large string up to 3.9 GB delivered across intermediate...

CVE-2026-33592

An unauthenticated remote attacker can exhaust server memory via the FindServers Discovery Service in open62541. The serverUris field of FindServersRequest is not validated for length or array size. An attacker can declare an arbitrarily large string up to 3.9 GB delivered across intermediate...

DEBIAN-CVE-2026-33592

An unauthenticated remote attacker can exhaust server memory via the FindServers Discovery Service in open62541. The serverUris field of FindServersRequest is not validated for length or array size. An attacker can declare an arbitrarily large string up to 3.9 GB delivered across intermediate...

CVE-2026-33592

An unauthenticated remote attacker can exhaust server memory via the FindServers Discovery Service in open62541. The serverUris field of FindServersRequest is not validated for length or array size. An attacker can declare an arbitrarily large string up to 3.9 GB delivered across intermediate...

UBUNTU-CVE-2026-33592

An unauthenticated remote attacker can exhaust server memory via the FindServers Discovery Service in open62541. The serverUris field of FindServersRequest is not validated for length or array size. An attacker can declare an arbitrarily large string up to 3.9 GB delivered across intermediate...

Allocation of Resources Without Limits or Throttling

Overview Affected versions of this package are vulnerable to Allocation of Resources Without Limits or Throttling via the FindServers process. An attacker can cause the server to allocate excessive memory by sending a FindServersRequest with an unbounded serverUris field, delivering a very large...

EUVD-2026-41256

An unauthenticated remote attacker can exhaust server memory via the FindServers Discovery Service in open62541. The serverUris field of FindServersRequest is not validated for length or array size. An attacker can declare an arbitrarily large string up to 3.9 GB delivered across intermediate...

CVE-2026-33592

An unauthenticated remote attacker can exhaust server memory via the FindServers Discovery Service in open62541. The serverUris field of FindServersRequest is not validated for length or array size. An attacker can declare an arbitrarily large string up to 3.9 GB delivered across intermediate...

CVE-2026-33592

The CVE-2026-33592 issue affects open62541 (versions 1.4.0–1.4.16, 1.5.0–1.5.4, and master). An unauthenticated remote attacker can exhaust server memory via the FindServers Discovery Service because the FindServersRequest serverUris field is not validated for length/array size. An adversary can ...

CVE-2026-33592

An unauthenticated remote attacker can exhaust server memory via the FindServers Discovery Service in open62541. The serverUris field of FindServersRequest is not validated for length or array size. An attacker can declare an arbitrarily large string up to 3.9 GB delivered across intermediate...

CVE-2026-1301 Out-of-bounds Write in o6 Automation GmbH Open62541

In builds with PubSub and JSON enabled, a crafted JSON message can cause the decoder to write beyond a heap-allocated array before authentication, reliably crashing the process and corrupting memory...

CVE-2026-1301 Out-of-bounds Write in o6 Automation GmbH Open62541

In builds with PubSub and JSON enabled, a crafted JSON message can cause the decoder to write beyond a heap-allocated array before authentication, reliably crashing the process and corrupting memory...

CVE-2026-1301

CVE-2026-1301 pertains to o6 Automation GmbH Open62541 (Open62541/Open62541-like builds) where in PubSub with JSON decoding enabled a crafted JSON message can cause a heap-allocated array write beyond bounds before authentication, leading to a process crash and memory corruption. Affected compone...