Allocation of Resources Without Limits or Throttling Affecting open62541 package, versions [1.4.6,]
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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- published2 Jul 2026
- disclosed2 Jul 2026
- creditLorenzo Cannella
Introduced: 2 Jul 2026
CVE-2026-11946 (opens in a new tab)How to fix?
A fix was pushed into the master branch but not yet published.
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 intermediate chunks without completing the transmission. The server buffers all received chunks in RAM indefinitely until the SecureChannel times out, potentially leading to resource exhaustion and denial of service. This is only exploitable if the attacker is unauthenticated and able to initiate a pre-session connection.