Deserialization of Untrusted Data Affecting open-webui package, versions <0.9.6-r1
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.
Do your applications use this vulnerable package?
In a few clicks we can analyze your entire application and see what components are vulnerable in your application, and suggest you quick fixes.
Test your applicationsSnyk Learn
Learn about Deserialization of Untrusted Data vulnerabilities in an interactive lesson.
Start learning- Snyk IDSNYK-CHAINGUARDLATEST-OPENWEBUI-17139902
- published4 Jun 2026
- disclosed27 May 2026
Introduced: 27 May 2026
NewCVE-2026-45134 (opens in a new tab)How to fix?
Upgrade Chainguard open-webui to version 0.9.6-r1 or higher.
NVD Description
Note: Versions mentioned in the description apply only to the upstream open-webui package and not the open-webui package as distributed by Chainguard.
See How to fix? for Chainguard relevant fixed versions and status.
LangSmith Client SDKs provide SDK's for interacting with the LangSmith platform. Prior to LangSmith SDK Python 0.8.0 and JS/TS 0.6.0, the LangSmith SDK's prompt pull methods (pull_prompt / pull_prompt_commit in Python, pullPrompt / pullPromptCommit in JS/TS) fetch and deserialize prompt manifests from the LangSmith Hub. These manifests may contain serialized LangChain objects and model configuration that affect runtime behavior. When pulling a public prompt by owner/name identifier, the manifest content is controlled by an external party, but prior versions of the SDK did not distinguish this from pulling a prompt within the caller's own organization. This vulnerability is fixed in LangSmith SDK Python 0.8.0 and JS/TS 0.6.0.