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CVE-2026-4994— wandb OpenUI APIStatusError server.py generic_exception_handler information exposure

Quick assessment

Affected
wandb OpenUI
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

OpenUI是Weights & Biases开源的一个 UI 程序。 OpenUI 1.0及之前版本存在安全漏洞，该漏洞源于对参数key的错误操作，可能导致通过错误消息泄露信息。

CVSS 3.5 · Low EPSS 0.31% · P23

Possible ATT&CK Techniques 1 AI

T1530 · Data from Cloud Storage
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I. Basic Information for CVE-2026-4994

Vulnerability Information
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Vulnerability Title
wandb OpenUI APIStatusError server.py generic_exception_handler information exposure
Source: CVE Program / CVE List V5
Vulnerability Description
A vulnerability was found in wandb OpenUI up to 1.0/3.5-turb. Affected is the function generic_exception_handler of the file backend/openui/server.py of the component APIStatusError Handler. The manipulation of the argument key results in information exposure through error message. Access to the local network is required for this attack. The exploit has been made public and could be used. The vendor was contacted early about this disclosure but did not respond in any way.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
通过错误消息导致的信息暴露
Source: CVE Program / CVE List V5
Vulnerability Title
OpenUI 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
OpenUI是Weights & Biases开源的一个 UI 程序。 OpenUI 1.0及之前版本存在安全漏洞，该漏洞源于对参数key的错误操作，可能导致通过错误消息泄露信息。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
wandb OpenUI 1.0 -

II. Public POCs for CVE-2026-4994

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III. Intelligence Information for CVE-2026-4994

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Vendor Advisories for CVE-2026-4994 (2)

News Coverage for CVE-2026-4994 (1)

Same Patch Batch · wandb · 2026-03-28 · 3 CVEs total

CVE-2026-4995 3.5 LOW wandb OpenUI Window Message Event index.html cross site scripting
CVE-2026-4993 3.3 LOW wandb OpenUI config.py hard-coded credentials

IV. Related Vulnerabilities

Same product: OpenUI
Same vendor: wandb
Same weakness: CWE-209