CVE-2026-82906

LowCVSS 3.7

Published: 31/08/2026(UTC)Updated: 01/09/2026(UTC)Translated: 01/09/2026(UTC)NVD NIST

Exploitation Probability (EPSS)

Low risk

0.37%

30th percentile - higher than 30% of all known CVEs

Summary

A flaw has been found in sdcb chats up to version 1.12.0. It affects the DownloadPublic function in FileController.cs (Signed File Download Endpoint). Missing authentication allows remote exploitation, but the attack complexity is high and exploitability is difficult. The exploit has been published.

Risk Assessment

Despite the high attack complexity, missing authentication may allow unauthorized users to download files, potentially leading to data leakage.

Recommendation

It is recommended to update sdcb chats to a patched version and to implement authentication for file download endpoints.

Other vulnerabilities in sdcb chats

CVE-2026-82905Medium
A vulnerability was detected in sdcb chats up to version 1.12.0. It affects the McpController function in the file src/BE/web/Controllers/Users/Mcps/McpController.cs of the fetch-tools Endpoint component. The manipulation results in server-side request forgery. The attack can be launched remotely, and the exploit is public.

Original NVD description (English source)

A flaw has been found in sdcb chats up to 1.12.0. This impacts the function DownloadPublic of the file src/BE/web/Controllers/Chats/Files/FileController.cs of the component Signed File Download Endpoint. This manipulation causes missing authentication. Remote exploitation of the attack is possible. The attack's complexity is rated as high. The exploitability is said to be difficult. The exploit has been published and may be used. The vendor was contacted early about this disclosure but did not respond in any way.

Vulnerability data from NVD (NIST) · CISA KEV · EPSS