CVE-2026-82906

sdcb chats Signed File Download Endpoint FileController.cs DownloadPublic missing authentication

LOW
3.7
CVSS Score
Published: August 31, 2026 at 08:00 PM UTC
Updated: September 1, 2026 at 09:01 PM UTC
1 product affected across 1 vendorChats

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Severity
LOW3.7
Exploit prediction
EPSS 0.6%
SSVC
PoC

Description

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.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Remediation

No guide yet

No remediation guidance has been written for this CVE yet, and no fixed version or vendor advisory is recorded against it.

References (5)

VDB EntryTechnical Description
Source: cverecord
https://vuldb.com/vuln/397286
SignaturePermissions Required
Source: cverecord
https://vuldb.com/vuln/397286/cti
Third Party Advisory
Source: cverecord
https://vuldb.com/cve/CVE-2026-82906
Third Party Advisory
Source: cverecord
https://vuldb.com/submit/877767

SSVC — Action Prioritization

SSVCPoCNot automatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

3.7LOWVulDB
Vector?

Quick Info

StatusDEFERRED
CWE
CWE-306CWE-287

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