What’s Vulnerable › Vulnerabilities

CVE-2026-82906: sdcb chats Signed File Download Endpoint FileController.cs DownloadPublic missing authentication

• Severity: low (CVSS 3.7 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.6% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-08-31 · updated 2026-09-01
• Weakness: CWE-287

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 products

• sdcb chats: 1.0, 1.1, 1.2, 1.3, 1.4, 1.5 (+7)

References

• https://github.com/yaowenxiao721/Poc/blob/main/sdcb-chats/chats-poc-2.md
• https://vuldb.com/cve/CVE-2026-82906
• https://vuldb.com/submit/877767
• https://vuldb.com/vuln/397286
• https://vuldb.com/vuln/397286/cti

Get alerted when CVE-2026-82906 or the next vulnerability affects your stack