CVE-2026-82906
6.3
CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:P
Summary
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 Software
| Vendor | Product | Version Range | Status |
|---|---|---|---|
| sdcb | chats | 1.0 | affected |
| sdcb | chats | 1.1 | affected |
| sdcb | chats | 1.2 | affected |
| sdcb | chats | 1.3 | affected |
| sdcb | chats | 1.4 | affected |
| sdcb | chats | 1.5 | affected |
| sdcb | chats | 1.6 | affected |
| sdcb | chats | 1.7 | affected |
| sdcb | chats | 1.8 | affected |
| sdcb | chats | 1.9 | affected |
| sdcb | chats | 1.10 | affected |
| sdcb | chats | 1.11 | affected |
| sdcb | chats | 1.12.0 | affected |
Weaknesses
- CWE-306: Missing Authentication
- CWE-287: Improper Authentication
References
- https://vuldb.com/vuln/397286
- https://vuldb.com/vuln/397286/cti
- https://vuldb.com/cve/CVE-2026-82906
- https://vuldb.com/submit/877767
- https://github.com/yaowenxiao721/Poc/blob/main/sdcb-chats/chats-poc-2.md
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