Reference page — cumulative record through Sunday, October 4, 2026 UTC. Reference pages update as the archive grows; only dated daily editions are immutable pages of record.
CVE-2026-82906
sdcb chats Signed File Download Endpoint FileController.cs DownloadPublic missing authentication
AV AC AT PR UI VC VI VA CVSS EPSS %ile KEV
N H N N N L N N 2.9 .0057 45.4 —
AFFECTED
Product Versions Fixed
chats 1.0 – —
TIMELINE
Aug 31 Reserved by VulDB
Aug 31 Published (CNA: VulDB)
Sep 1 EXPLOIT PUBLISHED — CVE-2026-82906 (sdcb chats). Public exploit reference added.
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.
Lifecycle
Complete event history — 3 events, chronological
| Date | Event | Detail |
| August 31, 2026 | Reserved | Reserved by VulDB |
| August 31, 2026 | Published | Published (CNA: VulDB) |
| September 1, 2026 | EXPLOIT PUBLISHED | EXPLOIT PUBLISHED — CVE-2026-82906 (sdcb chats). Public exploit reference added. |
Affected
Affected products and packages — 1 row
| Vendor | Product / Package | Ecosystem | Version introduced | Fixed |
| sdcb | chats | — | 1.0 | — |
About this page
This is a reference page, not a dated page of record. It assembles the complete lifecycle of CVE-2026-82906 from the CVE Program record, NVD enrichment, the CISA KEV catalog, EPSS, and OSV advisories. The box score's numbers (CVSS, EPSS, KEV status) are current as of Sunday, October 4, 2026 UTC and are re-derived as the archive grows; only dated daily editions are immutable pages of record. The authoritative source for this identifier is cve.org.