CVE-2026-66750: lets-chat 0.3.0 through 0.4.8

CVE-2026-66750. CVSS 3.1 base score 4.3 (MEDIUM, Vendor/CNA). EPSS 0.00346 (percentile 0.26896), scored 22-Oct-2026.

Affected technology

lets-chat · 0.3.0 through 0.4.8, 55e8833974c83559ed2cbc12bc15febeb2466254 through 617207ff3c0c0bf8e3c7a915bd9ec03f1dd8390c
sdelements

Description’s affected range: through 0.4.8

Component: Not specified by the source

Attack conditions (Vendor/CNA, CVSS 4.0): Network (remote) · Low privileges required · No user interaction required

What an attacker can do

Authenticated attackers can download file attachments from private and password-protected rooms they are not a member of by exploiting missing room membership checks in the file retrieval route. Vendor/CNA’s CVSS 4.0 assessment (base score 5.3/10) rates confidentiality impact as low; integrity and availability impact as none.

Published 24-Oct-2026 15:09 UTC

CWE: CWE-862
CCR priority: 17.3 /100 (P5)
CVSS 3.1: 4.3 /10 · CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N · Vendor/CNA
EPSS: 0.00346 · percentile 0.26964 · 2026-10-24
KEV: no

Provenance

FIRST EPSS daily exploit-probability · Source record · observed 2026-10-24 15:09:16.138216+00:00 UTC
NVD CVE API 2.0 · Source record · observed 2026-10-24 15:07:27.951960+00:00 UTC

Stable permalink: https://cybercodered.org/item/cve-cve-2026-66750.html