What is CVE-2026-66750?

CVE-2026-66750 is a medium-severity vulnerability in Sdelements Lets-chat, classified under Missing Authorization. CVSS score: 4.3/10. Published 2026-07-28.

How severe is CVE-2026-66750?

Medium severity. CVSS v3 base score is 4.3 out of 10.

Auth bypass in Sdelements Lets-chat

CVE-2026-66750

Let's Chat 0.3.0 through 0.4.8 contains a broken access control vulnerability that allows authenticated attackers to download file attachments from private and password-protected rooms they are not a member of by exploiting missing room me…

Vulnerability class: Broken Access Control

CVSS v3 metric

CVSS v3 base score 4.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N.

Affected products

Sdelements Lets-chat — versions 0.3.0, 55e8833974c83559ed2cbc12bc15febeb2466254

Weakness classification (CWE)

CWE-862 — Missing Authorization

References

disclosure@vulncheck.com (technical-description, exploit)
disclosure@vulncheck.com (third-party-advisory)

Frequently asked questions

What is CVE-2026-66750?: CVE-2026-66750 is a medium-severity vulnerability in Sdelements Lets-chat, classified under Missing Authorization. CVSS score: 4.3/10. Published 2026-07-28.
How severe is CVE-2026-66750?: Medium severity. CVSS v3 base score is 4.3 out of 10.