Vulnerability · Published Jul 28, 2026 · Assigned by VulnCheck

CVE-2026-66751Let's Chat 0.3.0 - 0.4.8 Improper Authorization via DELETE /rooms/:room

Medium 5.4

In plain English

A medium-severity missing authorization in lets-chat from sdelements. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.3% (higher than 23% of all known vulnerabilities). Ready-made attack tooling exists: public proof-of-concept code.

Severity (CVSS 3.1)5.4Medium

Exploit odds (30 days)0.3%top 77.3% of all CVEs

Exploited in the wildNo reportsCISA SSVC: poc

Attack tooling1Public PoC

Official description

Let's Chat 0.3.0 through 0.4.8 contains an improper authorization vulnerability that allows any authenticated user to archive any room on the server by sending a DELETE request to the rooms handler without ownership verification. Attackers can enumerate room IDs via the rooms listing endpoint and permanently archive private or password-protected rooms they cannot access, with no application-level recovery path requiring direct database intervention to restore.

Affected products (as reported)

Vendor	Product	Versions
sdelements	lets-chat	0.3.0 – through 0.4.85b5f46f92696955c27864dbca8b33b5b6a39a502 – through 617207ff3c0c0bf8e3c7a915bd9ec03f1dd8390c

Weakness: CWE-862 · Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:L

References

Researcher Disclosure technical-description, exploit
https://www.vulncheck.com/advisories/let-s-chat-improper-authorization-via-delete-rooms-room third-party-advisory