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VulnerabilityPublished

CVE-2026-40570: freescout · Insecure Direct Object Reference

Affects freescoutSource CVE Database V5

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Public exploit available · CVSS 5.7 Medium : upgrade to 1.8.213 as a priority.

Data as of 29 Oct 2026, 19:04 UTC

CVSS 4.0 base score
5.7Medium
How severe the flaw is on the 0–10 CVSS scale.
EPSS
0.2% chance of exploitation in 30 days – higher than 16% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
Patch
Available – fixed in 1.8.213
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:P

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 21 Apr 2026

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponized: evidence found.

    CVSS exploit maturity: proof of concept public

  4. Exploited in the wild: no evidence on record.

    Not in CISA KEV and no source reports exploitation

  5. Observed by OffSeq Mirage: no evidence on record.

    No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), CVSS vector, the Metasploit, Exploit-DB and nuclei-templates index as of 29 Oct 2026.

What to do

Upgrade freescout and freescout-help-desk/freescout to 1.8.213.

Affected software

ProductAffectedFixed in
freescout-help-deskfreescoutAffected
  • <1.8.213
Fixed in
  • 1.8.213
GitHubfreescout-help-desk/freescoutpkg:github/freescout-help-desk/freescoutOther threatsAffected
  • <1.8.213
Fixed in
  • 1.8.213

Check your own hosts for these packages with threat-finder (opens in a new tab), our free open-source scanner.

AI-suggested

Upgrade FreeScout to version 1.8.213 or later, where this authorization bypass vulnerability is fixed. Since the vendor advisory indicates the issue is resolved in this version, applying this official fix is the recommended remediation. No other mitigation or temporary workaround is documented.

Description

FreeScout is a free self-hosted help desk and shared mailbox. Prior to version 1.8.213, the `load_customer_info` action in `POST /conversation/ajax` returns complete customer profile data to any authenticated user without verifying mailbox access. An attacker only needs a valid email address to retrieve all customer PII. Version 1.8.213 fixes the issue.

References

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