CVE-2026-40570Public exploitNetwork attack vector

Authenticated customer PII disclosure via unchecked mailbox access

Published Apr 21, 2026 · Updated Apr 21, 2026

Missing authorization in FreeScout before 1.8.213 allows remote authenticated users to read complete customer profiles via a crafted AJAX request. The load_customer_info branch in ConversationsController.php looks up a customer by the supplied email address but renders the customer sidebar even when the mailbox does not exist or the user lacks access. Any authenticated agent with a valid customer email address can expose names, addresses, phone numbers, social profiles, and internal notes across mailboxes.

CVSS severityUnavailable
Unscored
EPSS probability0.25%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Missing authorization in FreeScout before 1.8.213 allows remote authenticated users to read complete customer profiles via a crafted AJAX request. The load_customer_info branch in ConversationsController.php looks up a customer by the supplied email address but renders the customer sidebar even when the mailbox does not exist or the user lacks access. Any authenticated agent with a valid customer email address can expose names, addresses, phone numbers, social profiles, and internal notes across mailboxes.

The record

CVE
CVE-2026-40570
Published
Apr 21, 2026
Updated
Apr 21, 2026
Vendor
FreeScout
Product
FreeScout
Classifications
CWE-639, CWE-862, T1213
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Apr 21, 2026CVE publishedPublication date reported by the CVE source.
  2. Apr 21, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=< 1.8.213

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

FreeScout · FreeScoutversion=< 1.8.213

Published CVSS scores

5.7GitHubCVSS: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

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-639Authorization Bypass Through User-Controlled Key
CWE-862Missing Authorization
T1213Data from Information Repositories

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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