CVE-2025-48473Public exploitNetwork attack vector

Cross-mailbox message disclosure via unchecked thread access

Published May 29, 2025 · Updated May 29, 2025

Incorrect authorization in FreeScout before 1.8.179 allows remote authenticated users to read messages from inaccessible conversations. In ConversationsController::create, the from_thread_id lookup loads a thread and uses its conversation content without checking view permission on the source conversation. Any authenticated user who can create a conversation in one mailbox can supply another thread ID and read messages from other mailboxes or restricted conversations.

CVSS severity5.3
Medium
EPSS probability0.37%
Next 30 days · Sep 17, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Incorrect authorization in FreeScout before 1.8.179 allows remote authenticated users to read messages from inaccessible conversations. In ConversationsController::create, the from_thread_id lookup loads a thread and uses its conversation content without checking view permission on the source conversation. Any authenticated user who can create a conversation in one mailbox can supply another thread ID and read messages from other mailboxes or restricted conversations.

The record

CVE
CVE-2025-48473
Published
May 29, 2025
Updated
May 29, 2025
Vendor
FreeScout
Product
FreeScout
Classifications
CWE-863, T1190
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. May 29, 2025CVE publishedPublication date reported by the CVE source.
  2. May 29, 2025Record 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=< 1.8.179

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

FreeScout · FreeScoutversion=< 1.8.179

Published CVSS scores

4.3NIST NVDCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N
5.3GitHub, Inc.CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N

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-863Incorrect Authorization
T1190Exploit Public-Facing Application

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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