CVE-2026-48811Public exploitNetwork attack vector

Authenticated note deletion via omitted mailbox check

Published May 29, 2026 · Updated May 29, 2026

Missing authorization in FreeScout before 1.8.221 allows remote authenticated users to permanently delete internal notes they created. ThreadPolicy::delete authorizes deletion solely by created_by_user_id and omits the current mailbox-membership check used by ConversationPolicy::delete. Exploitation requires a valid agent session, a CSRF token, and the identifier of a note created before access revocation; customer messages and agent replies remain unaffected.

CVSS severity4.3
Medium
EPSS probability0.15%
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 1.8.221 allows remote authenticated users to permanently delete internal notes they created. ThreadPolicy::delete authorizes deletion solely by created_by_user_id and omits the current mailbox-membership check used by ConversationPolicy::delete. Exploitation requires a valid agent session, a CSRF token, and the identifier of a note created before access revocation; customer messages and agent replies remain unaffected.

The record

CVE
CVE-2026-48811
Published
May 29, 2026
Updated
May 29, 2026
Vendor
FreeScout
Product
FreeScout
Classifications
CWE-862, T1565.001
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. May 29, 2026CVE publishedPublication date reported by the CVE source.
  2. May 29, 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=< 1.8.221

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

FreeScout · FreeScoutversion=< 1.8.221

Published CVSS scores

4.3GitHub, Inc.CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A: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-862Missing Authorization
T1565.001Stored Data Manipulation

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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