Medium severity · published May 29, 2026
CVE-2026-48811
FreeScout: Thread Deletion Bypasses Mailbox Access Revocation
4.3
CVSS
0.2%
EPSS
No
On KEV
Description
FreeScout is a free help desk and shared inbox built with PHP's Laravel framework. Prior to 1.8.221, FreeScout allows a non-admin user to permanently delete an internal note (private thread) from any conversation, even after that user's access to the mailbox containing the conversation has been revoked. The ThreadPolicy::delete authorization policy does not verify mailbox membership, so a former team member retains destructive write access to notes they created. This vulnerability is fixed in 1.8.221.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N
Attack vector
Network
Complexity
Low
Privileges
Low
User interaction
None
Confidentiality
None
Integrity
Low
Availability
None
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.2% · higher than 5% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
FR
freescout · freescout-help-desk
< 1.8.221 · source: vendor
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-48811
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-48811
github.com
https://github.com/freescout-help-desk/freescout/security/advisories/GHSA-9vx8-gx3p-9mh6
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