Vulnerability · Published May 29, 2026 · Assigned by GitHub_M

CVE-2026-48811FreeScout: Thread Deletion Bypasses Mailbox Access Revocation

Medium 4.3

In plain English

A medium-severity missing authorization in freescout from freescout-help-desk. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.2% (higher than 5% of all known vulnerabilities).

Severity (CVSS 3.1)4.3Medium

Exploit odds (30 days)0.2%top 95.3% of all CVEs

Exploited in the wildNo reportsCISA SSVC: poc

Attack toolingNoneno public tooling known

Official 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(private thread) from any conversation, even after that user's access to the mailbox containing the conversation has been revoked.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.

Affected products (as reported)

Vendor	Product	Versions
freescout-help-desk	freescout	< 1.8.221

Weakness: CWE-862 · Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N

References

https://github.com/freescout-help-desk/freescout/security/advisories/GHSA-9vx8-gx3p-9mh6 x_refsource_CONFIRM