How severe is CVE-2026-48811?

CVE-2026-48811 has a CVSS 3.x base score of 4.3, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is none, integrity low, and availability none.

Is CVE-2026-48811 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (5th percentile), an estimate of the probability of exploitation in the next 30 days.

How do I fix CVE-2026-48811?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

Does CVE-2026-48811 have an EU (EUVD) identifier?

Yes. CVE-2026-48811 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-33437.

When was CVE-2026-48811 published?

CVE-2026-48811 was published on 2026-05-29 and last updated on 2026-06-17.

CVE-2026-48811

CVE-2026-48811 is a medium-severity vulnerability with a CVSS 3.x base score of 4.3. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-862.

Key facts

Severity: Medium (CVSS 3.x base score 4.3)
EPSS exploit prediction: 0% (5th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-33437
Weakness: CWE-862
Published: 2026-05-29
Last modified: 2026-06-17

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(private thread) from any conversation, even after that user's access to the mailbox containing the conversation has been revoked.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

Frequently asked questions

What is CVE-2026-48811?: 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(private thread) from any conversation, even after that user's access to the mailbox containing the conversation has been revoked.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.
How severe is CVE-2026-48811?: CVE-2026-48811 has a CVSS 3.x base score of 4.3, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is none, integrity low, and availability none.
Is CVE-2026-48811 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (5th percentile), an estimate of the probability of exploitation in the next 30 days.
How do I fix CVE-2026-48811?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2026-48811 have an EU (EUVD) identifier?: Yes. CVE-2026-48811 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-33437.
When was CVE-2026-48811 published?: CVE-2026-48811 was published on 2026-05-29 and last updated on 2026-06-17.

References

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

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