FreeScout: Improper Authorization in Phone Conversation Creation Enables Cross-Mailbox Hidden Customer Modification
Published Apr 21, 2026
7.1
HIGHCVSS 3.1
EPSS 0.34%
Description
FreeScout is a free self-hosted help desk and shared mailbox. Prior to version 1.8.214, the phone-conversation creation flow accepts attacker-controlled `customer_id`, `name`, `to_email`, and `phone` values and resolves the target customer in the backend without enforcing mailbox-scoped customer visibility. As a result, a low-privileged agent who can create a phone conversation in Mailbox A can bind the new Mailbox A phone conversation to a hidden customer from Mailbox B and add a new alias email to that hidden customer record by supplying `to_email`. Version 1.8.214 fixes the vulnerability.
Affected products
-
- Version < 1.8.214StatusaffectedConstraints-
- Version
Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).
| Vendor | Product | Default status | Versions | ||||||
|---|---|---|---|---|---|---|---|---|---|
| Freescout-Help-Desk | Freescout | n/a |
|
No data.
No data.
No Red Hat product state for this CVE.
No package ranges for this CVE.
Remediation
No remediation recorded yet.
References (4)
- https://euvd.enisa.europa.eu/vulnerability/EUVD-2026-24187 Advisory
- https://github.com/freescout-help-desk/freescout/commit/83eea1ca47d97c6cdc90c501734bc2579b014a34 x_refsource_MISC
- https://github.com/freescout-help-desk/freescout/releases/tag/1.8.214 x_refsource_MISC
- https://github.com/freescout-help-desk/freescout/security/advisories/GHSA-9ff4-mmhv-x6jp exploitx_refsource_CONFIRM
| Link | Providers | Tags |
|---|---|---|
| https://euvd.enisa.europa.eu/vulnerability/EUVD-2026-24187 | Advisory | |
| https://github.com/freescout-help-desk/freescout/commit/83eea1ca47d97c6cdc90c501734bc2579b014a34 | x_refsource_MISC | |
| https://github.com/freescout-help-desk/freescout/releases/tag/1.8.214 | x_refsource_MISC | |
| https://github.com/freescout-help-desk/freescout/security/advisories/GHSA-9ff4-mmhv-x6jp | exploitx_refsource_CONFIRM |
Change history (0)
No recorded changes yet.