What’s Vulnerable › Vulnerabilities

CVE-2025-48389: FreeScout Vulnerable to Deserialization of Untrusted Data

• Severity: high (CVSS 7.2 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 1.0% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2025-05-29 · updated 2026-06-17
• Weakness: CWE-502

Description

FreeScout is a free self-hosted help desk and shared mailbox. Prior to version 1.8.178, FreeScout is vulnerable to deserialization of untrusted data due to insufficient validation. Through the set function, a string with a serialized object can be passed, and when getting an option through the get method, deserialization will occur, which will allow arbitrary code execution This issue has been patched in version 1.8.178.

Affected products

• freescout-help-desk freescout: before 1.8.178 — fixed in 1.8.178

How to fix

Upgrade to a fixed version: freescout-help-desk freescout 1.8.178. Check the vendor advisory for mitigations.

References

• https://github.com/freescout-help-desk/freescout/commit/f7548a7076a0b6e109001069d6be223fbd96c61e
• https://github.com/freescout-help-desk/freescout/security/advisories/GHSA-jmpv-8q3h-2m8v

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