CVE-2025-48388: FreeScout Has Insufficient Protection Against CRLF-injection

7.0 CVSS

Description

FreeScout is a free self-hosted help desk and shared mailbox. Prior to version 1.8.178, the application performs insufficient validation of user-supplied data, which is used as arguments to string formatting functions. As a result, an attacker can pass a string containing special symbols (\r, \n, \t)to the application. This issue has been patched in version 1.8.178.

Classification

CVE ID: CVE-2025-48388

CVSS Base Severity: HIGH

CVSS Base Score: 7.0

CVSS Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:L/VA:L/SC:N/SI:N/SA:N

Problem Types

CWE-134: Use of Externally-Controlled Format String CWE-93: Improper Neutralization of CRLF Sequences ('CRLF Injection')

Affected Products

Vendor: freescout-help-desk

Product: freescout

Exploit Prediction Scoring System (EPSS)

EPSS Score: 0.06% (probability of being exploited)

EPSS Percentile: 17.77% (scored less or equal to compared to others)

EPSS Date: 2025-06-08 (when was this score calculated)

References

https://nvd.nist.gov/vuln/detail/CVE-2025-48388
https://github.com/freescout-help-desk/freescout/security/advisories/GHSA-c76f-wggm-grcq
https://github.com/freescout-help-desk/freescout/commit/eab97711027fff4bce90ccd2e189cbc184fa0370

Timeline