Input validation error in Netatalk - CVE-2026-49390
Published: June 3, 2026 / Updated: July 28, 2026
Vulnerability identifier: #VU133290
CSH Severity: Low
CVSS v4: 2.3 [CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-49390
CWE-ID: CWE-20
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.
The vulnerability exists due to the "server quantum" option in afp.conf is not range-validated during configuration parsing. A remote user can pass specially crafted input to the application and perform a denial of service (DoS) attack.
Affected software
Netatalk
How to mitigate CVE-2026-49390
Install updates from vendor's website.
Netatalk - update to 4.5.0