Input validation error in Netatalk - CVE-2026-62319
Published: November 9, 2026
Vulnerability identifier: #VU162849
CSH Severity: Low
CVSS v4: 5.3 [CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-62319
CWE-ID: CWE-20
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote authenticated attacker to smuggle DSI requests and desynchronize an AFP connection to Netatalk.
The vulnerability exists due to missing validation in the afpd DSIWrite receive path when a request's data offset exceeds its declared frame length. A remote authenticated attacker can send a malformed frame followed by queued data, causing the server to consume bytes beyond the frame boundary and parse an attacker-controlled subsequent DSI header and payload.
Affected software
Netatalk
How to mitigate CVE-2026-62319
Install security update from vendor's website.
Netatalk - update to 4.5.1