CVE-2026-16632 MEDIUM

CVE-2026-16632: boazsegev facil.io WebSocket Frame websocket_parser.h websocket_on_protocol_error input validation

Vendor Boazsegev
Product facil.io
Weakness CWE-20 · Input validation
Published July 22, 2026
Last update July 23, 2026

CVSS base score

6.9/10
Attack vector Network
Attack complexity Low
Privileges required None
User interaction None
Confidentiality
Integrity

CVSS vector

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

What the vulnerability does

01Description

A flaw has been found in boazsegev facil.io up to 0.7.4. Affected is the function websocket_on_protocol_error in the library lib/facil/http/parsers/websocket_parser.h of the component WebSocket Frame Parser. This manipulation of the argument on_message causes improper input validation. The attack can be initiated remotely. The exploit has been published and may be used. The project was informed of the problem early through an issue report but has not responded yet.

Key dates

02Disclosure timeline

July 22, 2026 CVE published
July 23, 2026 Record updated

Related vulnerabilities

04Related CVE