CVE-2026-16632CWE-20

boazsegev facil.io WebSocket Frame websocket_parser.h websocket_on_protocol_error input validation

Medium · published July 22, 2026

CVSS v4.0
6.9
EPSS
1%
Percentile
43.5
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v4.0
6.9 · MEDIUM
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
EPSS
0.00522 · 43.5th percentile
Weakness
CWE-20 · Improper Input Validation
Published
2026-07-22T23:45Z
EPSS history
Timeline
  • 22 JUL 23:45Z
    boazsegev facil.io WebSocket Frame websocket_parser.h websocket_on_protocol_error input validation
    cvelistv5