CVE-2026-16632

HIGH

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

Title source: cna
STIX 2.1

Description

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.

References (6)

Core 6
Core References
Vdb Entry, Technical Description vdb-entry technical-description
VDB-382382 | boazsegev facil.io WebSocket Frame websocket_parser.h websocket_on_protocol_error input validation
https://vuldb.com/vuln/382382
Signature, Permissions Required signature permissions-required
VDB-382382 | CTI Indicators (IOB, IOC, IOA)
https://vuldb.com/vuln/382382/cti
Third Party Advisory third-party-advisory
CVE-2026-16632 | CVE Analysis and Report
https://vuldb.com/cve/CVE-2026-16632
Third Party Advisory third-party-advisory
Submit #860585 | facil.io <= 0.7.4 Improper Input Validation
https://vuldb.com/submit/860585
Exploit exploit issue-tracking
https://github.com/boazsegev/facil.io/issues/169

Scores

CVSS v3 7.3
EPSS 0.0031
EPSS Percentile 23.4%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L

CISA SSVC

Vulnrichment
Exploitation poc
Automatable yes
Technical Impact partial

Details

CWE
CWE-20
Status published
Products (5)
boazsegev/facil.io 0.7.0
boazsegev/facil.io 0.7.1
boazsegev/facil.io 0.7.2
boazsegev/facil.io 0.7.3
boazsegev/facil.io 0.7.4
Published Jul 23, 2026
Tracked Since Jul 23, 2026