CVE-2026-16632

HIGH 7.3

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

CVSS Score

7.3

EPSS Score

0.0%

EPSS Percentile

0th

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.

CWE	CWE-20
Vendor	boazsegev
Product	facil.io
Published	Jul 22, 2026

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CVSS v3 Breakdown

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L/E:P/RL:X/RC:R

Attack Vector

Attack Complexity

Privileges Required

User Interaction

Scope

Confidentiality

Integrity

Availability

Affected Versions

boazsegev / facil.io

0.7.0 0.7.1 0.7.2 0.7.3 0.7.4

References

NVD ↗ CVE.org ↗ EPSS Data ↗

vuldb.com: https://vuldb.com/vuln/382382 vuldb.com: https://vuldb.com/vuln/382382/cti vuldb.com: https://vuldb.com/cve/CVE-2026-16632 vuldb.com: https://vuldb.com/submit/860585 github.com: https://github.com/boazsegev/facil.io/issues/169 github.com: https://github.com/boazsegev/facil.io/

Credits

🔍 Fantasy_2026 (VulDB User) VulDB CNA Team