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

Quick assessment

Affected
boazsegev facil.io
Exploitation
Public or AI PoC available; prioritize validation
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

boazsegev facil.io是boazsegev个人开发者的嵌入式Web服务器。 Bo facil.io 0.7.4及之前版本存在输入验证错误漏洞，该漏洞源于WebSocket Frame Parser组件的lib/facil/http/parsers/websocket_parser.h库中websocket_on_protocol_error函数对参数on_message的操作存在输入验证不当，可能导致远程攻击。

CVSS 7.3 · High EPSS 0.52% · P42

Affected Version Matrix 5

VendorProduct Version RangeStatus
boazsegev facil.io 0.7.0 affected
0.7.1 affected
0.7.2 affected
0.7.3 affected
0.7.4 affected
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I. Basic Information for CVE-2026-16632

Vulnerability Information
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Vulnerability Title
boazsegev facil.io WebSocket Frame websocket_parser.h websocket_on_protocol_error input validation
Source: CVE Program / CVE List V5
Vulnerability 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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L
Source: CVE Program / CVE List V5
Vulnerability Type
输入验证不恰当
Source: CVE Program / CVE List V5
Vulnerability Title
Bo facil.io 输入验证错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
boazsegev facil.io是boazsegev个人开发者的嵌入式Web服务器。 Bo facil.io 0.7.4及之前版本存在输入验证错误漏洞，该漏洞源于WebSocket Frame Parser组件的lib/facil/http/parsers/websocket_parser.h库中websocket_on_protocol_error函数对参数on_message的操作存在输入验证不当，可能导致远程攻击。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
boazsegev facil.io 0.7.0 cpe:2.3:a:boazsegev:facil.io:*:*:*:*:*:*:*:*

II. Public POCs for CVE-2026-16632

# POC Description Source Link Shenlong Link
AI-Generated POC Premium
Qwen3.6-35B-A3B · 8887 chars
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III. Intelligence Information for CVE-2026-16632

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Other References for CVE-2026-16632 (2)

IV. Related Vulnerabilities

Same product: facil.io
Same vendor: boazsegev
Same weakness: CWE-20

V. Comments for CVE-2026-16632

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