Vulnerability-Lookup

CVE-2026-16632 (GCVE-0-2026-16632)

Vulnerability from cvelistv5 – Published: 2026-07-22 23:45 – Updated: 2026-07-23 15:36

Title

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

Summary

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.

Severity

6.9 (Medium)


                        
                          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

7.3 (High)


                        
                          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

7.3 (High)


                        
                          CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L/E:P/RL:X/RC:R

SSVC

Exploitation: poc Automatable: yes Technical Impact: partial

CISA Coordinator (v2.0.3)

CWE

CWE-20 - Improper Input Validation

Assigner

VulDB

References

6 references

URL	Tags
https://vuldb.com/vuln/382382	vdb-entrytechnical-description
https://vuldb.com/vuln/382382/cti	signaturepermissions-required
https://vuldb.com/cve/CVE-2026-16632	third-party-advisory
https://vuldb.com/submit/860585	third-party-advisory
https://github.com/boazsegev/facil.io/issues/169	exploitissue-tracking
https://github.com/boazsegev/facil.io/	product

Impacted products

1 product

Vendor	Product	Version
boazsegev	facil.io	Affected: 0.7.0 Affected: 0.7.1 Affected: 0.7.2 Affected: 0.7.3 Affected: 0.7.4 cpe:2.3:a:boazsegev:facil.io::::::::

Credits

Fantasy_2026 (VulDB User) VulDB CNA Team

Show details on NVD website

JSON

To clipboard

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FKIE_CVE-2026-16632

Vulnerability from fkie_nvd - Published: 2026-07-23 00:16 - Updated: 2026-07-23 00:16

Severity

7.3 (High) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L

Summary

References

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

Impacted products

	Vendor	Product	Version

JSON

To clipboard

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    {
      "affectedData": [
        {
          "cpes": [
            "cpe:2.3:a:boazsegev:facil.io:*:*:*:*:*:*:*:*"
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          "vendor": "boazsegev",
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            },
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    }
  ],
  "id": "CVE-2026-16632",
  "lastModified": "2026-07-23T00:16:28.020",
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          "version": "2.0"
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        "impactScore": 6.4,
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          "version": "3.1"
        },
        "exploitabilityScore": 3.9,
        "impactScore": 3.4,
        "source": "cna@vuldb.com",
        "type": "Primary"
      }
    ],
    "cvssMetricV40": [
      {
        "cvssData": {
          "Automatable": "NOT_DEFINED",
          "Recovery": "NOT_DEFINED",
          "Safety": "NOT_DEFINED",
          "attackComplexity": "LOW",
          "attackRequirements": "NONE",
          "attackVector": "NETWORK",
          "availabilityRequirement": "NOT_DEFINED",
          "baseScore": 5.5,
          "baseSeverity": "MEDIUM",
          "confidentialityRequirement": "NOT_DEFINED",
          "exploitMaturity": "PROOF_OF_CONCEPT",
          "integrityRequirement": "NOT_DEFINED",
          "modifiedAttackComplexity": "NOT_DEFINED",
          "modifiedAttackRequirements": "NOT_DEFINED",
          "modifiedAttackVector": "NOT_DEFINED",
          "modifiedPrivilegesRequired": "NOT_DEFINED",
          "modifiedSubAvailabilityImpact": "NOT_DEFINED",
          "modifiedSubConfidentialityImpact": "NOT_DEFINED",
          "modifiedSubIntegrityImpact": "NOT_DEFINED",
          "modifiedUserInteraction": "NOT_DEFINED",
          "modifiedVulnAvailabilityImpact": "NOT_DEFINED",
          "modifiedVulnConfidentialityImpact": "NOT_DEFINED",
          "modifiedVulnIntegrityImpact": "NOT_DEFINED",
          "privilegesRequired": "NONE",
          "providerUrgency": "NOT_DEFINED",
          "subAvailabilityImpact": "NONE",
          "subConfidentialityImpact": "NONE",
          "subIntegrityImpact": "NONE",
          "userInteraction": "NONE",
          "valueDensity": "NOT_DEFINED",
          "vectorString": "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/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X",
          "version": "4.0",
          "vulnAvailabilityImpact": "LOW",
          "vulnConfidentialityImpact": "LOW",
          "vulnIntegrityImpact": "LOW",
          "vulnerabilityResponseEffort": "NOT_DEFINED"
        },
        "source": "cna@vuldb.com",
        "type": "Secondary"
      }
    ]
  },
  "published": "2026-07-23T00:16:28.020",
  "references": [
    {
      "source": "cna@vuldb.com",
      "url": "https://github.com/boazsegev/facil.io/"
    },
    {
      "source": "cna@vuldb.com",
      "url": "https://github.com/boazsegev/facil.io/issues/169"
    },
    {
      "source": "cna@vuldb.com",
      "url": "https://vuldb.com/cve/CVE-2026-16632"
    },
    {
      "source": "cna@vuldb.com",
      "url": "https://vuldb.com/submit/860585"
    },
    {
      "source": "cna@vuldb.com",
      "url": "https://vuldb.com/vuln/382382"
    },
    {
      "source": "cna@vuldb.com",
      "url": "https://vuldb.com/vuln/382382/cti"
    }
  ],
  "sourceIdentifier": "cna@vuldb.com",
  "vulnStatus": "Received",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-20"
        }
      ],
      "source": "cna@vuldb.com",
      "type": "Primary"
    }
  ]
}

GHSA-5G3V-WH7G-2XVV

Vulnerability from github – Published: 2026-07-23 00:31 – Updated: 2026-07-23 00:31

Details

Severity

7.3 (High)


                  
                    CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L

5.5 (Medium)


                  
                    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

Show details on source website

JSON

To clipboard

{
  "affected": [],
  "aliases": [
    "CVE-2026-16632"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-20"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-07-23T00:16:28Z",
    "severity": "MODERATE"
  },
  "details": "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.",
  "id": "GHSA-5g3v-wh7g-2xvv",
  "modified": "2026-07-23T00:31:30Z",
  "published": "2026-07-23T00:31:30Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-16632"
    },
    {
      "type": "WEB",
      "url": "https://github.com/boazsegev/facil.io/issues/169"
    },
    {
      "type": "WEB",
      "url": "https://github.com/boazsegev/facil.io"
    },
    {
      "type": "WEB",
      "url": "https://vuldb.com/cve/CVE-2026-16632"
    },
    {
      "type": "WEB",
      "url": "https://vuldb.com/submit/860585"
    },
    {
      "type": "WEB",
      "url": "https://vuldb.com/vuln/382382"
    },
    {
      "type": "WEB",
      "url": "https://vuldb.com/vuln/382382/cti"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L",
      "type": "CVSS_V3"
    },
    {
      "score": "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/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X",
      "type": "CVSS_V4"
    }
  ]
}

Sightings

Author	Source	Type	Date	Other

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

Detection rules are retrieved from Rulezet.

The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.

Action not permitted

CVE-2026-16632 (GCVE-0-2026-16632)

FKIE_CVE-2026-16632

GHSA-5G3V-WH7G-2XVV

Tags

Sightings

Nomenclature