Vulnerability-Lookup

GHSA-F688-GWJ3-8H54

Vulnerability from github – Published: 2026-02-11 15:30 – Updated: 2026-02-11 15:30

Details

Proctorio Chrome Extension is a browser extension used for online proctoring. The extension contains multiple window.addEventListener('message', ...) handlers that do not properly validate the origin of incoming messages. Specifically, an internal messaging bridge processes messages based solely on the presence of a fromWebsite property without verifying the event.origin attribute.

Severity ?

3.6 (Low)


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

Show details on source website

JSON

To clipboard

{
  "affected": [],
  "aliases": [
    "CVE-2026-2345"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-346"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-02-11T15:16:18Z",
    "severity": "LOW"
  },
  "details": "Proctorio Chrome Extension is a browser extension used for online proctoring. The extension contains multiple window.addEventListener(\u0027message\u0027, ...) handlers that do not properly validate the origin of incoming messages. Specifically, an internal messaging bridge processes messages based solely on the presence of a fromWebsite property without verifying the event.origin attribute.",
  "id": "GHSA-f688-gwj3-8h54",
  "modified": "2026-02-11T15:30:27Z",
  "published": "2026-02-11T15:30:27Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-2345"
    },
    {
      "type": "WEB",
      "url": "https://www.hckrt.com/hacktivity/46b61f36-b685-4667-aebf-82a67ad69ad6"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:U/C:L/I:L/A:N",
      "type": "CVSS_V3"
    }
  ]
}

CVE-2026-2345 (GCVE-0-2026-2345)

Vulnerability from cvelistv5 – Published: 2026-02-11 14:49 – Updated: 2026-02-11 21:19

Title

Insufficient Origin Validation in Proctorio Chrome Extension postMessage Handlers

Summary

Severity ?

3.6 (Low)


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

CWE

CWE-346 - Origin Validation Error

Assigner

Hackrate

References

URL

Tags

https://www.hckrt.com/hacktivity/46b61f36-b685-46…

Impacted products

	Vendor	Product	Version
	Proctorio	Secure Exam Proctor Extension	Affected: 1.5.25220.33 Unaffected: 1.5.25220.36

Credits

Caen Jones (@vcc3v)

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2026-2345",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-02-11T21:19:02.758590Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2026-02-11T21:19:08.551Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Secure Exam Proctor Extension",
          "vendor": "Proctorio",
          "versions": [
            {
              "status": "affected",
              "version": "1.5.25220.33"
            },
            {
              "status": "unaffected",
              "version": "1.5.25220.36"
            }
          ]
        }
      ],
      "credits": [
        {
          "lang": "en",
          "type": "reporter",
          "value": "Caen Jones (@vcc3v)"
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "supportingMedia": [
            {
              "base64": false,
              "type": "text/html",
              "value": "\u003cp\u003eProctorio Chrome Extension is a browser extension used for online proctoring. The extension contains multiple window.addEventListener(\u0027message\u0027, ...) handlers that do not properly validate the origin of incoming messages. Specifically, an internal messaging bridge processes messages based solely on the presence of a fromWebsite property without verifying the event.origin attribute.\u003cbr\u003e\u003c/p\u003e"
            }
          ],
          "value": "Proctorio Chrome Extension is a browser extension used for online proctoring. The extension contains multiple window.addEventListener(\u0027message\u0027, ...) handlers that do not properly validate the origin of incoming messages. Specifically, an internal messaging bridge processes messages based solely on the presence of a fromWebsite property without verifying the event.origin attribute."
        }
      ],
      "impacts": [
        {
          "capecId": "CAPEC-63",
          "descriptions": [
            {
              "lang": "en",
              "value": "CAPEC-63 Cross-Site Scripting (XSS)"
            }
          ]
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "attackComplexity": "HIGH",
            "attackVector": "LOCAL",
            "availabilityImpact": "NONE",
            "baseScore": 3.6,
            "baseSeverity": "LOW",
            "confidentialityImpact": "LOW",
            "integrityImpact": "LOW",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "userInteraction": "REQUIRED",
            "vectorString": "CVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:U/C:L/I:L/A:N",
            "version": "3.1"
          },
          "format": "CVSS",
          "scenarios": [
            {
              "lang": "en",
              "value": "GENERAL"
            }
          ]
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-346",
              "description": "CWE-346 Origin Validation Error",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-02-11T14:49:44.991Z",
        "orgId": "7004884b-51e2-48e8-b4a2-5ca29e80453e",
        "shortName": "Hackrate"
      },
      "references": [
        {
          "url": "https://www.hckrt.com/hacktivity/46b61f36-b685-4667-aebf-82a67ad69ad6"
        }
      ],
      "source": {
        "discovery": "UNKNOWN"
      },
      "title": "Insufficient Origin Validation in Proctorio Chrome Extension postMessage Handlers",
      "x_generator": {
        "engine": "Vulnogram 0.5.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "7004884b-51e2-48e8-b4a2-5ca29e80453e",
    "assignerShortName": "Hackrate",
    "cveId": "CVE-2026-2345",
    "datePublished": "2026-02-11T14:49:44.991Z",
    "dateReserved": "2026-02-11T14:45:32.162Z",
    "dateUpdated": "2026-02-11T21:19:08.551Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

Sightings

Author	Source	Type	Date

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.

Action not permitted

GHSA-F688-GWJ3-8H54

CVE-2026-2345 (GCVE-0-2026-2345)

Tags

Sightings

Nomenclature