Vulnerability-Lookup

GHSA-VRMV-J3X6-C7MM

Vulnerability from github – Published: 2026-01-16 00:30 – Updated: 2026-01-16 00:30

Details

The injected content is rendered verbatim when support cases are viewed by other users, including support staff with elevated privileges, allowing execution of arbitrary JavaScript in the victim’s browser context.

Severity ?

6.1 (Medium)


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

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JSON

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{
  "affected": [],
  "aliases": [
    "CVE-2026-1011"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-79"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-01-16T00:16:29Z",
    "severity": "MODERATE"
  },
  "details": "A stored cross-site scripting (XSS) vulnerability exists in the Altium Support Center AddComment endpoint due to missing server-side input sanitization. Although the client interface applies HTML escaping, the backend accepts and stores arbitrary HTML and JavaScript supplied via modified POST requests.\n\nThe injected content is rendered verbatim when support cases are viewed by other users, including support staff with elevated privileges, allowing execution of arbitrary JavaScript in the victim\u2019s browser context.",
  "id": "GHSA-vrmv-j3x6-c7mm",
  "modified": "2026-01-16T00:30:55Z",
  "published": "2026-01-16T00:30:55Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-1011"
    },
    {
      "type": "WEB",
      "url": "https://www.altium.com/platform/security-compliance/security-advisories"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N",
      "type": "CVSS_V3"
    }
  ]
}

CVE-2026-1011 (GCVE-0-2026-1011)

Vulnerability from cvelistv5 – Published: 2026-01-15 23:08 – Updated: 2026-01-22 01:39

Title

Stored Cross-Site Scripting in Altium Live Support Center Comment Endpoint

Summary

A stored cross-site scripting (XSS) vulnerability exists in the Altium Support Center AddComment endpoint due to missing server-side input sanitization. Although the client interface applies HTML escaping, the backend accepts and stores arbitrary HTML and JavaScript supplied via modified POST requests. The injected content is rendered verbatim when support cases are viewed by other users, including support staff with elevated privileges, allowing execution of arbitrary JavaScript in the victim’s browser context.

Severity ?

6.1 (Medium)


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

CWE

CWE-79 - Improper Neutralization of Input During Web Page Generation (Cross-site Scripting)
CWE-116 - Improper Encoding or Escaping of Output

Assigner

Altium

References

URL

Tags

https://www.altium.com/platform/security-complian…

Impacted products

	Vendor	Product	Version
	Altium	Altium Live	Affected: 0 , ≤ 1.1.1.39 (semver)

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JSON

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{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "modules": [
            "Support case comment rendering (AddComment endpoint)"
          ],
          "platforms": [
            "Web"
          ],
          "product": "Altium Live",
          "vendor": "Altium",
          "versions": [
            {
              "changes": [
                {
                  "at": "1.1.1.40",
                  "status": "unaffected"
                }
              ],
              "lessThanOrEqual": "1.1.1.39",
              "status": "affected",
              "version": "0",
              "versionType": "semver"
            }
          ]
        }
      ],
      "datePublic": "2026-01-15T23:01:00.000Z",
      "descriptions": [
        {
          "lang": "en",
          "supportingMedia": [
            {
              "base64": false,
              "type": "text/html",
              "value": "A stored cross-site scripting (XSS) vulnerability exists in the Altium Support Center AddComment endpoint due to missing server-side input sanitization. Although the client interface applies HTML escaping, the backend accepts and stores arbitrary HTML and JavaScript supplied via modified POST requests.\u003cbr\u003e\u003cbr\u003eThe injected content is rendered verbatim when support cases are viewed by other users, including support staff with elevated privileges, allowing execution of arbitrary JavaScript in the victim\u2019s browser context.\u003cbr\u003e\u003cbr\u003e"
            }
          ],
          "value": "A stored cross-site scripting (XSS) vulnerability exists in the Altium Support Center AddComment endpoint due to missing server-side input sanitization. Although the client interface applies HTML escaping, the backend accepts and stores arbitrary HTML and JavaScript supplied via modified POST requests.\n\nThe injected content is rendered verbatim when support cases are viewed by other users, including support staff with elevated privileges, allowing execution of arbitrary JavaScript in the victim\u2019s browser context."
        }
      ],
      "impacts": [
        {
          "capecId": "CAPEC-63",
          "descriptions": [
            {
              "lang": "en",
              "value": "CAPEC-63 Cross-Site Scripting"
            }
          ]
        },
        {
          "capecId": "CAPEC-98",
          "descriptions": [
            {
              "lang": "en",
              "value": "CAPEC-98 Phishing"
            }
          ]
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "NONE",
            "baseScore": 6.1,
            "baseSeverity": "MEDIUM",
            "confidentialityImpact": "LOW",
            "integrityImpact": "LOW",
            "privilegesRequired": "NONE",
            "scope": "CHANGED",
            "userInteraction": "REQUIRED",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N",
            "version": "3.1"
          },
          "format": "CVSS",
          "scenarios": [
            {
              "lang": "en",
              "value": "GENERAL"
            }
          ]
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-79",
              "description": "CWE-79 Improper Neutralization of Input During Web Page Generation (Cross-site Scripting)",
              "lang": "en",
              "type": "CWE"
            }
          ]
        },
        {
          "descriptions": [
            {
              "cweId": "CWE-116",
              "description": "CWE-116 Improper Encoding or Escaping of Output",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-01-22T01:39:11.948Z",
        "orgId": "4760f414-e1ae-4ff1-bdad-c7a9c3538b79",
        "shortName": "Altium"
      },
      "references": [
        {
          "url": "https://www.altium.com/platform/security-compliance/security-advisories"
        }
      ],
      "source": {
        "discovery": "UNKNOWN"
      },
      "title": "Stored Cross-Site Scripting in Altium Live Support Center Comment Endpoint",
      "x_generator": {
        "engine": "Vulnogram 0.5.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "4760f414-e1ae-4ff1-bdad-c7a9c3538b79",
    "assignerShortName": "Altium",
    "cveId": "CVE-2026-1011",
    "datePublished": "2026-01-15T23:08:01.260Z",
    "dateReserved": "2026-01-15T22:08:48.882Z",
    "dateUpdated": "2026-01-22T01:39:11.948Z",
    "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-VRMV-J3X6-C7MM

CVE-2026-1011 (GCVE-0-2026-1011)

Tags

Sightings

Nomenclature