Vulnerability-Lookup

GHSA-9WV7-MM8F-M6CX

Vulnerability from github – Published: 2026-06-23 18:31 – Updated: 2026-06-23 18:31

Details

The XML‑RPC API addUser method has a validation bypass introduced in the fix for CVE‑2025‑55129. As a result, API users could create usernames that enabled impersonation or stored XSS attacks. Proper validation has been added where it was missing.

Severity

0.0 (None)


                  
                    CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:N

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{
  "affected": [],
  "aliases": [
    "CVE-2026-44961"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-287"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-06-23T17:17:00Z",
    "severity": "LOW"
  },
  "details": "The XML\u2011RPC API addUser method has a validation bypass introduced in the fix for CVE\u20112025\u201155129. As a result, API users could create usernames that enabled impersonation or stored XSS attacks. Proper validation has been added where it was missing.",
  "id": "GHSA-9wv7-mm8f-m6cx",
  "modified": "2026-06-23T18:31:42Z",
  "published": "2026-06-23T18:31:42Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-44961"
    },
    {
      "type": "WEB",
      "url": "https://hackerone.com/reports/3680090"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:N",
      "type": "CVSS_V3"
    }
  ]
}

CVE-2026-44961 (GCVE-0-2026-44961)

Vulnerability from cvelistv5 – Published: 2026-06-23 16:14 – Updated: 2026-06-23 17:44

Summary

Severity

0 (None)


                        
                          CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:N

SSVC

Exploitation: none Automatable: yes Technical Impact: partial

CISA Coordinator (v2.0.3)

CWE

CWE-287 - Improper Authentication - Generic

Assigner

hackerone

References

1 reference

URL	Tags
https://hackerone.com/reports/3680090

Impacted products

1 product

Vendor	Product	Version
Revive	Adserver	Affected: 0 , ≤ 6.0.6 (semver)

Credits

barcrange (3l4)

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JSON

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{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2026-44961",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "yes"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-06-23T17:32:45.247422Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2026-06-23T17:44:07.348Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Adserver",
          "vendor": "Revive",
          "versions": [
            {
              "lessThanOrEqual": "6.0.6",
              "status": "affected",
              "version": "0",
              "versionType": "semver"
            }
          ]
        }
      ],
      "credits": [
        {
          "lang": "en",
          "type": "reporter",
          "value": "barcrange (3l4)"
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "The XML\u2011RPC API addUser method has a validation bypass introduced in the fix for CVE\u20112025\u201155129. As a result, API users could create usernames that enabled impersonation or stored XSS attacks. Proper validation has been added where it was missing."
        }
      ],
      "metrics": [
        {
          "cvssV3_0": {
            "baseScore": 0,
            "baseSeverity": "NONE",
            "vectorString": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:N",
            "version": "3.0"
          }
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-287",
              "description": "CWE-287 Improper Authentication - Generic",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-06-23T16:14:38.126Z",
        "orgId": "36234546-b8fa-4601-9d6f-f4e334aa8ea1",
        "shortName": "hackerone"
      },
      "references": [
        {
          "url": "https://hackerone.com/reports/3680090"
        }
      ]
    }
  },
  "cveMetadata": {
    "assignerOrgId": "36234546-b8fa-4601-9d6f-f4e334aa8ea1",
    "assignerShortName": "hackerone",
    "cveId": "CVE-2026-44961",
    "datePublished": "2026-06-23T16:14:38.126Z",
    "dateReserved": "2026-05-08T15:00:02.447Z",
    "dateUpdated": "2026-06-23T17:44:07.348Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

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.

Action not permitted

GHSA-9WV7-MM8F-M6CX

CVE-2026-44961 (GCVE-0-2026-44961)

Tags

Sightings

Nomenclature