CVE-2026-128044 (GCVE-0-2026-128044)

Vulnerability from cvelistv5 – Published: 2026-11-13 09:33 – Updated: 2026-11-13 09:33
VLAI
Title
OpenMage magento-lts before 20.18.2 OAuth Callback URL Allowlist Bypass
Summary
OpenMage magento-lts before 20.18.2 and 21.x before 21.0.0-beta3 validates OAuth 1.0a oauth_callback URLs with a string-prefix check and falls back to accepting any well-formed URL. Attackers holding a leaked consumer key and secret can supply host-suffix, userinfo, or arbitrary callback URLs to capture an approving administrator's or customer's request token and verifier, then obtain an access token with the victim's API privileges.
Severity
8.7 (High)
CVSS:4.0/AV:N/AC:H/AT:P/PR:L/UI:P/VC:H/VI:H/VA:N/SC:H/SI:H/SA:N
7.7 (High)
CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:C/C:H/I:H/A:N
CWE
  • CWE-346 - Origin Validation Error
Assigner
VulnCheck CNA
References
Impacted products
Vendor Product Version
OpenMage magento-lts Affected: 0 , < 20.18.2 (semver)
Unaffected: 20.18.2 (semver)
Create a notification for this product.
OpenMage magento-lts Affected: 21.0.0-beta1 , < 21.0.0-beta3 (semver)
Unaffected: 21.0.0-beta3 (semver)
Create a notification for this product.
Date Public
2026-10-26 00:00
Credits
skeletonsec colinmollenhour Hanmac
Show details on NVD website
To clipboard 

{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "magento-lts",
          "vendor": "OpenMage",
          "versions": [
            {
              "lessThan": "20.18.2",
              "status": "affected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "status": "unaffected",
              "version": "20.18.2",
              "versionType": "semver"
            }
          ]
        },
        {
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          "product": "magento-lts",
          "vendor": "OpenMage",
          "versions": [
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              "version": "21.0.0-beta1",
              "versionType": "semver"
            },
            {
              "status": "unaffected",
              "version": "21.0.0-beta3",
              "versionType": "semver"
            }
          ]
        }
      ],
      "credits": [
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          "lang": "en",
          "type": "reporter",
          "value": "skeletonsec"
        },
        {
          "lang": "en",
          "type": "remediation developer",
          "value": "colinmollenhour"
        },
        {
          "lang": "en",
          "type": "remediation reviewer",
          "value": "Hanmac"
        }
      ],
      "datePublic": "2026-10-26T00:00:00.000Z",
      "descriptions": [
        {
          "lang": "en",
          "value": "OpenMage magento-lts before 20.18.2 and 21.x before 21.0.0-beta3 validates OAuth 1.0a oauth_callback URLs with a string-prefix check and falls back to accepting any well-formed URL. Attackers holding a leaked consumer key and secret can supply host-suffix, userinfo, or arbitrary callback URLs to capture an approving administrator\u0027s or customer\u0027s request token and verifier, then obtain an access token with the victim\u0027s API privileges."
        }
      ],
      "metrics": [
        {
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            "attackComplexity": "HIGH",
            "attackRequirements": "PRESENT",
            "attackVector": "NETWORK",
            "baseScore": 8.7,
            "baseSeverity": "HIGH",
            "privilegesRequired": "LOW",
            "subAvailabilityImpact": "NONE",
            "subConfidentialityImpact": "HIGH",
            "subIntegrityImpact": "HIGH",
            "userInteraction": "PASSIVE",
            "vectorString": "CVSS:4.0/AV:N/AC:H/AT:P/PR:L/UI:P/VC:H/VI:H/VA:N/SC:H/SI:H/SA:N",
            "version": "4.0",
            "vulnAvailabilityImpact": "NONE",
            "vulnConfidentialityImpact": "HIGH",
            "vulnIntegrityImpact": "HIGH"
          },
          "format": "CVSS"
        },
        {
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            "attackVector": "NETWORK",
            "availabilityImpact": "NONE",
            "baseScore": 7.7,
            "baseSeverity": "HIGH",
            "confidentialityImpact": "HIGH",
            "integrityImpact": "HIGH",
            "privilegesRequired": "LOW",
            "scope": "CHANGED",
            "userInteraction": "REQUIRED",
            "vectorString": "CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:C/C:H/I:H/A:N",
            "version": "3.1"
          },
          "format": "CVSS"
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-346",
              "description": "Origin Validation Error",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-11-13T09:33:55.592Z",
        "orgId": "83251b91-4cc7-4094-a5c7-464a1b83ea10",
        "shortName": "VulnCheck"
      },
      "references": [
        {
          "name": "GitHub Security Advisory (GHSA-mffc-h5pf-6f42)",
          "tags": [
            "vendor-advisory"
          ],
          "url": "https://github.com/OpenMage/magento-lts/security/advisories/GHSA-mffc-h5pf-6f42"
        },
        {
          "name": "Patch Commit",
          "tags": [
            "patch"
          ],
          "url": "https://github.com/OpenMage/magento-lts/commit/d03a00b60e4a2d4e5a00b44dbc66d25bc3b3fc8f"
        },
        {
          "name": "VulnCheck Advisory: OpenMage magento-lts before 20.18.2 OAuth Callback URL Allowlist Bypass",
          "tags": [
            "third-party-advisory"
          ],
          "url": "https://www.vulncheck.com/advisories/openmage-magento-lts-before-20.18.2-oauth-callback-url-allowlist-bypass"
        }
      ],
      "title": "OpenMage magento-lts before 20.18.2 OAuth Callback URL Allowlist Bypass",
      "x_generator": {
        "engine": "vulncheck-endgame"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "83251b91-4cc7-4094-a5c7-464a1b83ea10",
    "assignerShortName": "VulnCheck",
    "cveId": "CVE-2026-128044",
    "datePublished": "2026-11-13T09:33:55.592Z",
    "dateReserved": "2026-11-12T20:45:47.416Z",
    "dateUpdated": "2026-11-13T09:33:55.592Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}



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