CVE-2026-107448 (GCVE-0-2026-107448)

Vulnerability from cvelistv5 – Published: 2026-10-08 03:57 – Updated: 2026-10-08 03:57
VLAI
Summary
Magic: The Gathering Arena (Windows/Steam client; 2026.59.30.12801.127931.6 and certain later 2026.60.x builds) passes a server-supplied URL from a home-screen carousel GoToExternalUrl action directly to the Windows shell via Application.OpenURL/ShellExecuteW without validating the URI scheme or domain. A hypothetical attacker able to control the carousel content delivered to clients can cause arbitrary registered URI-scheme handlers to be invoked on client hosts with no user interaction. For example, one might expect that the carousel content only has https: URIs, not ms-calculator: URIs.
Severity
3.4 (Low)
CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:C/C:N/I:L/A:N
CWE
  • CWE-99 - Improper Control of Resource Identifiers ('Resource Injection')
Assigner
mitre CNA under the mitre root
CNA scorecard E 27/100 over 2373 records in the last 180 days details
References
Impacted products
Vendor Product Version CPE status
Wizards of the Coast Magic: The Gathering Arena Affected: 2026.59.30.12801.127931.6 (custom)
guessed Create a notification for this product.
Show details on NVD website
To clipboard 

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          "platforms": [
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          "product": "Magic: The Gathering Arena",
          "vendor": "Wizards of the Coast",
          "versions": [
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        }
      ],
      "metrics": [
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          "cvssV3_1": {
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            "attackVector": "ADJACENT_NETWORK",
            "availabilityImpact": "NONE",
            "baseScore": 3.4,
            "baseSeverity": "LOW",
            "confidentialityImpact": "NONE",
            "integrityImpact": "LOW",
            "privilegesRequired": "NONE",
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              "description": "CWE-99 Improper Control of Resource Identifiers (\u0027Resource Injection\u0027)",
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    "datePublished": "2026-10-08T03:57:54.878Z",
    "dateReserved": "2026-10-08T03:57:54.085Z",
    "dateUpdated": "2026-10-08T03:57:54.878Z",
    "state": "PUBLISHED"
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                "vendor": "Wizards of the Coast",
                "versions": [
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                    "version": "2026.59.30.12801.127931.6",
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        "descriptions": [
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            "value": "Magic: The Gathering Arena (Windows/Steam client; 2026.59.30.12801.127931.6 and certain later 2026.60.x builds) passes a server-supplied URL from a home-screen carousel GoToExternalUrl action directly to the Windows shell via Application.OpenURL/ShellExecuteW without validating the URI scheme or domain. A hypothetical attacker able to control the carousel content delivered to clients can cause arbitrary registered URI-scheme handlers to be invoked on client hosts with no user interaction. For example, one might expect that the carousel content only has https: URIs, not ms-calculator: URIs."
          }
        ],
        "id": "CVE-2026-107448",
        "lastModified": "2026-10-08T21:33:42.423",
        "metrics": {
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                "confidentialityImpact": "NONE",
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  }
}



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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

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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.



Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.