CVE-2026-25966 (GCVE-0-2026-25966)

Vulnerability from cvelistv5 – Published: 2026-02-24 01:27 – Updated: 2026-02-24 01:27
VLAI?
Title
ImageMagick's Security Policy Bypass through config/policy-secure.xml via "fd handler" leads to stdin/stdout access
Summary
ImageMagick is free and open-source software used for editing and manipulating digital images. The shipped "secure" security policy includes a rule intended to prevent reading/writing from standard streams. However, ImageMagick also supports fd:<n> pseudo-filenames (e.g., fd:0, fd:1). Prior to versions 7.1.2-15 and 6.9.13-40, this path form is not blocked by the secure policy templates, and therefore bypasses the protection goal of "no stdin/stdout." Versions 7.1.2-15 and 6.9.13-40 contain a patch by including a change to the more secure policies by default. As a workaround, add the change to one's security policy manually.
Severity ?
5.9 (Medium)
CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L
CWE
  • CWE-284 - Improper Access Control
Assigner
References
Impacted products
Vendor Product Version
ImageMagick ImageMagick Affected: >= 7.0.0, < 7.1.2-15
Affected: < 6.9.13-40
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{
  "containers": {
    "cna": {
      "affected": [
        {
          "product": "ImageMagick",
          "vendor": "ImageMagick",
          "versions": [
            {
              "status": "affected",
              "version": "\u003e= 7.0.0, \u003c 7.1.2-15"
            },
            {
              "status": "affected",
              "version": "\u003c 6.9.13-40"
            }
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        }
      ],
      "descriptions": [
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          "lang": "en",
          "value": "ImageMagick is free and open-source software used for editing and manipulating digital images. The shipped \"secure\" security policy includes a rule intended to prevent reading/writing from standard streams. However, ImageMagick also supports fd:\u003cn\u003e pseudo-filenames (e.g., fd:0, fd:1). Prior to versions 7.1.2-15 and 6.9.13-40, this path form is not blocked by the secure policy templates, and therefore bypasses the protection goal of \"no stdin/stdout.\" Versions 7.1.2-15 and 6.9.13-40 contain a patch by including a change to the more secure policies by default. As a workaround, add the change to one\u0027s security policy manually."
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "attackComplexity": "LOW",
            "attackVector": "LOCAL",
            "availabilityImpact": "LOW",
            "baseScore": 5.9,
            "baseSeverity": "MEDIUM",
            "confidentialityImpact": "LOW",
            "integrityImpact": "LOW",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L",
            "version": "3.1"
          }
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-284",
              "description": "CWE-284: Improper Access Control",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-02-24T01:27:53.943Z",
        "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
        "shortName": "GitHub_M"
      },
      "references": [
        {
          "name": "https://github.com/ImageMagick/ImageMagick/security/advisories/GHSA-xwc6-v6g8-pw2h",
          "tags": [
            "x_refsource_CONFIRM"
          ],
          "url": "https://github.com/ImageMagick/ImageMagick/security/advisories/GHSA-xwc6-v6g8-pw2h"
        }
      ],
      "source": {
        "advisory": "GHSA-xwc6-v6g8-pw2h",
        "discovery": "UNKNOWN"
      },
      "title": "ImageMagick\u0027s Security Policy Bypass through config/policy-secure.xml via \"fd handler\" leads to stdin/stdout access"
    }
  },
  "cveMetadata": {
    "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
    "assignerShortName": "GitHub_M",
    "cveId": "CVE-2026-25966",
    "datePublished": "2026-02-24T01:27:53.943Z",
    "dateReserved": "2026-02-09T17:13:54.067Z",
    "dateUpdated": "2026-02-24T01:27:53.943Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2",
  "vulnerability-lookup:meta": {
    "nvd": "{\"cve\":{\"id\":\"CVE-2026-25966\",\"sourceIdentifier\":\"security-advisories@github.com\",\"published\":\"2026-02-24T02:16:01.330\",\"lastModified\":\"2026-02-25T11:59:20.327\",\"vulnStatus\":\"Analyzed\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"ImageMagick is free and open-source software used for editing and manipulating digital images. The shipped \\\"secure\\\" security policy includes a rule intended to prevent reading/writing from standard streams. However, ImageMagick also supports fd:\u003cn\u003e pseudo-filenames (e.g., fd:0, fd:1). Prior to versions 7.1.2-15 and 6.9.13-40, this path form is not blocked by the secure policy templates, and therefore bypasses the protection goal of \\\"no stdin/stdout.\\\" Versions 7.1.2-15 and 6.9.13-40 contain a patch by including a change to the more secure policies by default. As a workaround, add the change to one\u0027s security policy manually.\"},{\"lang\":\"es\",\"value\":\"ImageMagick es un software libre y de c\u00f3digo abierto utilizado para editar y manipular im\u00e1genes digitales. La pol\u00edtica de seguridad \u0027segura\u0027 que se distribuye incluye una regla destinada a prevenir la lectura/escritura desde flujos est\u00e1ndar. Sin embargo, ImageMagick tambi\u00e9n soporta pseudo-nombres de archivo fd: (por ejemplo, fd:0, fd:1). Antes de las versiones 7.1.2-15 y 6.9.13-40, esta forma de ruta no es bloqueada por las plantillas de pol\u00edtica segura, y por lo tanto elude el objetivo de protecci\u00f3n de \u0027no stdin/stdout\u0027. Las versiones 7.1.2-15 y 6.9.13-40 contienen un parche al incluir un cambio en las pol\u00edticas m\u00e1s seguras por defecto. Como soluci\u00f3n alternativa, a\u00f1ada el cambio a la pol\u00edtica de seguridad propia manualmente.\"}],\"metrics\":{\"cvssMetricV31\":[{\"source\":\"security-advisories@github.com\",\"type\":\"Secondary\",\"cvssData\":{\"version\":\"3.1\",\"vectorString\":\"CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L\",\"baseScore\":5.9,\"baseSeverity\":\"MEDIUM\",\"attackVector\":\"LOCAL\",\"attackComplexity\":\"LOW\",\"privilegesRequired\":\"NONE\",\"userInteraction\":\"NONE\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"LOW\",\"integrityImpact\":\"LOW\",\"availabilityImpact\":\"LOW\"},\"exploitabilityScore\":2.5,\"impactScore\":3.4},{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"cvssData\":{\"version\":\"3.1\",\"vectorString\":\"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H\",\"baseScore\":7.8,\"baseSeverity\":\"HIGH\",\"attackVector\":\"LOCAL\",\"attackComplexity\":\"LOW\",\"privilegesRequired\":\"LOW\",\"userInteraction\":\"NONE\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"HIGH\",\"integrityImpact\":\"HIGH\",\"availabilityImpact\":\"HIGH\"},\"exploitabilityScore\":1.8,\"impactScore\":5.9}]},\"weaknesses\":[{\"source\":\"security-advisories@github.com\",\"type\":\"Primary\",\"description\":[{\"lang\":\"en\",\"value\":\"CWE-284\"}]},{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"description\":[{\"lang\":\"en\",\"value\":\"NVD-CWE-noinfo\"}]}],\"configurations\":[{\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:imagemagick:imagemagick:*:*:*:*:*:*:*:*\",\"versionEndExcluding\":\"6.9.13-40\",\"matchCriteriaId\":\"C6F44A65-1733-4752-AAD0-BCCC7BDBC877\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:imagemagick:imagemagick:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"7.0.0-0\",\"versionEndExcluding\":\"7.1.2-15\",\"matchCriteriaId\":\"6AFFD439-1068-4B6F-AE01-724AC62CDCEA\"}]}]}],\"references\":[{\"url\":\"https://github.com/ImageMagick/ImageMagick/security/advisories/GHSA-xwc6-v6g8-pw2h\",\"source\":\"security-advisories@github.com\",\"tags\":[\"Third Party Advisory\"]}]}}"
  }
}


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  • 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.
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Detection rules are retrieved from Rulezet.