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CVE-2025-6493

Estado: AplazadaMedia (5.5)—

A weakness has been identified in CodeMirror up to 5.65.20. Affected is an unknown function of the file mode/markdown/markdown.js of the component Markdown Mode. This manipulation causes inefficient regular expression complexity. It is possible to initiate the attack remotely. The exploit has been made available to the public and could be exploited. Upgrading to version 6.0 is able to address this issue. You should upgrade the affected component. Not all code samples mentioned in the GitHub issue can be found. The repository mentions, that "CodeMirror 6 exists, and is [...] much more actively maintained."

CVSS

Probabilidad de explotación (EPSS)

EPSS (Exploit Prediction Scoring System, de FIRST) estima la probabilidad de que una vulnerabilidad sea explotada en 30 días. Complementa a CVSS (impacto) y a CISA KEV (explotación confirmada).

Tecnologías afectadas (1)

⚠ Inferidas por IA a partir de la descripción — NVD aún no ha analizado esta CVE; no son CPE verificados.

Codemirror — CodemirrorAI

CWE

Referencias

JSON original (NVD)

Mostrar
{
  "id": "CVE-2025-6493",
  "cveTags": [],
  "metrics": {
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2025-6493",
          "role": "CISA Coordinator",
          "options": [
            {
              "exploitation": "poc"
            },
            {
              "automatable": "yes"
            },
            {
              "technicalImpact": "partial"
            }
          ],
          "version": "2.0.3",
          "timestamp": "2025-06-23T15:43:06.172562Z"
        }
      }
    ],
    "cvssMetricV2": [
      {
        "type": "Secondary",
        "source": "cna@vuldb.com",
        "cvssData": {
          "version": "2.0",
          "baseScore": 5,
          "accessVector": "NETWORK",
          "vectorString": "AV:N/AC:L/Au:N/C:N/I:N/A:P",
          "authentication": "NONE",
          "integrityImpact": "NONE",
          "accessComplexity": "LOW",
          "availabilityImpact": "PARTIAL",
          "confidentialityImpact": "NONE"
        },
        "acInsufInfo": false,
        "impactScore": 2.9,
        "baseSeverity": "MEDIUM",
        "obtainAllPrivilege": false,
        "exploitabilityScore": 10,
        "obtainUserPrivilege": false,
        "obtainOtherPrivilege": false,
        "userInteractionRequired": false
      }
    ],
    "cvssMetricV31": [
      {
        "type": "Secondary",
        "source": "cna@vuldb.com",
        "cvssData": {
          "scope": "UNCHANGED",
          "version": "3.1",
          "baseScore": 5.3,
          "attackVector": "NETWORK",
          "baseSeverity": "MEDIUM",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L",
          "integrityImpact": "NONE",
          "userInteraction": "NONE",
          "attackComplexity": "LOW",
          "availabilityImpact": "LOW",
          "privilegesRequired": "NONE",
          "confidentialityImpact": "NONE"
        },
        "impactScore": 1.4,
        "exploitabilityScore": 3.9
      }
    ],
    "cvssMetricV40": [
      {
        "type": "Secondary",
        "source": "cna@vuldb.com",
        "cvssData": {
          "Safety": "NOT_DEFINED",
          "version": "4.0",
          "Recovery": "NOT_DEFINED",
          "baseScore": 5.5,
          "Automatable": "NOT_DEFINED",
          "attackVector": "NETWORK",
          "baseSeverity": "MEDIUM",
          "valueDensity": "NOT_DEFINED",
          "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:P/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X",
          "exploitMaturity": "PROOF_OF_CONCEPT",
          "providerUrgency": "NOT_DEFINED",
          "userInteraction": "NONE",
          "attackComplexity": "LOW",
          "attackRequirements": "NONE",
          "privilegesRequired": "NONE",
          "subIntegrityImpact": "NONE",
          "vulnIntegrityImpact": "NONE",
          "integrityRequirement": "NOT_DEFINED",
          "modifiedAttackVector": "NOT_DEFINED",
          "subAvailabilityImpact": "NONE",
          "vulnAvailabilityImpact": "LOW",
          "availabilityRequirement": "NOT_DEFINED",
          "modifiedUserInteraction": "NOT_DEFINED",
          "modifiedAttackComplexity": "NOT_DEFINED",
          "subConfidentialityImpact": "NONE",
          "vulnConfidentialityImpact": "NONE",
          "confidentialityRequirement": "NOT_DEFINED",
          "modifiedAttackRequirements": "NOT_DEFINED",
          "modifiedPrivilegesRequired": "NOT_DEFINED",
          "modifiedSubIntegrityImpact": "NOT_DEFINED",
          "modifiedVulnIntegrityImpact": "NOT_DEFINED",
          "vulnerabilityResponseEffort": "NOT_DEFINED",
          "modifiedSubAvailabilityImpact": "NOT_DEFINED",
          "modifiedVulnAvailabilityImpact": "NOT_DEFINED",
          "modifiedSubConfidentialityImpact": "NOT_DEFINED",
          "modifiedVulnConfidentialityImpact": "NOT_DEFINED"
        }
      }
    ]
  },
  "affected": [
    {
      "source": "cna@vuldb.com",
      "affectedData": [
        {
          "vendor": "n/a",
          "modules": [
            "Markdown Mode"
          ],
          "product": "CodeMirror",
          "versions": [
            {
              "status": "affected",
              "version": "5.65.0"
            },
            {
              "status": "affected",
              "version": "5.65.1"
            },
            {
              "status": "affected",
              "version": "5.65.2"
            },
            {
              "status": "affected",
              "version": "5.65.3"
            },
            {
              "status": "affected",
              "version": "5.65.4"
            },
            {
              "status": "affected",
              "version": "5.65.5"
            },
            {
              "status": "affected",
              "version": "5.65.6"
            },
            {
              "status": "affected",
              "version": "5.65.7"
            },
            {
              "status": "affected",
              "version": "5.65.8"
            },
            {
              "status": "affected",
              "version": "5.65.9"
            },
            {
              "status": "affected",
              "version": "5.65.10"
            },
            {
              "status": "affected",
              "version": "5.65.11"
            },
            {
              "status": "affected",
              "version": "5.65.12"
            },
            {
              "status": "affected",
              "version": "5.65.13"
            },
            {
              "status": "affected",
              "version": "5.65.14"
            },
            {
              "status": "affected",
              "version": "5.65.15"
            },
            {
              "status": "affected",
              "version": "5.65.16"
            },
            {
              "status": "affected",
              "version": "5.65.17"
            },
            {
              "status": "affected",
              "version": "5.65.18"
            },
            {
              "status": "affected",
              "version": "5.65.19"
            },
            {
              "status": "affected",
              "version": "5.65.20"
            },
            {
              "status": "unaffected",
              "version": "6.0"
            }
          ]
        }
      ]
    }
  ],
  "published": "2025-06-22T22:15:22.430",
  "references": [
    {
      "url": "https://github.com/codemirror/codemirror5/issues/7128",
      "source": "cna@vuldb.com"
    },
    {
      "url": "https://vuldb.com/?ctiid.313610",
      "source": "cna@vuldb.com"
    },
    {
      "url": "https://vuldb.com/?id.313610",
      "source": "cna@vuldb.com"
    },
    {
      "url": "https://vuldb.com/?submit.598875",
      "source": "cna@vuldb.com"
    }
  ],
  "vulnStatus": "Deferred",
  "weaknesses": [
    {
      "type": "Secondary",
      "source": "cna@vuldb.com",
      "description": [
        {
          "lang": "en",
          "value": "CWE-400"
        },
        {
          "lang": "en",
          "value": "CWE-1333"
        }
      ]
    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "A weakness has been identified in CodeMirror up to 5.65.20. Affected is an unknown function of the file mode/markdown/markdown.js of the component Markdown Mode. This manipulation causes inefficient regular expression complexity. It is possible to initiate the attack remotely. The exploit has been made available to the public and could be exploited. Upgrading to version 6.0 is able to address this issue. You should upgrade the affected component. Not all code samples mentioned in the GitHub issue can be found. The repository mentions, that \"CodeMirror 6 exists, and is [...] much more actively maintained.\""
    },
    {
      "lang": "es",
      "value": "Se encontró una vulnerabilidad en CodeMirror hasta la versión 5.17.0 y se clasificó como problemática. Este problema afecta a una funcionalidad desconocida del archivo mode/markdown/markdown.js del componente Markdown Mode. La manipulación genera una complejidad ineficiente en las expresiones regulares. El ataque puede ejecutarse en remoto. Se ha hecho público el exploit y puede que sea utilizado. No se pueden encontrar todos los ejemplos de código mencionados en el problema de GitHub. El repositorio menciona que «CodeMirror 6 existe y se mantiene de forma mucho más activa»."
    }
  ],
  "lastModified": "2026-06-17T10:02:00.770",
  "sourceIdentifier": "cna@vuldb.com"
}