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CVE-2026-41863

Status: AnalyzedMedium (6.5)—

Spring AI's support for Anthropic's Skills API used LLM-influenced filenames unsanitized in Path.resolve before writing files to disk. This could allow a malicious user to write files outside the intended target directory, including restricted directories.

Affected versions: Spring AI: 1.1.0 through 1.1.x

CVSS

Exploitation probability (EPSS)

EPSS (Exploit Prediction Scoring System, FIRST) estimates how likely a vulnerability is to be exploited in the wild within 30 days. It complements CVSS (impact) and CISA KEV (confirmed exploitation).

Affected technologies (1)

Vmware — Spring AI

CWEs

References

Raw JSON (NVD)

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{
  "id": "CVE-2026-41863",
  "cveTags": [],
  "metrics": {
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2026-41863",
          "role": "CISA Coordinator",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "partial"
            }
          ],
          "version": "2.0.3",
          "timestamp": "2026-05-26T14:19:04.863084Z"
        }
      }
    ],
    "cvssMetricV31": [
      {
        "type": "Secondary",
        "source": "security@vmware.com",
        "cvssData": {
          "scope": "UNCHANGED",
          "version": "3.1",
          "baseScore": 6.5,
          "attackVector": "NETWORK",
          "baseSeverity": "MEDIUM",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N",
          "integrityImpact": "HIGH",
          "userInteraction": "NONE",
          "attackComplexity": "LOW",
          "availabilityImpact": "NONE",
          "privilegesRequired": "LOW",
          "confidentialityImpact": "NONE"
        },
        "impactScore": 3.6,
        "exploitabilityScore": 2.8
      }
    ]
  },
  "affected": [
    {
      "source": "security@vmware.com",
      "affectedData": [
        {
          "vendor": "Spring",
          "product": "Spring AI",
          "versions": [
            {
              "status": "affected",
              "version": "1.1.0",
              "versionType": "custom",
              "lessThanOrEqual": "1.1.x"
            }
          ],
          "defaultStatus": "unaffected"
        }
      ]
    }
  ],
  "published": "2026-05-25T07:16:16.377",
  "references": [
    {
      "url": "https://spring.io/security/cve-2026-41863",
      "tags": [
        "Vendor Advisory"
      ],
      "source": "security@vmware.com"
    }
  ],
  "vulnStatus": "Analyzed",
  "weaknesses": [
    {
      "type": "Secondary",
      "source": "security@vmware.com",
      "description": [
        {
          "lang": "en",
          "value": "CWE-22"
        }
      ]
    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "Spring AI's support for Anthropic's Skills API used LLM-influenced filenames unsanitized in Path.resolve before writing files to disk. This could allow a malicious user to write files outside the intended target directory, including restricted directories.\n\nAffected versions:\nSpring AI: 1.1.0 through 1.1.x"
    },
    {
      "lang": "es",
      "value": "El soporte de Spring AI para la API de Habilidades de Anthropic utilizaba nombres de archivo influenciados por LLM sin sanear en Path.resolve antes de escribir archivos en el disco. Esto podría permitir a un usuario malintencionado escribir archivos fuera del directorio de destino previsto, incluyendo directorios restringidos.\n\nVersiones afectadas:\nSpring AI: 1.1.0 hasta 1.1.x"
    }
  ],
  "lastModified": "2026-07-23T17:10:00.123",
  "configurations": [
    {
      "nodes": [
        {
          "negate": false,
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:vmware:spring_ai:*:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "79B32FFF-1F8A-4904-BFC7-C41C07FFC575",
              "versionEndExcluding": "1.1.7",
              "versionStartIncluding": "1.1.0"
            }
          ],
          "operator": "OR"
        }
      ]
    }
  ],
  "sourceIdentifier": "security@vmware.com"
}