FKIE_CVE-2026-103088

Vulnerability from fkie_nvd - Published: 2026-09-30 02:16 - Updated: 2026-09-30 18:18
Severity
7.5 (High) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Summary
Handlebars.java before 4.5.5 allows directory traversal. In handlebars-springmvc 4.5.3 and 4.5.4, the path-containment fix for CVE-2026-63490 validates template locations as raw percent-encoded strings, whereas the template file is opened through a URL handler that percent-decodes the path. In a Spring MVC application with a file: template prefix and a request-derived view name, a percent-encoded traversal such as %2e%2e/ bypasses both the view-resolver check and the loader-side containment and reads files outside the configured template base directory.
References
cve@mitre.orghttps://github.com/jknack/handlebars.java/commit/f6ae3979917d05bef07f00befb4013ef00503660
cve@mitre.orghttps://github.com/jknack/handlebars.java/releases/tag/v4.5.5
cve@mitre.orghttps://github.com/jknack/handlebars.java/security/advisories/GHSA-pvrx-3g7m-fpgv
134c704f-9b21-4f2e-91b3-4a467353bcc0https://github.com/jknack/handlebars.java/security/advisories/GHSA-pvrx-3g7m-fpgv
Impacted products
Vendor Product Version
To clipboard 

{
  "affected": [
    {
      "affectedData": [
        {
          "defaultStatus": "unaffected",
          "packageURL": "pkg:maven/com.github.jknack/handlebars-springmvc",
          "product": "handlebars.java",
          "repo": "https://github.com/jknack/handlebars.java",
          "vendor": "jknack",
          "versions": [
            {
              "lessThan": "4.5.5",
              "status": "affected",
              "version": "4.5.3",
              "versionType": "maven"
            }
          ]
        }
      ],
      "source": "cve@mitre.org"
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "Handlebars.java before 4.5.5 allows directory traversal. In handlebars-springmvc 4.5.3 and 4.5.4, the path-containment fix for CVE-2026-63490 validates template locations as raw percent-encoded strings, whereas the template file is opened through a URL handler that percent-decodes the path. In a Spring MVC application with a file: template prefix and a request-derived view name, a percent-encoded traversal such as %2e%2e/ bypasses both the view-resolver check and the loader-side containment and reads files outside the configured template base directory."
    }
  ],
  "id": "CVE-2026-103088",
  "lastModified": "2026-09-30T18:18:15.493",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "NETWORK",
          "availabilityImpact": "NONE",
          "baseScore": 7.5,
          "baseSeverity": "HIGH",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "NONE",
          "privilegesRequired": "NONE",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N",
          "version": "3.1"
        },
        "exploitabilityScore": 3.9,
        "impactScore": 3.6,
        "source": "cve@mitre.org",
        "type": "Secondary"
      }
    ],
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2026-103088",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "yes"
            },
            {
              "technicalImpact": "partial"
            }
          ],
          "role": "CISA Coordinator",
          "timestamp": "2026-09-30T17:13:35.282546Z",
          "version": "2.0.3"
        }
      }
    ]
  },
  "published": "2026-09-30T02:16:57.203",
  "references": [
    {
      "source": "cve@mitre.org",
      "url": "https://github.com/jknack/handlebars.java/commit/f6ae3979917d05bef07f00befb4013ef00503660"
    },
    {
      "source": "cve@mitre.org",
      "url": "https://github.com/jknack/handlebars.java/releases/tag/v4.5.5"
    },
    {
      "source": "cve@mitre.org",
      "url": "https://github.com/jknack/handlebars.java/security/advisories/GHSA-pvrx-3g7m-fpgv"
    },
    {
      "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
      "url": "https://github.com/jknack/handlebars.java/security/advisories/GHSA-pvrx-3g7m-fpgv"
    }
  ],
  "sourceIdentifier": "cve@mitre.org",
  "vulnStatus": "Deferred",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-24"
        }
      ],
      "source": "cve@mitre.org",
      "type": "Secondary"
    }
  ]
}



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