CVE-2026-48129 (GCVE-0-2026-48129)

Vulnerability from cvelistv5 – Published: 2026-06-19 20:16 – Updated: 2026-06-19 20:16
VLAI
Title
Kestra task inputFiles accepts traversal filenames for worker file writes
Summary
Kestra is an open-source, event-driven orchestration platform. Prior to versions 1.3.19, 1.2.19, 1.1.19, and 1.0.43, Kestra task `inputFiles` writes rendered file names directly under the task working directory. When a flow forwards untrusted execution or webhook data into an `inputFiles` file name, a caller can use `../` path segments to create or overwrite files outside that task working directory on the worker filesystem. Versions 1.3.19, 1.2.19, 1.1.19, and 1.0.43 patch the issue.
Severity
6.5 (Medium)
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:L
CWE
  • CWE-22 - Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
Assigner
References
Impacted products
Vendor Product Version
kestra-io kestra Affected: < 1.0.43
Affected: >= 1.1.0, < 1.1.19
Affected: >= 1.2.0, < 1.2.19
Affected: >= 1.3.0, < 1.3.19
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          "product": "kestra",
          "vendor": "kestra-io",
          "versions": [
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              "version": "\u003e= 1.2.0, \u003c 1.2.19"
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        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "attackComplexity": "HIGH",
            "attackVector": "NETWORK",
            "availabilityImpact": "LOW",
            "baseScore": 6.5,
            "baseSeverity": "MEDIUM",
            "confidentialityImpact": "NONE",
            "integrityImpact": "HIGH",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:L",
            "version": "3.1"
          }
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      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-22",
              "description": "CWE-22: Improper Limitation of a Pathname to a Restricted Directory (\u0027Path Traversal\u0027)",
              "lang": "en",
              "type": "CWE"
            }
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      "providerMetadata": {
        "dateUpdated": "2026-06-19T20:16:24.043Z",
        "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
        "shortName": "GitHub_M"
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          "url": "https://github.com/kestra-io/kestra/security/advisories/GHSA-q3fw-mvgv-pjr2"
        }
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      "source": {
        "advisory": "GHSA-q3fw-mvgv-pjr2",
        "discovery": "UNKNOWN"
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      "title": "Kestra task inputFiles accepts traversal filenames for worker file writes"
    }
  },
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    "cveId": "CVE-2026-48129",
    "datePublished": "2026-06-19T20:16:24.043Z",
    "dateReserved": "2026-05-20T18:46:58.292Z",
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    "state": "PUBLISHED"
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      "date": "2026-06-14",
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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.


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