FKIE_CVE-2026-6968

Vulnerability from fkie_nvd - Published: 2026-04-24 20:16 - Updated: 2026-06-17 11:01
Severity
5.9 (Medium) - CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:H/A:L
6.5 (Medium) - CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N
Summary
Incomplete path traversal fixes in awslabs/tough before tough-v0.22.0 allow remote authenticated users with delegated signing authority to write files outside intended output directories via absolute target names in copy_target/link_target, symlinked parent directories in save_target, or symlinked metadata filenames in SignedRole::write, because write paths trust the joined destination path without post-resolution containment verification. We recommend you upgrade to tough-v0.22.0 / tuftool-v0.15.0.
References
ff89ba41-3aa1-4d27-914a-91399e9639e5https://aws.amazon.com/security/security-bulletins/2026-019-aws/Vendor Advisory
ff89ba41-3aa1-4d27-914a-91399e9639e5https://crates.io/crates/tough/0.22.0Product
ff89ba41-3aa1-4d27-914a-91399e9639e5https://crates.io/crates/tuftool/0.15.0Product
ff89ba41-3aa1-4d27-914a-91399e9639e5https://github.com/awslabs/tough/releases/tag/tough-v0.22.0Release Notes
ff89ba41-3aa1-4d27-914a-91399e9639e5https://github.com/awslabs/tough/releases/tag/tuftool-v0.15.0Release Notes
ff89ba41-3aa1-4d27-914a-91399e9639e5https://github.com/awslabs/tough/security/advisories/GHSA-v57p-gppj-p9vgVendor Advisory
Impacted products
Vendor Product Version
amazon tough *
amazon tuftool *
To clipboard 

{
  "affected": [
    {
      "affectedData": [
        {
          "defaultStatus": "unaffected",
          "product": "tough",
          "vendor": "AWS",
          "versions": [
            {
              "status": "unaffected",
              "version": "0.22.0"
            }
          ]
        },
        {
          "defaultStatus": "unaffected",
          "product": "tuftool",
          "vendor": "AWS",
          "versions": [
            {
              "status": "unaffected",
              "version": "0.15.0"
            }
          ]
        }
      ],
      "source": "ff89ba41-3aa1-4d27-914a-91399e9639e5"
    }
  ],
  "configurations": [
    {
      "nodes": [
        {
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:amazon:tough:*:*:*:*:*:rust:*:*",
              "matchCriteriaId": "51AC1B2A-ACBA-4ABE-9A31-1132436EEF0F",
              "versionEndExcluding": "0.22.0",
              "versionStartIncluding": "0.9.0",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:a:amazon:tuftool:*:*:*:*:*:rust:*:*",
              "matchCriteriaId": "E83215AA-4B4B-44C1-A062-B7212CF33EF5",
              "versionEndExcluding": "0.15.0",
              "vulnerable": true
            }
          ],
          "negate": false,
          "operator": "OR"
        }
      ]
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "Incomplete path traversal fixes in awslabs/tough before tough-v0.22.0 allow remote authenticated users with delegated signing authority to write files outside intended output directories via absolute target names in copy_target/link_target, symlinked parent directories in save_target, or symlinked metadata filenames in SignedRole::write, because write paths trust the joined destination path without post-resolution containment verification.\n\nWe recommend you upgrade to tough-v0.22.0 / tuftool-v0.15.0."
    }
  ],
  "id": "CVE-2026-6968",
  "lastModified": "2026-06-17T11:01:34.010",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "HIGH",
          "attackVector": "NETWORK",
          "availabilityImpact": "LOW",
          "baseScore": 5.9,
          "baseSeverity": "MEDIUM",
          "confidentialityImpact": "NONE",
          "integrityImpact": "HIGH",
          "privilegesRequired": "LOW",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:H/A:L",
          "version": "3.1"
        },
        "exploitabilityScore": 1.6,
        "impactScore": 4.2,
        "source": "ff89ba41-3aa1-4d27-914a-91399e9639e5",
        "type": "Secondary"
      },
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "NETWORK",
          "availabilityImpact": "NONE",
          "baseScore": 6.5,
          "baseSeverity": "MEDIUM",
          "confidentialityImpact": "NONE",
          "integrityImpact": "HIGH",
          "privilegesRequired": "LOW",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N",
          "version": "3.1"
        },
        "exploitabilityScore": 2.8,
        "impactScore": 3.6,
        "source": "nvd@nist.gov",
        "type": "Primary"
      }
    ],
    "cvssMetricV40": [
      {
        "cvssData": {
          "Automatable": "NOT_DEFINED",
          "Recovery": "NOT_DEFINED",
          "Safety": "NOT_DEFINED",
          "attackComplexity": "HIGH",
          "attackRequirements": "PRESENT",
          "attackVector": "NETWORK",
          "availabilityRequirement": "NOT_DEFINED",
          "baseScore": 7.1,
          "baseSeverity": "HIGH",
          "confidentialityRequirement": "NOT_DEFINED",
          "exploitMaturity": "NOT_DEFINED",
          "integrityRequirement": "NOT_DEFINED",
          "modifiedAttackComplexity": "NOT_DEFINED",
          "modifiedAttackRequirements": "NOT_DEFINED",
          "modifiedAttackVector": "NOT_DEFINED",
          "modifiedPrivilegesRequired": "NOT_DEFINED",
          "modifiedSubAvailabilityImpact": "NOT_DEFINED",
          "modifiedSubConfidentialityImpact": "NOT_DEFINED",
          "modifiedSubIntegrityImpact": "NOT_DEFINED",
          "modifiedUserInteraction": "NOT_DEFINED",
          "modifiedVulnAvailabilityImpact": "NOT_DEFINED",
          "modifiedVulnConfidentialityImpact": "NOT_DEFINED",
          "modifiedVulnIntegrityImpact": "NOT_DEFINED",
          "privilegesRequired": "LOW",
          "providerUrgency": "NOT_DEFINED",
          "subAvailabilityImpact": "LOW",
          "subConfidentialityImpact": "NONE",
          "subIntegrityImpact": "HIGH",
          "userInteraction": "NONE",
          "valueDensity": "NOT_DEFINED",
          "vectorString": "CVSS:4.0/AV:N/AC:H/AT:P/PR:L/UI:N/VC:N/VI:H/VA:N/SC:N/SI:H/SA:L/E:X/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",
          "version": "4.0",
          "vulnAvailabilityImpact": "NONE",
          "vulnConfidentialityImpact": "NONE",
          "vulnIntegrityImpact": "HIGH",
          "vulnerabilityResponseEffort": "NOT_DEFINED"
        },
        "source": "ff89ba41-3aa1-4d27-914a-91399e9639e5",
        "type": "Secondary"
      }
    ],
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2026-6968",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "partial"
            }
          ],
          "role": "CISA Coordinator",
          "timestamp": "2026-04-24T20:09:33.745527Z",
          "version": "2.0.3"
        }
      }
    ]
  },
  "published": "2026-04-24T20:16:29.170",
  "references": [
    {
      "source": "ff89ba41-3aa1-4d27-914a-91399e9639e5",
      "tags": [
        "Vendor Advisory"
      ],
      "url": "https://aws.amazon.com/security/security-bulletins/2026-019-aws/"
    },
    {
      "source": "ff89ba41-3aa1-4d27-914a-91399e9639e5",
      "tags": [
        "Product"
      ],
      "url": "https://crates.io/crates/tough/0.22.0"
    },
    {
      "source": "ff89ba41-3aa1-4d27-914a-91399e9639e5",
      "tags": [
        "Product"
      ],
      "url": "https://crates.io/crates/tuftool/0.15.0"
    },
    {
      "source": "ff89ba41-3aa1-4d27-914a-91399e9639e5",
      "tags": [
        "Release Notes"
      ],
      "url": "https://github.com/awslabs/tough/releases/tag/tough-v0.22.0"
    },
    {
      "source": "ff89ba41-3aa1-4d27-914a-91399e9639e5",
      "tags": [
        "Release Notes"
      ],
      "url": "https://github.com/awslabs/tough/releases/tag/tuftool-v0.15.0"
    },
    {
      "source": "ff89ba41-3aa1-4d27-914a-91399e9639e5",
      "tags": [
        "Vendor Advisory"
      ],
      "url": "https://github.com/awslabs/tough/security/advisories/GHSA-v57p-gppj-p9vg"
    }
  ],
  "sourceIdentifier": "ff89ba41-3aa1-4d27-914a-91399e9639e5",
  "vulnStatus": "Analyzed",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-22"
        }
      ],
      "source": "ff89ba41-3aa1-4d27-914a-91399e9639e5",
      "type": "Secondary"
    }
  ]
}



Log in or create an account to share your comment.




Tags
Taxonomy of the tags.





Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

Author Source Type Date Other

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.



Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.