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    2 vulnerabilities by Plastic Labs

    CVE-2026-108711 (GCVE-0-2026-108711)

    Vulnerability from nvd – Published: 2026-10-11 12:19 – Updated: 2026-10-11 12:19
    VLAI
    Title
    Plastic Labs Honcho through 3.3.0 Incorrect Authorization via POST /v3/workspaces
    Summary
    Plastic Labs Honcho through 3.3.0 contains an incorrect authorization vulnerability that allows peer- or session-scoped API key holders to read workspace data because get_or_create_workspace checks only the workspace claim. Attackers can submit their parent workspace name to the POST /v3/workspaces endpoint to retrieve workspace metadata and configuration, including custom_instructions, reserved for workspace or admin keys.
    Severity
    5.3 (Medium)
    CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N
    4.3 (Medium)
    CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N
    CWE
    • CWE-863 - Incorrect Authorization
    Assigner
    VulnCheck CNA under the mitre root
    CNA scorecard B 84/100 over 5499 records in the last 180 days details
    References
    Impacted products
    Vendor Product Version
    Plastic Labs honcho Affected: 0 , ≤ 3.3.0 (semver)
    		Create a notification for this product.
    Date Public
    2026-10-10 00:00
    Credits
    HaiND from the Post and Telecommunication Institute of Technology
    Show details on NVD website
    To clipboard 

    {
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "packageURL": "pkg:github/plastic-labs/honcho",
          "product": "honcho",
          "repo": "https://github.com/plastic-labs/honcho",
          "vendor": "Plastic Labs",
          "versions": [
            {
              "lessThanOrEqual": "3.3.0",
              "status": "affected",
              "version": "0",
              "versionType": "semver"
            }
          ]
        }
      ],
      "credits": [
        {
          "lang": "en",
          "type": "finder",
          "value": "HaiND from the Post and Telecommunication Institute of Technology"
        }
      ],
      "datePublic": "2026-10-10T00:00:00.000Z",
      "descriptions": [
        {
          "lang": "en",
          "value": "Plastic Labs Honcho through 3.3.0 contains an incorrect authorization vulnerability that allows peer- or session-scoped API key holders to read workspace data because get_or_create_workspace checks only the workspace claim. Attackers can submit their parent workspace name to the POST /v3/workspaces endpoint to retrieve workspace metadata and configuration, including custom_instructions, reserved for workspace or admin keys."
        }
      ],
      "metrics": [
        {
          "cvssV4_0": {
            "attackComplexity": "LOW",
            "attackRequirements": "NONE",
            "attackVector": "NETWORK",
            "baseScore": 5.3,
            "baseSeverity": "MEDIUM",
            "privilegesRequired": "LOW",
            "subAvailabilityImpact": "NONE",
            "subConfidentialityImpact": "NONE",
            "subIntegrityImpact": "NONE",
            "userInteraction": "NONE",
            "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N",
            "version": "4.0",
            "vulnAvailabilityImpact": "NONE",
            "vulnConfidentialityImpact": "LOW",
            "vulnIntegrityImpact": "NONE"
          },
          "format": "CVSS"
        },
        {
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            "attackVector": "NETWORK",
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            "confidentialityImpact": "LOW",
            "integrityImpact": "NONE",
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            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N",
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          },
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      ],
      "problemTypes": [
        {
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            {
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              "description": "Incorrect Authorization",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-10-11T12:19:25.400Z",
        "orgId": "83251b91-4cc7-4094-a5c7-464a1b83ea10",
        "shortName": "VulnCheck"
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        {
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          "url": "https://hackmd.io/@haind/honcho-scoped-jwt-workspace-config-disclosure"
        },
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          "url": "https://github.com/plastic-labs/honcho/blob/608aec8a928da13c540262ed980c569448fb53ab/src/routers/workspaces.py#L41-L72"
        },
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        },
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        },
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          "url": "https://github.com/plastic-labs/honcho"
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        {
          "name": "VulnCheck Advisory: Plastic Labs Honcho through 3.3.0 Incorrect Authorization via POST /v3/workspaces",
          "tags": [
            "third-party-advisory"
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          "url": "https://www.vulncheck.com/advisories/plastic-labs-honcho-through-3.3.0-incorrect-authorization-via-post-v3-workspaces"
        }
      ],
      "title": "Plastic Labs Honcho through 3.3.0 Incorrect Authorization via POST /v3/workspaces",
      "x_generator": {
        "engine": "vulncheck-endgame"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "83251b91-4cc7-4094-a5c7-464a1b83ea10",
    "assignerShortName": "VulnCheck",
    "cveId": "CVE-2026-108711",
    "datePublished": "2026-10-11T12:19:25.400Z",
    "dateReserved": "2026-10-11T01:51:09.941Z",
    "dateUpdated": "2026-10-11T12:19:25.400Z",
    "state": "PUBLISHED"
  },
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}

    CVE-2026-108711 (GCVE-0-2026-108711)

    Vulnerability from cvelistv5 – Published: 2026-10-11 12:19 – Updated: 2026-10-11 12:19
    VLAI
    Title
    Plastic Labs Honcho through 3.3.0 Incorrect Authorization via POST /v3/workspaces
    Summary
    Plastic Labs Honcho through 3.3.0 contains an incorrect authorization vulnerability that allows peer- or session-scoped API key holders to read workspace data because get_or_create_workspace checks only the workspace claim. Attackers can submit their parent workspace name to the POST /v3/workspaces endpoint to retrieve workspace metadata and configuration, including custom_instructions, reserved for workspace or admin keys.
    Severity
    5.3 (Medium)
    CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N
    4.3 (Medium)
    CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N
    CWE
    • CWE-863 - Incorrect Authorization
    Assigner
    VulnCheck CNA under the mitre root
    CNA scorecard B 84/100 over 5499 records in the last 180 days details
    References
    Impacted products
    Vendor Product Version
    Plastic Labs honcho Affected: 0 , ≤ 3.3.0 (semver)
    		Create a notification for this product.
    Date Public
    2026-10-10 00:00
    Credits
    HaiND from the Post and Telecommunication Institute of Technology
    Show details on NVD website
    To clipboard 

    {
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "packageURL": "pkg:github/plastic-labs/honcho",
          "product": "honcho",
          "repo": "https://github.com/plastic-labs/honcho",
          "vendor": "Plastic Labs",
          "versions": [
            {
              "lessThanOrEqual": "3.3.0",
              "status": "affected",
              "version": "0",
              "versionType": "semver"
            }
          ]
        }
      ],
      "credits": [
        {
          "lang": "en",
          "type": "finder",
          "value": "HaiND from the Post and Telecommunication Institute of Technology"
        }
      ],
      "datePublic": "2026-10-10T00:00:00.000Z",
      "descriptions": [
        {
          "lang": "en",
          "value": "Plastic Labs Honcho through 3.3.0 contains an incorrect authorization vulnerability that allows peer- or session-scoped API key holders to read workspace data because get_or_create_workspace checks only the workspace claim. Attackers can submit their parent workspace name to the POST /v3/workspaces endpoint to retrieve workspace metadata and configuration, including custom_instructions, reserved for workspace or admin keys."
        }
      ],
      "metrics": [
        {
          "cvssV4_0": {
            "attackComplexity": "LOW",
            "attackRequirements": "NONE",
            "attackVector": "NETWORK",
            "baseScore": 5.3,
            "baseSeverity": "MEDIUM",
            "privilegesRequired": "LOW",
            "subAvailabilityImpact": "NONE",
            "subConfidentialityImpact": "NONE",
            "subIntegrityImpact": "NONE",
            "userInteraction": "NONE",
            "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N",
            "version": "4.0",
            "vulnAvailabilityImpact": "NONE",
            "vulnConfidentialityImpact": "LOW",
            "vulnIntegrityImpact": "NONE"
          },
          "format": "CVSS"
        },
        {
          "cvssV3_1": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
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            "baseSeverity": "MEDIUM",
            "confidentialityImpact": "LOW",
            "integrityImpact": "NONE",
            "privilegesRequired": "LOW",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N",
            "version": "3.1"
          },
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        }
      ],
      "problemTypes": [
        {
          "descriptions": [
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              "description": "Incorrect Authorization",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-10-11T12:19:25.400Z",
        "orgId": "83251b91-4cc7-4094-a5c7-464a1b83ea10",
        "shortName": "VulnCheck"
      },
      "references": [
        {
          "tags": [
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          ],
          "url": "https://hackmd.io/@haind/honcho-scoped-jwt-workspace-config-disclosure"
        },
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          ],
          "url": "https://github.com/plastic-labs/honcho/blob/608aec8a928da13c540262ed980c569448fb53ab/src/routers/workspaces.py#L41-L72"
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          "tags": [
            "third-party-advisory"
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      ],
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      }
    }
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    "assignerShortName": "VulnCheck",
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