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Plastic Labs Honcho through 3.3.0 Incorrect Authorization via POST /v3/workspaces

Type: advisorySource: Official CVE List1 source record

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.

Announced Source revision 1
Original source ↗

CVE-2026-108711

Primary source · Revision 1

Imported from structured advisory data. Source references identify upstream records or fields; verify affected versions and your deployed configuration.

Security context

Source reference: cve:CVE-2026-108711

honcho

Source reference: /containers/cna/affected/0/product

Affected versions
Not stated in this record
Fixed versions
Not stated in this record
Prerequisites
Not stated in this record

Structured affected-version data

Original package identities and version rules from this source.

[
  {
    "repo": "https://github.com/plastic-labs/honcho",
    "vendor": "Plastic Labs",
    "product": "honcho",
    "versions": [
      {
        "status": "affected",
        "version": "0",
        "versionType": "semver",
        "lessThanOrEqual": "3.3.0"
      }
    ],
    "packageURL": "pkg:github/plastic-labs/honcho",
    "defaultStatus": "unaffected"
  }
]
Related CVEs
CVE-2026-108711

Source reference: /cveMetadata/cveId

Publisher severity

medium

Source reference: /containers/cna/metrics

Event
#20516 · Revision 1
Added to Heist Feed
Publisher date
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