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