Vulnerability in Plastic Labs honcho

[ Description ]Official description

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.

[ Fixes ]Fixes and patches

No fix or interim patch is linked from our sources yet. Check the vendor references below and limit exposure of affected systems until a fix is available.

[ References ]References

• github.com/plastic-labs/honcho
• github.com/plastic-labs/honcho/blob/608aec8a928da13c540262ed980c569448fb53ab/src/crud/w…
• github.com/plastic-labs/honcho/blob/608aec8a928da13c540262ed980c569448fb53ab/src/router…
• github.com/plastic-labs/honcho/blob/608aec8a928da13c540262ed980c569448fb53ab/src/securi…
• hackmd.io/@haind/honcho-scoped-jwt-workspace-config-disclosure
• www.vulncheck.com/advisories/plastic-labs-honcho-through-3.3.0-incorrect-authorization-…