T09 · Insecure Skill Coding Practices
- Location
SKILL.md:9- Finding
Plaintext Persistence of Sensitive Travel-Document Metadata
- Content
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- Remediation
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Security audit
Security checks for vulnerabilities and agentic risk
This travel assistant is coherent, but it stores sensitive travel-document and itinerary details in a persistent workspace file without clear confirmation, minimization, or deletion controls.
Install only if you are comfortable with the assistant keeping travel history, passport expiration, visa, insurance, and budget details in a workspace file. Before use, prefer adding a confirmation step for every memory update, avoid storing document numbers or full policy details, and make sure users can review, correct, and delete the saved travel file.
SKILL.md:9Plaintext Persistence of Sensitive Travel-Document Metadata
SKILL.md:9Unverified Conversation Data Is Automatically Written to Persistent Agent Memory
The manifest description includes very broad trigger terms such as travel, trip, flight, hotel, visa, passport, country, city, and destination, which can cause the skill to activate in many ordinary conversations. Overbroad routing increases the chance that users disclose sensitive travel plans or document details to this skill unintentionally, expanding data collection beyond clear user intent.
The README is written entirely in Russian, including the command phrases the user must use to invoke the skill. This imposes a specific language/locale on users without documenting that the skill is region-specific or offering an opt-in or alternative language choice.
The skill instructions and role definition are written entirely in Russian and specify a Russian-language tone without indicating that the assistant should adapt to the user's preferred language. This can violate language-choice policy because it implicitly constrains interaction to one language without opt-in or justification.
The skill instructs the assistant to update a long-term memory file when the user shares new travel information, but it provides no user-facing notice or consent flow for storing sensitive data. Because the file is explicitly meant to hold passports, visas, insurance, and trip history, this can lead to silent persistence of highly sensitive personal information.
The skill explicitly directs persistence of sensitive personal travel data, including document validity, visas, insurance, destinations, dates, and spending, into a long-term knowledge file. Such aggregation creates a rich profile of the user's identity, movements, and credentials, which raises privacy risk and potential downstream harm if accessed, reused, or exposed improperly.
No suspicious patterns detected.