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Security audit

Evermemos

Security checks for vulnerabilities and agentic risk

Overview

This memory skill is purpose-aligned, but it can automatically send and persist conversation and profile data to a configurable EverMemOS server without clear user-control, retention, HTTPS, or authentication safeguards.

Install only if you are comfortable with an agent storing selected conversation content, preferences, and profile details in an EverMemOS server. Use a trusted HTTPS endpoint, require API authentication, disable or tightly review automatic memory capture, avoid storing secrets or regulated data, and ensure users can inspect and delete stored memories.

A.I.G

Vulnerability Patterns
  • Insecure Skill Coding PracticesFinds exploitable flaws such as hardcoded secrets or command injection
  • Skill Instruction HijackingAlters the agent's session goals or safety constraints when the skill loads
  • Agent Memory PoisoningWrites attacker-controlled rules into memory that affect later sessions
  • Remote Payload Retrieval and ExecutionFetches external code whose behavior can change after review
  • Embedded Malicious CodeShips malicious scripts inside the skill and executes them locally
Findings (2)

T09 · Insecure Skill Coding Practices

Warning
Location
SKILL.md:79
Finding

Automatic Transmission of Potentially Sensitive Conversation Data

Content
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Remediation
View remediation

T09 · Insecure Skill Coding Practices

Warning
Location
SKILL.md:60
Finding

Sensitive Memory Operations Do Not Enforce Secure Transport or Authentication

Content
View full analysis
Remediation
View remediation
`. 5. Fail closed when authentication is required but the key is absent. 6. Never place API keys in query strings or log them. 7. Configure connection and response timeouts for all requests. 8. Check HTTP status codes with `raise_for_status()` and handle invalid JSON safely. 9. Use trusted certificate verification and do not recommend disabling TLS validation. 10. Document server-side authorization, user isolation, key rotation, revocation, and rate limiting. 11. Add tests proving that remote HTTP URLs are rejected and authenticated HTTPS requests include the expected header. ]]>

SkillSpector

Vulnerability Patterns
  • Data ExfiltrationExternal Transmission, Env Variable Harvesting, File System Enumeration
  • Trigger AbuseOverly Broad Trigger, Shadow Command Trigger, Keyword Baiting Trigger
  • Prompt InjectionInstruction Override, Hidden Instructions, Exfiltration Commands
  • Privilege EscalationExcessive Permissions, Sudo/Root Execution, Credential Access
  • Supply ChainUnpinned Dependencies, External Script Fetching, Obfuscated Code
Findings (9)

Missing User Warnings

High
Category
Not specified by scanner
Confidence
98% confidence
Finding

The skill presents itself as a production memory integration but does not warn users that conversation content may be stored remotely on an EverMemOS server. In a memory skill, failure to disclose remote persistence and transmission undermines informed consent and creates substantial privacy and compliance risk.

Content

No source excerpt is available for this finding.

Missing User Warnings

High
Category
Not specified by scanner
Confidence
98% confidence
Finding

The document says the system will automatically record user profile information and preferences, but it gives no warning about the data impact of collecting this personal information. In this context, profiling and long-term storage are especially sensitive because they can accumulate behavioral and preference data over time without meaningful user awareness.

Content

No source excerpt is available for this finding.

External Transmission

Medium
Category
Data Exfiltration
Confidence
90% confidence
Finding

The curl example demonstrates sending message content directly to the EverMemOS API, including user-authored text and metadata. As documentation for a memory skill this is functional, but it normalizes remote transfer of conversational data without emphasizing secure transport, authentication, or user consent, which increases privacy risk in real deployments.

Content

Scanner excerpt · SKILL.md (reported line 42)May include surrounding context.

1. 基本存储 (单条消息)

bash
curl -X POST ${EVERMEMOS_URL}/api/v1/memories \
  -H "Content-Type: application/json" \
  -d '{
    "message_id": "msg_001",

External Transmission

Medium
Category
Data Exfiltration
Confidence
92% confidence
Finding

This code transmits memory content to an externally configured EverMemOS endpoint using requests.post, which can include user conversation data and identifiers. External transmission is expected for this skill, but it remains security-relevant because the endpoint is configurable, the default uses plain HTTP, and the example does not show authentication, consent checks, or data minimization.

Content

Scanner excerpt · SKILL.md (reported line 72)May include surrounding context.

md
"create_time": datetime.utcnow().isoformat() + "Z",
        "scene": "assistant"
    }
    resp = requests.post(f"{EVERMEMOS_URL}/api/v1/memories", json=data)
    return resp.json()

# 使用示例

Vague Triggers

Medium
Category
Not specified by scanner
Confidence
95% confidence
Finding

The trigger phrases include broad everyday expressions such as “之前说过...”, “保存这个”, and “我的偏好是...”, which can cause the memory skill to activate unexpectedly during normal conversation. In this skill’s context, unintended activation is risky because it can lead to storage or retrieval of user data without a clear, explicit request.

Content

No source excerpt is available for this finding.

Vague Triggers

Medium
Category
Not specified by scanner
Confidence
97% confidence
Finding

The automatic memory triggers are vague and include sensitive situations like self-introduction, task completion, and preference expression without clear limits on what may be stored. Because this skill sends conversation content to a long-term memory system, ambiguous auto-save rules can cause overcollection of personal data and retention of information the user did not intend to persist.

Content

No source excerpt is available for this finding.

External Transmission

Medium
Category
Data Exfiltration
Confidence
93% confidence
Finding

The store method sends conversation content and user identifiers to the configured memory server. In a long-term memory skill this is expected behavior, but it is still dangerous if used without strong endpoint validation, encryption, and clear user authorization because it can persist sensitive conversation data outside the immediate chat environment.

Content

Scanner excerpt · SKILL.md (reported line 182)May include surrounding context.

md
def store(self, content, sender="user"):
        """存储记忆"""
        return requests.post(
            f"{self.base_url}/api/v1/memories",
            json={
                "message_id": f"msg_{int(time.time()*1000)}",

External Transmission

Medium
Category
Data Exfiltration
Confidence
86% confidence
Finding

The recall method sends the user's query and identifier to the remote retrieval endpoint, exposing potentially sensitive search terms and linking them to a persistent profile. Although retrieval is core functionality, transmitting such queries externally without explicit disclosure and transport safeguards can leak sensitive interests or prior conversation context.

Content

Scanner excerpt · SKILL.md (reported line 196)May include surrounding context.

md
def recall(self, query, top_k=5):
        """检索记忆"""
        return requests.post(
            f"{self.base_url}/api/v1/memories/retrieve",
            json={
                "query": query,

Natural-Language Policy Violations

Low
Category
Not specified by scanner
Confidence
84% confidence
Finding

文件中的名称、描述和触发短语均以中文固定表达呈现，尤其触发条件仅列出中文短语，没有说明是否支持其他语言或允许用户选择语言。若组织要求避免未经选择地强制特定语言/地区，这种默认中文约束可能构成语言策略问题。

Content

No source excerpt is available for this finding.

Static analysis

No suspicious patterns detected.