Versioned security assessment

Report ID: SA-A39A9171

7/23/2026, 12:59:43 PM

email-notify security assessment v9

Skill Security Certification Report

Audit History
Scanner version 3.0.0 Audit model: codex Latest published report
Skill name
email-notify
Version
v9
Maintainer
caopulan
Source
github.com/caopulan/Notification-Skill/tree/main/email-notify
Coverage
2 Files scanned · 282 Lines analyzed
Policy version
skillstore-security-audit-policy-v1

Highest confirmed finding severity

High

1 confirmed security finding requires attention.

Installation context

Check the current Skill page

This page summarizes report evidence only. The Skill page provides the canonical install advisory.

Open current Skill page

This report does not block or authorize the manifest or ZIP.

Most static alerts are false positives caused by Markdown formatting, local validation, and scoped configuration reads. Confirmed risks include shell-profile credential storage, optional unencrypted SMTP authentication, environment access to the SMTP password, and intended outbound SMTP connections.

Report position

Latest published report

Latest refers to the report sequence, not to artifact currentness.

Audit attestation

Active attestation

A public attestation is available for this exact report.

Human verification

Not verified

No human verification is recorded for this report.

Coverage

2 Files scanned · 282 Lines analyzed

10 items shown for review

Limitations

This report does not claim runtime or sandbox execution and does not prove the absence of side effects.

Evidence chain

Follow the evidence from source binding to the install contract. Available evidence supports verification; it is not a safety guarantee.

  1. Source

    Commit and path bound

  2. Artifact

    Content and tree hashes bound

  3. Audit

    Complete

  4. Install contract

    Open manifest to verify

    Open manifest

Capabilities observed

Observed means this report recorded supporting evidence. Not recorded does not prove that a capability is absent.

Contains scripts

May execute code included with the Skill.

Not recorded by this audit

Network access

May connect to external services.

Observed in 33 evidence locations

Filesystem access

May read or write local files.

Observed in 2 evidence locations

Env variables

May read values from the process environment.

Observed in 8 evidence locations

External commands

May invoke commands or programs outside the Skill.

Observed in 12 evidence locations

Capability review items (9)
High
scripts/send_email_notification.py:201
Email sending capability
client.login(smtp_user, smtp_password)
This transmits the configured SMTP username and password to the server. The credentials can cross an unencrypted connection when both transport-security options are disabled.
High
SKILL.md:16
Hidden file in home directory
Add the following lines to `~/.bashrc` (Linux) or `~/.zshrc` (macOS):
The setup directs users to persist the SMTP password in a shell startup file. This exposes the credential to every child process and leaves it in a long-lived plaintext file.
High
SKILL.md:16
Hidden file access
Add the following lines to `~/.bashrc` (Linux) or `~/.zshrc` (macOS):
The documented edit places SMTP credentials in .bashrc or .zshrc. Persisting secrets in shell profiles broadens credential exposure beyond this skill.
Medium
scripts/send_email_notification.py:190
Email sending capability
client: smtplib.SMTP = smtplib.SMTP_SSL(
This creates an outbound SSL SMTP connection to the configured host. The connection is intended, but it is a real network and data-egress capability.
Medium
scripts/send_email_notification.py:191
Email sending capability
smtp_host, smtp_port, timeout=args.timeout
This supplies the configured host and port to the SSL SMTP client. It is part of the real outbound connection path.
Medium
scripts/send_email_notification.py:194
Email sending capability
client = smtplib.SMTP(smtp_host, smtp_port, timeout=args.timeout)
This creates a plain SMTP connection before optional STARTTLS. It enables outbound traffic and can remain unencrypted when TLS is disabled.
Medium
scripts/send_email_notification.py:190
Python email libraries
client: smtplib.SMTP = smtplib.SMTP_SSL(
This uses the Python SMTP library to create an outbound SSL connection. It is an actual network operation rather than a library reference.
Medium
scripts/send_email_notification.py:194
Python email libraries
client = smtplib.SMTP(smtp_host, smtp_port, timeout=args.timeout)
This uses the Python SMTP library to open a network connection. STARTTLS is optional, so this path can remain unencrypted.
Low
scripts/send_email_notification.py:106
Python environment access
smtp_password = os.environ.get("CODEX_EMAIL_PASSWORD")
This reads a password from the process environment. The access is expected for SMTP authentication, but it gives the skill direct access to a credential.

Risk findings

Confirmed security concerns are separated from items that still need review.

Confirmed security concerns (1)

RISK-001 High
scripts/send_email_notification.py:194-201
Authenticated SMTP Can Run Without Encryption
When both TLS options are disabled, the plain SMTP path still calls login. Network observers could capture SMTP credentials and notification content.
The plain SMTP client is created on line 194, while STARTTLS is conditional and login remains available. The control flow directly confirms the exposure condition.

Remediation

Suggested fixes recorded by this audit. Applying them is the maintainer’s responsibility.

  1. FIX-001
    High
    The setup stores the SMTP password in .bashrc or .zshrc.
    Use a credential manager or an invocation-scoped secret source. Do not export the password from a general shell startup file.
  2. FIX-002
    High
    Authenticated SMTP is allowed when both SSL and STARTTLS are disabled.
    Reject authenticated connections unless SSL or STARTTLS is enabled. Permit plaintext SMTP only for unauthenticated, explicitly approved local relays.
  3. FIX-003
    Medium
    Notifications can include sensitive task summaries and project metadata.
    Require a dry-run before first use, document the transmitted fields, and keep secrets out of task titles and summaries.

Expert evidence

Immutable subject identity, scanner metadata, dismissed matches, and source-level evidence.

Artifact subject

Marketplace commit
a39a91716eadede5f4cdefd78178fed4e837a128
Content hash
a80a99e48c02163a9ba11068e8f1fc062e56bf04ff4adaff4a843740004276ea
Tree hash
7de180c241fb2edac9021331deb39d7538fd02536cf439a20cc7a9aafd2a54db
Skill path
skills/caopulan/email-notify
Audit payload hash
6c21c5259caf37bf0a8f41bba857328c

Analysis metadata

Audit model: codex

Analysis state: Complete

Scope is limited to the recorded files, lines, methods, and evidence. No runtime or sandbox execution is claimed.

Verify and export

JSON report Signed attestation CITATION.cff SARIF 2.1.0 Signed installation manifest Source

The manifest and lockfile bind install artifacts to cryptographic hashes. This integrity claim is separate from the security assessment.

Audit attestation: active