Versioned security assessment

Report ID: SA-8E670382

6/30/2026, 6:27:33 PM

pptx security assessment v2

Skill Security Certification Report

Audit History
Audit model: codex Historical report
Skill name
pptx
Version
v2
Maintainer
sickn33
Source
github.com/sickn33/antigravity-awesome-skills/tree/main/web-app/public/skills/pptx-official
Coverage
56 Files scanned · 26,504 Lines analyzed
Policy version
Unavailable

Highest confirmed finding severity

High

3 confirmed security findings require attention.

Installation context

Historical evidence

This report may not describe the currently installable artifact. Open the current Skill page for install guidance.

Open current Skill page

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

Static analysis produced many false positives from Markdown code formatting, OOXML schema vocabulary, namespace URLs, and color values. Human review did confirm high-impact archive extraction risks and legitimate external converters that process untrusted presentation files, so publication should wait for mitigation.

Report position

Historical report

Open audit history before using this report to install.

Audit attestation

Not attestable

The required immutable binding is incomplete.

Human verification

Not verified

No human verification is recorded for this report.

Coverage

56 Files scanned · 26,504 Lines analyzed

3 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

    Binding unavailable

  2. Artifact

    Identity incomplete

  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.

Observed in 3 evidence locations

Network access

May connect to external services.

Observed in 2 evidence locations

Filesystem access

May read or write local files.

Observed in 3 evidence locations

Env variables

May read values from the process environment.

Observed in 1 evidence location

External commands

May invoke commands or programs outside the Skill.

Observed in 3 evidence locations

Risk findings

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

Confirmed security concerns (3)

RISK-001 High
ooxml/scripts/unpack.py:17ooxml/scripts/validation/base.py:890-891ooxml/scripts/validation/docx.py:200-201ooxml/scripts/validation/redlining.py:69-70
Unsafe archive extraction of Office files
TRUE_POSITIVE: Multiple helpers call ZipFile.extractall on user-supplied Office archives. A crafted PPTX, DOCX, or XLSX could contain traversal entries that write outside the chosen output directory.
The code directly extracts archives supplied by the user without visible member path validation. This is a classic zip-slip risk and the affected files are part of the documented PPTX workflow.
RISK-002 Medium
ooxml/scripts/pack.py:103-116scripts/thumbnail.py:219-230scripts/thumbnail.py:237-240ooxml/scripts/validation/redlining.py:153-166
External document conversion commands
TRUE_POSITIVE with limited injection risk: The skill runs LibreOffice, Poppler, and git subprocesses on presentation or temporary files. Arguments are passed as arrays, but external parsers process untrusted documents.
The subprocess calls are real and operate on files derived from user workflows. No shell=True or string command construction was found in these representative calls, reducing command injection confidence.
RISK-003 Medium
SKILL.md:477-483
Privileged dependency installation commands in documentation
TRUE_POSITIVE as an operational risk: The skill documentation recommends sudo apt-get commands for LibreOffice and Poppler. This is expected setup guidance but requires elevated privileges if followed.
The sudo commands are present in documentation, not hidden executable code. They still create a real marketplace warning because users may run them during setup.

Expert evidence

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

Artifact subject

Marketplace commit
Unavailable
Content hash
Unavailable
Tree hash
Unavailable
Skill path
Unavailable
Audit payload hash
Unavailable

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.

Static false positives ignored (2)
Low
html2pptx.md:3scripts/html2pptx.js:263-269ooxml/scripts/validation/base.py:47-55ooxml/schemas/ISO-IEC29500-4_2016/dml-main.xsd:2723-2725
No malicious intent confirmed in scanner heuristics
FALSE_POSITIVE GROUP: The critical obfuscation, C2 keyword, weak cryptography, and many Ruby backtick findings are caused by Markdown formatting, OOXML schema names, color values, and namespace URLs. No prompt injection attempt or credential exfiltration intent was found in reviewed files.
Targeted review showed benign documentation, conversion helpers, XML schema metadata, and presentation formatting utilities. The scanner labels match substrings rather than malicious behavior in these examples.
Low
scripts/html2pptx.js:896-904ooxml/scripts/validation/base.py:70-103
Benign environment and namespace usage
FALSE_POSITIVE GROUP: The reviewed environment access selects a temporary directory, and the hardcoded URLs are OOXML namespace identifiers. These do not show secret access or outbound network behavior.
The process.env access is limited to TMPDIR fallback handling, and namespace URL constants are not fetched. No evidence found for credential exfiltration in the reviewed locations.

Verify and export

JSON report CITATION.cff SARIF 2.1.0 Signed installation manifest

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

Audit attestation: not_attestable