file-upload SKILL.md skillA
file-upload from hellodqy/mastermind-bug-bounty is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.
mdr add hellodqy/mastermind-bug-bounty/file-upload@git:20260914.819e838Pins git:20260914.819e838 in mdr.lock. Pin the fingerprint instead.
- Audit grade
- A, 17 of 17 checks passed
- Kind
- SKILL.md skill
- Repository
- hellodqy/mastermind-bug-bounty
- Path
skills/file_upload/SKILL.md- Versions recorded
- 1
- Latest version
- git:20260914.819e838, committed Sep 14, 2026
- Size
- 1,366 bytes
- Repository stars
- 14
- License
- none declared
Analyze upload, conversion, preview, archive, and storage pipelines when file content or metadata may cross execution, parsing, or authorization boundaries.
Collected from public GitHub. Every version is saved exactly as it was and never changes. Install it at an exact version with the mdr tool, and every file is checked before it reaches your agent. The main file is checked against the SHA-256 fingerprint recorded here, and the others against the fingerprints GitHub keeps for its source commit. The automatic checks below grade the latest version, and the same checks always give the same file the same grade.
What the file says
# File Upload ## Goal 跟踪文件从接收、校验、存储到解析和分发的完整生命周期，验证内容、元数据或访问控制是否造成实际影响。 ## Tools / Inputs - 上传入口、允许类型、响应 URL、对象存储、预览/转换任务、下载权限 - 资源索引：`references/INDEX.md`；候选资源：`file-upload-testing.md`、`path-traversal-lfi-testing.md` ## Constraints 1. 只上传无害标记文件，不部署持久化后门。 2. 分别判断扩展名、MIME、magic bytes 和实际解析器。 3. 不把“上传成功”单独当漏洞，必须证明执行、解析、覆盖或越权访问。 4. 压缩包测试限制大小、层级和文件数量。 5. 使用自建对象验证覆盖、下载和删除边界。 ## Chain Questions - 文件最终存在哪里，由谁解析，使用哪个域名和 Content-Type 返回？ - 校验与实际解析是否基于不同信息？ - 文件名、路径、压缩条目或元数据能否越过目录/租户边界？ - 上传结果能否连接到 XSS、XXE、路径穿越、凭据泄露或代码执行？
Read the whole file at its exact version.
How to install
mdr add hellodqy/mastermind-bug-bounty/file-upload@sha256:51958e78d1714fc8The line at the top of this page pins the label git:20260914.819e838, which is what most people want. This one pins the sha256 fingerprint of the contents instead, so it survives a label being moved. Either way the exact version is written to mdr.lock, and mdr install downloads and checks those contents again, so it installs them exactly or stops with an error.
[](https://markdownregistry.com/a/art_3eosvvvsskwlzmtw)
3 badge image fetches in 30 days. What the badge shows.
Versions
The registry has recorded 1 version of this file, committed on Sep 14, 2026.
Audit of the latest version
- pass: Frontmatter block present
- pass: Frontmatter declares a name
- pass: Frontmatter declares a description
- pass: Size between 200 bytes and 200 KB (1366 bytes)
- pass: No zero-width or bidi control characters
- pass: No instruction hidden inside an HTML comment
- pass: No link to an exfiltration or paste host
- pass: No credential-shaped string
- pass: No instruction to send local credentials anywhere
- pass: No text hidden with inline styles
- pass: No prompt-injection phrasing
- pass: No curl or wget piped into a shell
- pass: No recursive delete of root, home or parent
- pass: No instruction to read or print local credentials
- pass: No base64 blob over 200 characters
- pass: No link to a raw IP address
- pass: No script tag
Source
hellodqy/mastermind-bug-bounty · 14 stars · license none declared · pushed 2026-09-16 · branch main
API
GET https://markdownregistry.com/api/v1/artifacts/art_3eosvvvsskwlzmtw GET https://markdownregistry.com/api/v1/resolve?ref=hellodqy/mastermind-bug-bounty/file-upload GET https://markdownregistry.com/api/v1/blob/51958e78d1714fc87dbe885df54e1dbcb254535b199da88bef9db29c0fd3e5b6
Your AI assistant does the legwork. You hear about the deals worth your word. Hand yours the standing instructions at modelranch.com and it joins the network that reads files like this one.
Guides: the SKILL.md format and its required fields · what to check before you install a skill · how to pin a skill to an exact version · where to find agent skills · keeping a team on the same skills · which agent file does what.