prototype-pollution SKILL.md skillA
prototype-pollution 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/prototype-pollution@git:20260915.d2c52f2Pins git:20260915.d2c52f2 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/prototype_pollution/SKILL.md- Versions recorded
- 4
- Latest version
- git:20260915.d2c52f2, committed Sep 15, 2026
- First version recorded
- Jun 2, 2026
- Size
- 1,117 bytes
- Repository stars
- 14
- License
- none declared
Reason about object merge behavior and whether pollution reaches an exploitable gadget.
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
# Prototype Pollution ## Goal 判断用户可控对象是否能污染原型，并进一步到达鉴权绕过、配置篡改、XSS 或 RCE gadget。 ## Tools / Inputs - JSON body、query parser、merge/clone/update functions、client state - 资源索引：`references/INDEX.md`；确认 pollution source 后读 `prototype-pollution-gadgets.md`；通用背景再读 `bug_classes.md` ## Constraints 1. 污染存在不等于漏洞，必须找到 gadget 或安全影响。 2. 用无害属性验证，不破坏运行状态。 3. 区分服务端、客户端、构建时污染。 4. 成功后追问能控制哪些配置、模板、权限或路径。 5. 不能证明 gadget 时标记 PENDING。 ## Chain Questions - 污染能否持久化到后续请求或其他用户？ - 哪些代码读取了被污染属性？ - 是否能影响 sanitizer、模板、权限、命令或路径？ - 是否能和 XSS/SSRF/RCE 串联？
Read the whole file at its exact version.
How to install
mdr add hellodqy/mastermind-bug-bounty/prototype-pollution@sha256:0216135ab94e6ca9The line at the top of this page pins the label git:20260915.d2c52f2, 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_5pksbz7dyfjk5qhh)
4 badge image fetches in 30 days. What the badge shows.
Versions
The registry has recorded 4 versions of this file, between Jun 2, 2026 and Sep 15, 2026, about one every 35 days.
| version | committed | commit | size | audit | |
|---|---|---|---|---|---|
| git:20260915.d2c52f2 latest | 2026-09-15 | d2c52f2 | 1,117 B | A | view · diff |
| git:20260709.c284c01 | 2026-07-09 | c284c01 | 1,047 B | A | view · diff |
| git:20260709.a882698 | 2026-07-09 | a882698 | 1,013 B | A | view · diff |
| git:20260602.95e27a7 | 2026-06-02 | 95e27a7 | 7,367 B | A | view |
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 (1117 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_5pksbz7dyfjk5qhh GET https://markdownregistry.com/api/v1/resolve?ref=hellodqy/mastermind-bug-bounty/prototype-pollution GET https://markdownregistry.com/api/v1/blob/0216135ab94e6ca9d7a223258fca77ac2ebe21a3b9bb813d313f372f3605448c
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.