cache-poisoning SKILL.md skillA
cache-poisoning 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/cache-poisoning@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/cache_poisoning/SKILL.md- Versions recorded
- 5
- Latest version
- git:20260914.819e838, committed Sep 14, 2026
- First version recorded
- Jun 2, 2026
- Size
- 1,028 bytes
- Repository stars
- 14
- License
- none declared
Analyze cache key confusion as a path to stored impact.
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
# Cache Poisoning ## Goal 判断未进入 cache key 的 Header/参数是否能改变缓存响应，并产生可验证的持久影响。 ## Tools / Inputs - CDN/cache headers、Host/X-Forwarded-*、query params、static/dynamic responses - 资源索引：`references/INDEX.md`；候选资源：`cache-poisoning-testing.md`；仅在已确认过滤差异时再读 `bypass_techniques.md` ## Constraints 1. 不向生产用户投递恶意内容。 2. 使用自控无害标记证明污染。 3. 必须证明缓存命中和跨请求可见。 4. 不把 header reflection 单独当漏洞。 5. 成功后追问 XSS、redirect、credential leakage、DoS 风险。 ## Chain Questions - 哪些输入影响响应但不影响 cache key？ - 污染是否可被其他用户命中？ - 影响能否升级为脚本执行、跳转、敏感信息暴露？ - 是否存在更安全的证明方式？
Read the whole file at its exact version.
How to install
mdr add hellodqy/mastermind-bug-bounty/cache-poisoning@sha256:8a42bbfb950a09baThe 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_eezosdiobp4cerk7)
3 badge image fetches in 30 days. What the badge shows.
Versions
The registry has recorded 5 versions of this file, between Jun 2, 2026 and Sep 14, 2026, about one every 26 days. Its first recorded version is graded B and its latest A.
| version | committed | commit | size | audit | |
|---|---|---|---|---|---|
| git:20260914.819e838 latest | 2026-09-14 | 819e838 | 1,028 B | A | view · diff |
| git:20260709.c284c01 | 2026-07-09 | c284c01 | 960 B | A | view · diff |
| git:20260709.a882698 | 2026-07-09 | a882698 | 926 B | A | view · diff |
| git:20260620.aa6add7 | 2026-06-20 | aa6add7 | 6,056 B | B | view · diff |
| git:20260602.95e27a7 | 2026-06-02 | 95e27a7 | 6,081 B | B | 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 (1028 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_eezosdiobp4cerk7 GET https://markdownregistry.com/api/v1/resolve?ref=hellodqy/mastermind-bug-bounty/cache-poisoning GET https://markdownregistry.com/api/v1/blob/8a42bbfb950a09ba2a11197ca911669befd5ce949b03d11139e0629db1917b2e
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.