CVE-2026-42261 PromptHub: Authenticated SSRF via IPv6 filter bypass in `POST /api/skills/fetch-remote`

PromptHub is an all-in-one AI toolbox for prompt, skill, and agent management. From version 0.4.9 to before version 0.5.4, apps/web/src/routes/skills.ts exposes an authenticated endpoint POST /api/skills/fetch-remote that fetches a user-supplied URL server-side and reflects the response body up t...

CVE-2026-42261 PromptHub: Authenticated SSRF via IPv6 filter bypass in `POST /api/skills/fetch-remote`

PromptHub is an all-in-one AI toolbox for prompt, skill, and agent management. From version 0.4.9 to before version 0.5.4, apps/web/src/routes/skills.ts exposes an authenticated endpoint POST /api/skills/fetch-remote that fetches a user-supplied URL server-side and reflects the response body up t...

CVE-2026-42261

PromptHub prior to v0.5.4 exposes an authenticated SSRF via POST /api/skills/fetch-remote in apps/web/src/routes/skills.ts. The endpoint fetches a user-supplied URL server-side and reflects the response (up to 5 MB) back to the caller. The isPrivateIPv6 check in apps/web/src/utils/remote-http.ts ...

PromptHub 输入验证错误漏洞

PromptHub is an AI prompt and skill management tool developed by Legeling. In versions 0.4.9 to 0.5.4 of PromptHub, there was a vulnerability related to input validation errors. This vulnerability stemmed from the endpoint POST /api/skills/fetch-remote, which retrieves the URL provided by the use...