CVE-2026-62857
8.8
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:L/SC:N/SI:N/SA:N
Summary
Fedify is a TypeScript library for building federated server apps powered by ActivityPub. From version 1.2.0 through the affected 1.9, 1.10, 2.0, 2.1, 2.2, and 2.3 maintenance lines, getNodeInfo() follows an attacker-controlled links[].href value from /.well-known/nodeinfo without scheme, redirect, or private-address validation, allowing requests to loopback, link-local, cloud metadata, and private-network services and returning their response bodies. This issue is fixed in versions 1.9.13, 1.10.12, 2.0.22, 2.1.18, 2.2.7, and 2.3.2.
Affected Software
| Vendor | Product | Version Range | Status |
|---|---|---|---|
| fedify-dev | fedify | >= 1.2.0, < 1.9.13 | affected |
| fedify-dev | fedify | >= 1.10.0, < 1.10.12 | affected |
| fedify-dev | fedify | >= 2.0.0, < 2.0.22 | affected |
| fedify-dev | fedify | >= 2.1.0, < 2.1.18 | affected |
| fedify-dev | fedify | >= 2.2.0, < 2.2.7 | affected |
| fedify-dev | fedify | >= 2.3.0, < 2.3.2 | affected |
Weaknesses
- CWE-918: CWE-918: Server-Side Request Forgery (SSRF)
References
- https://github.com/fedify-dev/fedify/security/advisories/GHSA-hqph-j65v-8cq5
- https://github.com/fedify-dev/fedify/releases/tag/2.3.2
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