What’s Vulnerable › Vulnerabilities

CVE-2026-62857: Fedify: Server-Side Request Forgery in getNodeInfo() Allows Access to Internal Network Resources

• Severity: high (CVSS 8.8 v4.0)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.4% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-08-06 · updated 2026-10-24
• Weakness: CWE-918

Description

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 products

• fedify-dev fedify: from 1.2.0, < 1.9.13; from 1.10.0, < 1.10.12; from 2.0.0, < 2.0.22; from 2.1.0, < 2.1.18; from 2.2.0, < 2.2.7; from 2.3.0, < 2.3.2

References

• https://github.com/fedify-dev/fedify/releases/tag/2.3.2
• https://github.com/fedify-dev/fedify/security/advisories/GHSA-hqph-j65v-8cq5
• https://github.com/fedify-dev/fedify/security/advisories/GHSA-hqph-j65v-8cq5

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