CVE-2026-62857 (GCVE-0-2026-62857)

Vulnerability from cvelistv5 – Published: 2026-08-06 21:04 – Updated: 2026-08-08 02:40
VLAI
Title
Fedify: Server-Side Request Forgery in getNodeInfo() Allows Access to Internal Network Resources
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.
Severity
8.8 (High)
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
SSVC
Exploitation: poc Automatable: yes Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-08 02:39 UTC
CWE
  • CWE-918 - Server-Side Request Forgery (SSRF)
Assigner
GitHub_M CNA under the mitre root
CNA scorecard C 72/100 over 7886 records in the last 180 days details
References
Impacted products
Vendor Product Version CPE status
fedify-dev fedify Affected: >= 1.2.0, < 1.9.13
Affected: >= 1.10.0, < 1.10.12
Affected: >= 2.0.0, < 2.0.22
Affected: >= 2.1.0, < 2.1.18
Affected: >= 2.2.0, < 2.2.7
Affected: >= 2.3.0, < 2.3.2
guessed Create a notification for this product.
Show details on NVD website
To clipboard 

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