CVE-2026-34148

Fedify is a TypeScript library for building federated server apps powered by ActivityPub. Prior to 1.9.6, 1.10.5, 2.0.8, and 2.1.1, @fedify/fedify follows HTTP redirects recursively in its remote document loader and authenticated document loader without enforcing a maximum redirect count or visited-URL loop detection. An attacker who controls a remote ActivityPub key or actor URL can force a server using Fedify to make repeated outbound requests from a single inbound request, leading to resource consumption and denial of service. This vulnerability is fixed in 1.9.6, 1.10.5, 2.0.8, and 2.1.1.

CVSS v3 7.5 HIGH

7.5^/10

CVSS v3 : HIGH

Vector :

Exploitability : 3.9 / Impact : 3.6

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://github.com/fedify-dev/fedify/releases/tag/1.10.5	Release Notes
https://github.com/fedify-dev/fedify/releases/tag/1.9.6	Release Notes
https://github.com/fedify-dev/fedify/releases/tag/2.0.8	Release Notes
https://github.com/fedify-dev/fedify/releases/tag/2.1.1	Release Notes
https://github.com/fedify-dev/fedify/security/advisories/GHSA-gm9m-gwc4-hwgp	Exploit Vendor Advisory
https://github.com/fedify-dev/fedify/security/advisories/GHSA-gm9m-gwc4-hwgp	Exploit Vendor Advisory

Configurations

Configuration 1 (hide)

OR	cpe:2.3:a:fedify:fedify\/fedify::::::node.js::*
	cpe:2.3:a:fedify:fedify\/fedify::::::node.js::*
	cpe:2.3:a:fedify:fedify\/fedify::::::node.js::*
	cpe:2.3:a:fedify:fedify\/fedify::::::node.js::*

Configuration 2 (hide)

OR	cpe:2.3:a:fedify:fedify\/vocab-runtime::::::node.js::*
	cpe:2.3:a:fedify:fedify\/vocab-runtime::::::node.js::*

History

No history.

Information

Published : 2026-04-06 16:16

Updated : 2026-06-17 10:38

NVD link : CVE-2026-34148

Mitre link : CVE-2026-34148

CVE.ORG link : CVE-2026-34148

JSON object : View

Products Affected

fedify

fedify\/vocab-runtime
fedify\/fedify

CWE

CWE-400

Uncontrolled Resource Consumption

CWE-770

Allocation of Resources Without Limits or Throttling

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