High 7.5Published Apr 6, 2026

CVE-2026-34148Fedify affected by resource exhaustion caused by unbounded redirect following during remote key/document resolution

Updated under an hour ago (Oct 26, 2026, 9:23 PM ET)

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It affects @fedify fedify and 3 other products. Add what you run to find out whether that includes you.

No exploitation reported and no EPSS estimate yet.

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Every CVE for @fedify fedify

Exploited in the last 30 days

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: 7.5 HIGH (v3.1, CNA)CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Weakness (CWE): CWE-400, CWE-770
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: GitHub_M
NVD analysis: Analyzed
Record last updated: Apr 7, 2026
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

@fedify fedify fedify:fedify (from the name)	before 1.9.6; from 1.10.0, < 1.10.5; from 2.0.0, < 2.0.8; from 2.1.0, < 2.1.1	CNA record
@fedify vocab-runtime fedify:vocab_runtime (from the name)	before 2.0.8; from 2.1.0, < 2.1.1	CNA record
fedify fedify/fedify fedify:fedify/fedify	before 1.9.6; from 1.10.0 before 1.10.5; from 2.0.0 before 2.0.8; from 2.1.0 before 2.1.1	NVD
fedify fedify/vocab-runtime fedify:fedify/vocab-runtime	before 2.0.8; from 2.1.0 before 2.1.1	NVD

References

References

https://github.com/fedify-dev/fedify/security/advisories/GHSA-gm9m-gwc4-hwgp	x-refsource-confirm, exploit, vendor-advisory
https://github.com/fedify-dev/fedify/releases/tag/1.10.5	x-refsource-misc, release-notes
https://github.com/fedify-dev/fedify/releases/tag/1.9.6	x-refsource-misc, release-notes
https://github.com/fedify-dev/fedify/releases/tag/2.0.8	x-refsource-misc, release-notes
https://github.com/fedify-dev/fedify/releases/tag/2.1.1	x-refsource-misc, release-notes

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.