CVE-2026-34148
Last modified
CVE-2026-34148 is a high-severity vulnerability rated 7.5/10 on the CVSS scale. 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. EPSS estimates a 0.55% chance of exploitation in the next 30 days.
Description
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.
Metrics
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Fedify | Fedify\/Fedify | < 1.9.6 |
| Fedify | Fedify\/Fedify | >= 1.10.0, < 1.10.5 |
| Fedify | Fedify\/Fedify | >= 2.0.0, < 2.0.8 |
| Fedify | Fedify\/Fedify | >= 2.1.0, < 2.1.1 |
| Fedify | Fedify\/Vocab-Runtime | < 2.0.8 |
| Fedify | Fedify\/Vocab-Runtime | >= 2.1.0, < 2.1.1 |
References
- https://github.com/fedify-dev/fedify/security/advisories/GHSA-gm9m-gwc4-hwgpExploit, Vendor Advisory
- https://github.com/fedify-dev/fedify/security/advisories/GHSA-gm9m-gwc4-hwgpExploit, Vendor Advisory
Timeline
- Published
- Last Modified
- Status
- Analyzed
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How Strix Helps
- How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
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