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CVE-2026-34148

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

This page contains facts from public vulnerability sources. Check the original advisory before updating.

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 · EPSS 0.6% · Fix available

Published
Updated

Stack: node

Affected products and versions

  • fedify

    Versions
    • < 1.9.6: Affected
    • >= 1.10.0, < 1.10.5: Affected
    • >= 2.0.0, < 2.0.8: Affected
    • >= 2.1.0, < 2.1.1: Affected

    No fix published

  • vocab-runtime

    Versions
    • < 2.0.8: Affected
    • >= 2.1.0, < 2.1.1: Affected

    No fix published

  • @fedify/fedify npm

    Affected ranges
    • SEMVER: < 1.9.6

    Update to 1.9.6

  • @fedify/vocab-runtime npm

    Affected ranges
    • SEMVER: < 2.0.8

    Update to 2.0.8

  • @fedify/vocab-runtime npm

    Versions
    • 2.1.0
    Affected ranges
    • SEMVER: ≥ 2.1.0, < 2.1.1

    Update to 2.1.1

  • @fedify/fedify npm

    Affected ranges
    • SEMVER: ≥ 1.10.0, < 1.10.5

    Update to 1.10.5

  • @fedify/fedify npm

    Affected ranges
    • SEMVER: ≥ 2.0.0, < 2.0.8

    Update to 2.0.8

  • @fedify/fedify npm

    Versions
    • 2.1.0
    Affected ranges
    • SEMVER: ≥ 2.1.0, < 2.1.1

    Update to 2.1.1

Original sources

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