Is CVE-2026-34148 actively exploited?

No active exploitation of CVE-2026-34148 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2026-34148 be exploited remotely?

Yes. CVE-2026-34148 is exploitable remotely over the network (CVSS attack vector: Network).

What is the CVSS score of CVE-2026-34148?

CVE-2026-34148 has a CVSS score of 7.5 (HIGH).

HOME VULNERABILITIESCVE-2026-34148

HIGH

CVE-2026-34148

CWE-400Published: April 6, 2026· Updated: Apr 7, 2026

7.5

CVSS v3.1

EPSS:0.04%probability of exploitation in 30 daysPercentile:12.0th

Official 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.

NVD Source

Technical Analysis

CVE-2026-34148 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

The vulnerability requires no privileges and no user interaction, making it a prime target for automated exploitation campaigns and worm-like propagation.

A successful exploit results in availability disruption (denial of service), with a CVSS base score of 7.5.