Critical incident

Crossref: Metadata Plus REST API not validating API keys

Oct 5, 2026, 12:21 UTC

started

16:25 UTC

resolved

4 h 04 min

duration

Affected: Plus REST API

Current status of Crossref: Operational — live Crossref status

Timeline

Oct 5, 2026, 12:21 UTC
investigating
Request to the Metadata Plus pool of the REST API are receiving 401 responses (access denied). We are investigating the cause.
Oct 5, 2026, 12:41 UTC
investigating
The API is back up but we are still investigating and monitoring.
Oct 5, 2026, 12:49 UTC
investigating
We are continuing the investigate the outage. The Plus pool was down between 12:00 and 12:36 on 5 Oct, 2026.
Oct 5, 2026, 13:01 UTC
monitoring
A fix has been implemented and we are continuing to monitor the performance of the Metadata Plus pool.
Oct 5, 2026, 16:25 UTC
resolved
We have identified the problem due to a bug in a deployment. The deployment was reversed and the Plus pool of the API is working normally again.

Updates as published by Crossref (original).

Voyado 13:16 UTC · Engage - queue/buildup of some contact events
Gong 13:12 UTC · People, Flows, and Gong Extension - Service disruption
Anthropic (Claude) 13:05 UTC · Elevated errors for Claude Mythos 5.1 and Claude Fable 5.1
Tiendanube AR 13:03 UTC · Interrupción parcial identificada - Administrador Nube
IG 13:00 UTC · login issues on web trading platform
Imagine Learning 12:56 UTC · Imagine Math - Rostering updates delayed
CivicPlus 12:46 UTC · Web Central Degraded Performance
OpenAI 12:44 UTC · Issues saving and editing Pages
Netlify 12:44 UTC · Error accessing Netlify-hosted sites
Cloudinary 12:20 UTC · Usage reports unavailable in Console Dashboard
Axis 12:15 UTC · Video Source Inventory Problem
Blackbaud 12:07 UTC · Active Issue Alert Luminate - 000696087
IPVanish 12:05 UTC · Chicago, USA
Toast System 11:33 UTC · Deposit Delay
WiscNet 11:28 UTC · [2299415] Milwaukee Technical College - 1784 - Down