Cloudflare's Buggy Browser Detection Blocks Users From Multiple Sites
2025-03-11

Users of less popular web browsers are being blocked from accessing numerous websites due to glitches in Cloudflare's browser detection system. This recurring issue, affecting users of Pale Moon, Falkon, SeaMonkey, and even some Firefox ESR versions, has persisted since at least 2015. Affected sites include science.org, steamdb.info, and ironically, community.cloudflare.com. The problem seems to stem from Cloudflare's bot-detection mechanisms, which mistakenly flag uncommon browsers or requests lacking referrer IDs as suspicious. While users can report issues on Cloudflare's forums, the lack of response suggests a lack of attention from the company.