Regular Expression Denial Of Service (ReDoS)

@fedify/fedify is vulnerable to Regular Expression Denial of Service ReDoS. The vulnerability is due to nested quantifiers in the HTML parsing regex within the document loader, which allows an attacker to trigger catastrophic backtracking by sending specially crafted HTML responses...

GHSA-RCHF-XWX2-HM93 Fedify has ReDoS Vulnerability in HTML Parsing Regex

Hi Fedify team! 👋 Thank you for your work on Fedify—it's a fantastic library for building federated applications. While reviewing the codebase, I discovered a Regular Expression Denial of Service ReDoS vulnerability that I'd like to report. I hope this helps improve the project's security. ---...

CVE-2025-68475 Fedify has ReDoS Vulnerability in HTML Parsing Regex

Fedify is a TypeScript library for building federated server apps powered by ActivityPub. Prior to versions 1.6.13, 1.7.14, 1.8.15, and 1.9.2, a Regular Expression Denial of Service ReDoS vulnerability exists in Fedify's document loader. The HTML parsing regex at...