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CVE-2025-68475
Good to know:
Date: December 22, 2025
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 packages/fedify/src/runtime/docloader.ts:259 contains nested quantifiers that cause catastrophic backtracking when processing maliciously crafted HTML responses. This issue has been patched in versions 1.6.13, 1.7.14, 1.8.15, and 1.9.2.
Severity Score
Related Resources (10)
Severity Score
Weakness Type (CWE)
Inefficient Regular Expression Complexity
CWE-1333Top Fix
Upgrade Version
Upgrade to version @fedify/fedify - 1.6.13;@fedify/fedify - 1.7.14;@fedify/fedify - 1.8.15;@fedify/fedify - 1.9.2;https://github.com/fedify-dev/fedify.git - 1.6.13;https://github.com/fedify-dev/fedify.git - 1.7.14;https://github.com/fedify-dev/fedify.git - 1.8.15;https://github.com/fedify-dev/fedify.git - 1.9.2
CVSS v3.1
| Base Score: |
|
|---|---|
| Attack Vector (AV): | NETWORK |
| Attack Complexity (AC): | LOW |
| Privileges Required (PR): | NONE |
| User Interaction (UI): | NONE |
| Scope (S): | UNCHANGED |
| Confidentiality (C): | NONE |
| Integrity (I): | NONE |
| Availability (A): | HIGH |