# CVE-2025-68475

## Summary

- **CVE ID:** CVE-2025-68475
- **Severity:** HIGH
- **CVSS Score:** 7.5 (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H)
- **CWE:** CWE-1333
- **Published:** Dec 22, 2025
- **Last Modified:** Mar 13, 2026

## Description

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.

## Affected Products

- fedify-dev — fedify (< 1.6.13)
- fedify-dev — fedify (>= 1.7.0, < 1.7.14)
- fedify-dev — fedify (>= 1.8.0, < 1.8.15)
- fedify-dev — fedify (>= 1.9.0, < 1.9.2)

## References

- [CNA](https://github.com/fedify-dev/fedify/security/advisories/GHSA-rchf-xwx2-hm93)
- [CNA](https://github.com/fedify-dev/fedify/commit/2bdcb24d7d6d5886e0214ed504b63a6dc5488779)
- [CNA](https://github.com/fedify-dev/fedify/commit/bf2f0783634efed2663d1b187dc55461ee1f987a)
- [CNA](https://github.com/fedify-dev/fedify/releases/tag/1.6.13)
- [CNA](https://github.com/fedify-dev/fedify/releases/tag/1.7.14)
- [CNA](https://github.com/fedify-dev/fedify/releases/tag/1.8.15)
- [CNA](https://github.com/fedify-dev/fedify/releases/tag/1.9.2)

## Exploitation Prediction (EPSS)

- **EPSS Score:** 0.55%
- **EPSS Percentile:** 44.1

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_Exported from OnDuty AI Vulnerability Intelligence on 2026-09-11._