CVE-2025-68475

Name: CVE-2025-68475
Creator: NVD / NIST
Published: 2025-12-22T22:16:09.143+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 7.5/10EPSS 0.48%

Last modified Jun 17, 2026

CVE-2025-68475 is a high-severity vulnerability rated 7.5/10 on the CVSS scale. 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. EPSS estimates a 0.48% chance of exploitation in the next 30 days.

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.

Metrics

CVSS 3.1

7.5/10

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

EPSS Probability

0.48%

37.8th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-1333

Affected Software

Vendor	Product	Versions
Fedify	Fedify	< 1.6.13
Fedify	Fedify	>= 1.7.0, < 1.7.14
Fedify	Fedify	>= 1.8.1, < 1.8.15
Fedify	Fedify	>= 1.9.0, < 1.9.2

References

https://github.com/fedify-dev/fedify/commit/2bdcb24d7d6d5886e0214ed504b63a6dc5488779Patch
https://github.com/fedify-dev/fedify/commit/bf2f0783634efed2663d1b187dc55461ee1f987aPatch
https://github.com/fedify-dev/fedify/releases/tag/1.6.13Product, Release Notes
https://github.com/fedify-dev/fedify/releases/tag/1.7.14Product, Release Notes
https://github.com/fedify-dev/fedify/releases/tag/1.8.15Product, Release Notes
https://github.com/fedify-dev/fedify/releases/tag/1.9.2Product, Release Notes
https://github.com/fedify-dev/fedify/security/advisories/GHSA-rchf-xwx2-hm93Exploit, Mitigation, Vendor Advisory

Timeline

Published: Dec 22, 2025
Last Modified: Jun 17, 2026
Status: Analyzed

Frequently Asked Questions

What is CVE-2025-68475?

How severe is CVE-2025-68475?

CVE-2025-68475 has a CVSS score of 7.5/10 (HIGH severity). The EPSS model estimates a 0.48% probability of exploitation in the next 30 days.

How do I fix CVE-2025-68475?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2025-68475?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST