CVE-2025-68475
Fedify has ReDoS Vulnerability in HTML Parsing Regex
- Published
- Updated
- Reserved
- Assigned by
- GitHub_M
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.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| GitHub_MCNA (assigner) | 3.1 | High7.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |
| NVDNVD · Analyzed | 3.1 | High7.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |
- EPSS (exploitation in 30 days)
- 0.56% · top 53% of all CVEs (6 Nov 2026)
- CISA SSVC
- Exploitation: poc · Automatable: yes · Technical impact: partial
The list uses the assigner's score when there is one, then CISA's, then NVD's: High 7.5.
Weakness
Affected products
- affected < 1.6.13
- affected >= 1.7.0, < 1.7.14
- affected >= 1.8.0, < 1.8.15
- affected >= 1.9.0, < 1.9.2
Affected packages
From reviewed advisories of the GitHub Advisory Database.
- npm@fedify/fedifyGHSA-rchf-xwx2-hm93 (opens in a new tab)
References (7)
- https://github.com/fedify-dev/fedify/security/advisories/GHSA-rchf-xwx2-hm93 (opens in a new tab)x_refsource_CONFIRM
- https://github.com/fedify-dev/fedify/commit/2bdcb24d7d6d5886e0214ed504b63a6dc5488779 (opens in a new tab)x_refsource_MISC
- https://github.com/fedify-dev/fedify/commit/bf2f0783634efed2663d1b187dc55461ee1f987a (opens in a new tab)x_refsource_MISC
- https://github.com/fedify-dev/fedify/releases/tag/1.6.13 (opens in a new tab)x_refsource_MISC
- https://github.com/fedify-dev/fedify/releases/tag/1.7.14 (opens in a new tab)x_refsource_MISC
- https://github.com/fedify-dev/fedify/releases/tag/1.8.15 (opens in a new tab)x_refsource_MISC
- https://github.com/fedify-dev/fedify/releases/tag/1.9.2 (opens in a new tab)x_refsource_MISC
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisory GHSA-rchf-xwx2-hm93 (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://trackcve.app/cve/CVE-2025-68475)Record last updated .