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
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| fedify-dev | fedify | < 1.6.13, >= 1.7.0, < 1.7.14, >= 1.8.0, < 1.8.15, >= 1.9.0, < 1.9.2 | — |
Affected packages
| Ecosystem | Package | Affected | Fixed | Record |
|---|---|---|---|---|
| npm | @fedify/fedify | < 1.6.13 | 1.6.13 | GHSA-rchf-xwx2-hm93 |
| npm | @fedify/fedify | >= 1.7.0, < 1.7.14 | 1.7.14 | GHSA-rchf-xwx2-hm93 |
| npm | @fedify/fedify | >= 1.8.0, < 1.8.15 | 1.8.15 | GHSA-rchf-xwx2-hm93 |
| npm | @fedify/fedify | >= 1.9.0, < 1.9.2 | 1.9.2 | GHSA-rchf-xwx2-hm93 |
References
- https://github.com/fedify-dev/fedify/security/advisories/GHSA-rchf-xwx2-hm93
- https://github.com/fedify-dev/fedify/commit/2bdcb24d7d6d5886e0214ed504b63a6dc5488779
- https://github.com/fedify-dev/fedify/commit/bf2f0783634efed2663d1b187dc55461ee1f987a
- https://github.com/fedify-dev/fedify/releases/tag/1.6.13
- https://github.com/fedify-dev/fedify/releases/tag/1.7.14
- https://github.com/fedify-dev/fedify/releases/tag/1.8.15
- https://github.com/fedify-dev/fedify/releases/tag/1.9.2