CVE-2026-42462
CVE-2026-42462 · Fedify has an LD-Signature Bypass via JSON-LD Named-Graph Restructuring
This page contains facts from public vulnerability sources. Check the original advisory before updating.
Fedify is a TypeScript library for building federated server apps powered by ActivityPub. Prior to versions 1.9.11, 1.10.10, 2.0.18, 2.1.14, and 2.2.3, an attacker can make use of JSON-LD features to restructure a JSON-LD document that would change how Fedify interprets it without changing its Linked Data Signature, allowing them to alter a third-party signed activity they have received. Versions 1.9.11, 1.10.10, 2.0.18, 2.1.14, and 2.2.3 fix the issue.
CVSS 7.0 · High · EPSS 0.2% · Fix available
- Published
- Updated
Stack: node
Affected products and versions
fedify
- Versions
- >= 2.2.0, < 2.2.3: Affected
- >= 2.1.0, < 2.1.14: Affected
- >= 2.0.0, < 2.0.18: Affected
- >= 1.10.0, < 1.10.10: Affected
- < 1.9.11: Affected
No fix published
@fedify/fedify npm
- Affected ranges
- SEMVER: ≥ 2.2.0, < 2.2.3
Update to 2.2.3
@fedify/fedify npm
- Affected ranges
- SEMVER: ≥ 2.1.0, < 2.1.14
Update to 2.1.14
@fedify/fedify npm
- Affected ranges
- SEMVER: ≥ 2.0.0, < 2.0.18
Update to 2.0.18
@fedify/fedify npm
- Affected ranges
- SEMVER: ≥ 1.10.0, < 1.10.10
Update to 1.10.10
@fedify/fedify npm
- Affected ranges
- SEMVER: < 1.9.11
Update to 1.9.11