CVEvulnerability

CVE-2026-42462

7.0 HIGH Published 2026-06-10 Modified 2026-07-23 Official page ↗
Status
Deferred
Published
2026-06-10
Last modified
2026-07-23
Assigner
[email protected]
CVSS 3.1 ([email protected])
7.0 HIGH — CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:H/A:L
Weaknesses
CWE-1289, CWE-180, CWE-347, CWE-436

Description

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.

Related

Weakness · CWE (4)

  • CWE-1289 Improper Validation of Unsafe Equivalence in Input weakness
  • CWE-180 Incorrect Behavior Order: Validate Before Canonicalize weakness
  • CWE-347 Improper Verification of Cryptographic Signature weakness
  • CWE-436 Interpretation Conflict weakness

References