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CVE-2025-54888

CVE.org · Published

Historical CVEsJSONAI instructions

Record status
Published
Identifier year (not publication year)
2025
Source publication
Source updated
Imported by cveboard
Source snapshot
cve_2026-10-24_midnight_baseline ·

Plain text

CNA source text (English)

@fedify/fedify: Improper Authentication and Incorrect Authorization

Fedify is a TypeScript library for building federated server apps powered by ActivityPub. In versions below 1.3.20, 1.4.0-dev.585 through 1.4.12, 1.5.0-dev.636 through 1.5.4, 1.6.0-dev.754 through 1.6.7, 1.7.0-pr.251.885 through 1.7.8 and 1.8.0-dev.909 through 1.8.4, an authentication bypass vulnerability allows any unauthenticated attacker to impersonate any ActivityPub actor by sending forged activities signed with their own keys. Activities are processed before verifying the signing key belongs to the claimed actor, enabling complete actor impersonation across all Fedify instances. This is fixed in versions 1.3.20, 1.4.13, 1.5.5, 1.6.8, 1.7.9 and 1.8.5.

Scoped product and version facts

Fix information unknown; no fixed version is derived here. Missing information does not prove that no fix exists.

Exploitation unknown; this catalogue does not assess exploitation.

fedify

Vendor
fedify-dev
Product
fedify
Platforms
Unknown
Default status
Unknown
fedify · Scoped product and version facts
Version (version)Status (status)Version scheme (versionType)Exclusive end (lessThan)Inclusive end (lessThanOrEqual)Status changes (at → status)
< 1.3.20affectedUnavailableUnavailableUnavailableNone listed
>= 1.4.0-dev.585, < 1.4.13affectedUnavailableUnavailableUnavailableNone listed
>= 1.5.0-dev.636, < 1.5.5affectedUnavailableUnavailableUnavailableNone listed
>= 1.6.0-dev.754, < 1.6.8affectedUnavailableUnavailableUnavailableNone listed
>= 1.7.0-pr.251.885, < 1.7.9affectedUnavailableUnavailableUnavailableNone listed
>= 1.8.0-dev.909, < 1.8.5affectedUnavailableUnavailableUnavailableNone listed