CVE Watch2 de nov. de 2026

CVE-2026-63115

ActivityPub is a multi-tenant ActivityPub server for Ghost, built with Fedify. From 1.0.0 until 1.2.6, the `Undo` handler allows a remote fe

CVSS

5.3

Média

EPSS

0.1%

KEV

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Exploit Today

0-100

Publicado: 30 de out. de 2026 · Última mod.: 2 de nov. de 2026 · CWE-290 · CWE-345 · CWE-863

EPSS · 30d

0.1%EPSS · 30 dias0.1%

2026-10-312026-11-07

Descrição técnica

ActivityPub is a multi-tenant ActivityPub server for Ghost, built with Fedify. From 1.0.0 until 1.2.6, the `Undo` handler allows a remote federated server to cause the service to act on a `follow` or `repost` as though the activity came from a different account. This permits removal of an existing `follow` relationship or `repost` belonging to another account without that account's involvement. No private data is exposed and content is not modified; the affected relationships can be re-established. Services proxying to Ghost's hosted ActivityPub server have already been updated, while self-hosted services require an updated image and redeployment. This issue is fixed in version 1.2.6.

Referências oficiais

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———Hickory DNS hickory-net 0.26.0-beta.1 before 0.26.2 and hickory-proto through 0.26.0-alpha.1 fail to verify, per RFC 6840 §4.4, that an NSEC or NSEC3 record denying a DS RRset also proves the delegation's NS record exists. Attackers can reuse child-side NSEC or NSEC3 records to fake an insecure delegation and forge child-zone records.6h CVE-2026-1235876.8 MÉD

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