CVE-2026-58593 NodeBB - ActivityPub Author Spoofing via Unvalidated attributedTo Mapped to Local User

NodeBB does not bind the claimed author of an inbound ActivityPub object to the authenticated remote actor. The inbound middleware verifies the HTTP-signature actor and checks the origin of object.id, but never validates that attributedTo corresponds to the sender. In the object mock, attributedT...

EUVD-2026-41131

NodeBB does not bind the claimed author of an inbound ActivityPub object to the authenticated remote actor. The inbound middleware verifies the HTTP-signature actor and checks the origin of object.id, but never validates that attributedTo corresponds to the sender. In the object mock, attributedT...

CVE-2026-58593

NodeBB is affected by CVE-2026-58593 where inbound ActivityPub objects are not correctly bound to the authenticated remote actor. The middleware verifies the HTTP-signature actor and origin of object.id but does not validate that attributedTo corresponds to the sender, treating attributedTo as a ...

PT-2026-54922

Name of the Vulnerable Software and Affected Versions NodeBB affected versions not specified Description NodeBB fails to bind the claimed author of an inbound ActivityPub object to the authenticated remote actor. While the inbound middleware verifies the HTTP-signature actor and the origin of the...

CVE-2026-11401

The CVE-2026-11401 entry describes an untrusted search path vulnerability in the GlobalDatabasePlugin of the AWS Advanced Go Wrapper for Amazon Aurora PostgreSQL. A remote authenticated low-privilege actor can escalate to other Amazon RDS user privileges (including rds_superuser) via a crafted fu...

CVE-2026-8596

Cleartext storage of sensitive information in the ModelBuilder/Serve component in Amazon SageMaker Python SDK before v2.257.2 and v3 before v3.8.0 might allow a remote authenticated actor to extract the HMAC signing key from SageMaker API responses and forge valid integrity signatures for special...

CVE-2026-34148

Fedify is a TypeScript library for building federated server apps powered by ActivityPub. Prior to 1.9.6, 1.10.5, 2.0.8, and 2.1.1, @fedify/fedify follows HTTP redirects recursively in its remote document loader and authenticated document loader without enforcing a maximum redirect count or...

Leantime allows Cross-Site Request Forgery (CSRF)

CSRF Summary A cross-site request forgery vulnerability allows a remote actor to create an account with Owner privileges. By luring an Owner or Administrator into clicking a button on an attacker-controlled website, a request will be issued, generating an account with the attacker's information a...

GO-2024-3031 Mattermost allows a remote actor to make an arbitrary local channel read-only in github.com/mattermost/mattermost-server

Mattermost allows a remote actor to make an arbitrary local channel read-only in github.com/mattermost/mattermost-server...

GO-2024-3022 Mattermost allows remote actor to set arbitrary RemoteId values for synced users in github.com/mattermost/mattermost-server

Mattermost allows remote actor to set arbitrary RemoteId values for synced users in github.com/mattermost/mattermost-server...

GO-2024-3020 Mattermost allows a remote actor to permanently delete local data by abusing dangerous error handling in github.com/mattermost/mattermost-server

Mattermost allows a remote actor to permanently delete local data by abusing dangerous error handling in github.com/mattermost/mattermost-server...

GO-2024-3023 Mattermost allows remote actor to create/update/delete posts in arbitrary channels in github.com/mattermost/mattermost-server

Mattermost allows remote actor to create/update/delete posts in arbitrary channels in github.com/mattermost/mattermost-server...

GHSA-762M-4CX6-6MF4 Mattermost allows a remote actor to permanently delete local data by abusing dangerous error handling

Mattermost versions 9.9.x = 9.9.0, 9.5.x = 9.5.6, 9.7.x = 9.7.5, 9.8.x = 9.8.1 fail to properly safeguard an error handling which allows a malicious remote to permanently delete local data by abusing dangerous error handling, when share channels were enabled...

GHSA-VG67-CHM7-8M3J Mattermost allows remote actor to create/update/delete posts in arbitrary channels

Mattermost versions 9.9.x = 9.9.0, 9.5.x = 9.5.6, 9.7.x = 9.7.5, 9.8.x = 9.8.1 fail to properly validate synced posts, when shared channels are enabled, which allows a malicious remote to create/update/delete arbitrary posts in arbitrary channels...

GHSA-9FPW-C9X7-CV3J Mattermost allows remote actor to set arbitrary RemoteId values for synced users

Mattermost versions 9.9.x = 9.9.0 and 9.5.x = 9.5.6 fail to validate the source of sync messages and only allow the correct remote IDs, which allows a malicious remote to set arbitrary RemoteId values for synced users and therefore claim that a user was synced from another remote...

GHSA-JR9X-3X7M-4J75 Mattermost allows a remote actor to make an arbitrary local channel read-only

Mattermost versions 9.9.x = 9.9.0, 9.5.x = 9.5.6, 9.7.x = 9.7.5 and 9.8.x = 9.8.1 fail to disallow the modification of local channels by a remote, when shared channels are enabled, which allows a malicious remote to make an arbitrary local channel read-only...

Mattermost allows a remote actor to make an arbitrary local channel read-only

Mattermost versions 9.9.x = 9.9.0, 9.5.x = 9.5.6, 9.7.x = 9.7.5 and 9.8.x = 9.8.1 fail to disallow the modification of local channels by a remote, when shared channels are enabled, which allows a malicious remote to make an arbitrary local channel read-only...

Mattermost allows a remote actor to permanently delete local data by abusing dangerous error handling

Mattermost versions 9.9.x = 9.9.0, 9.5.x = 9.5.6, 9.7.x = 9.7.5, 9.8.x = 9.8.1 fail to properly safeguard an error handling which allows a malicious remote to permanently delete local data by abusing dangerous error handling, when share channels were enabled...

PT-2024-29301 · Mattermost · Mattermost

Name of the Vulnerable Software and Affected Versions: Mattermost versions 9.5.x through 9.5.6 Mattermost versions 9.7.x through 9.7.5 Mattermost versions 9.8.x through 9.8.1 Mattermost versions 9.9.x through 9.9.0 Description: The issue allows a malicious remote actor to make an arbitrary local...

DEBIAN-CVE-2023-38283

In OpenBGPD before 8.1, incorrect handling of BGP update data length of path attributes set by a potentially distant remote actor may cause the system to incorrectly reset a session. This is fixed in OpenBSD 7.3 errata 006...