CVE-2026-28432 HTTP signature verification can be bypassed

Misskey is an open source, federated social media platform. All Misskey servers prior to 2026.3.1 contain a vulnerability that allows bypassing HTTP signature verification. Although this is a vulnerability related to federation, it affects all servers regardless of whether federation is enabled o...

EUVD-2026-10368

Misskey is an open source, federated social media platform. All Misskey servers prior to 2026.3.1 contain a vulnerability that allows bypassing HTTP signature verification. Although this is a vulnerability related to federation, it affects all servers regardless of whether federation is enabled o...

CVE-2026-28432

CVE-2026-28432: Misskey HTTP signature verification bypass . Affects Misskey servers prior to 2026.3.1, allowing bypass of HTTP signature verification (federation-related vulnerability that affects all servers, regardless of federation enablement). Root cause: bypass of the HTTP signature check. ...

CVE-2026-28432 HTTP signature verification can be bypassed

Misskey is an open source, federated social media platform. All Misskey servers prior to 2026.3.1 contain a vulnerability that allows bypassing HTTP signature verification. Although this is a vulnerability related to federation, it affects all servers regardless of whether federation is enabled o...

EUVD-2026-10366

Misskey is an open source, federated social media platform. All Misskey servers running versions 8.45.0 and later, but prior to 2026.3.1, contain a vulnerability that allows bad actors access to data that they ordinarily wouldn't be able to access due to insufficient permission checks and proper...

PT-2026-24121

Name of the Vulnerable Software and Affected Versions Misskey versions prior to 2026.3.1 Description Misskey is a federated social media platform. All servers prior to version 2026.3.1 are susceptible to an issue that allows bypassing HTTP signature verification. This affects all servers, even...

Missing Authentication For Critical Function

Apache ActiveMQ Artemis is vulnerable to Missing Authentication for Critical Function. The vulnerability is due to missing authentication checks in the Core protocol federation mechanism, allowing an unauthenticated attacker to force the broker to establish an outbound connection to a rogue broke...

CVE-2026-29178

Lemmy, a link aggregator and forum for the fediverse, is vulnerable to server-side request forgery via a dependency on activitypubfederation, a framework for ActivityPub federation in Rust. Prior to version 0.19.16, the GET /api/v4/image/filename endpoint is vulnerable to unauthenticated SSRF...

CVE-2026-29178 Lemmy: Unauthenticated SSRF via file_type query parameter injection in image endpoint

Lemmy, a link aggregator and forum for the fediverse, is vulnerable to server-side request forgery via a dependency on activitypubfederation, a framework for ActivityPub federation in Rust. Prior to version 0.19.16, the GET /api/v4/image/filename endpoint is vulnerable to unauthenticated SSRF...

org.apache.artemis:artemis-server: org.apache.activemq:artemis-server: Apache Artemis, Apache ActiveMQ Artemis: Message injection and exfiltration due to missing authentication

A flaw was found in Apache Artemis and Apache ActiveMQ Artemis. An unauthenticated remote attacker can exploit a missing authentication for critical function vulnerability by using the Core protocol. This allows the attacker to force a target broker to establish an outbound Core federation...

Apache Artemis 2.11.0 < 2.45.0 / 2.50.0 < 2.52.0 Missing Authentication (CVE-2026-27446)

The version of Apache Artemis formerly Apache ActiveMQ Artemis installed on the remote host is affected by a vulnerability: - Missing Authentication for Critical Function vulnerability. An unauthenticated remote attacker can use the Core protocol to force a target broker to establish an outbound...

org.apache.artemis:artemis-server: org.apache.activemq:artemis-server: Apache Artemis, Apache ActiveMQ Artemis: Message injection and exfiltration due to missing authentication

A flaw was found in Apache Artemis and Apache ActiveMQ Artemis. An unauthenticated remote attacker can exploit a missing authentication for critical function vulnerability by using the Core protocol. This allows the attacker to force a target broker to establish an outbound Core federation...

GHSA-FW88-PF9M-P947 Apache Artemis and Apache ActiveMQ Artemis are Missing Authentication for Critical Functions

Missing Authentication for Critical Function CWE-306 vulnerability in Apache Artemis, Apache ActiveMQ Artemis. An unauthenticated remote attacker can use the Core protocol to force a target broker to establish an outbound Core federation connection to an attacker-controlled rogue broker. This cou...

EUVD-2026-9382

Missing Authentication for Critical Function CWE-306 vulnerability in Apache Artemis, Apache ActiveMQ Artemis. An unauthenticated remote attacker can use the Core protocol to force a target broker to establish an outbound Core federation connection to an attacker-controlled rogue broker. This cou...

Missing Authentication for Critical Function

Overview org.apache.activemq:artemis-server is a server package for the ActiveMQ-Artemis project. Affected versions of this package are vulnerable to Missing Authentication for Critical Function via the Core protocol implementation. A malicious broker can force a broker to establish an outbound...

Apache Artemis and Apache ActiveMQ Artemis are Missing Authentication for Critical Functions

Missing Authentication for Critical Function CWE-306 vulnerability in Apache Artemis, Apache ActiveMQ Artemis. An unauthenticated remote attacker can use the Core protocol to force a target broker to establish an outbound Core federation connection to an attacker-controlled rogue broker. This cou...

CVE-2026-27446

Missing Authentication for Critical Function CWE-306 vulnerability in Apache Artemis, Apache ActiveMQ Artemis. An unauthenticated remote attacker can use the Core protocol to force a target broker to establish an outbound Core federation connection to an attacker-controlled rogue broker. This cou...

CVE-2026-27446

Missing Authentication for Critical Function CWE-306 vulnerability in Apache Artemis, Apache ActiveMQ Artemis. An unauthenticated remote attacker can use the Core protocol to force a target broker to establish an outbound Core federation connection to an attacker-controlled rogue broker. This cou...

UBUNTU-CVE-2026-27446

Missing Authentication for Critical Function CWE-306 vulnerability in Apache Artemis, Apache ActiveMQ Artemis. An unauthenticated remote attacker can use the Core protocol to force a target broker to establish an outbound Core federation connection to an attacker-controlled rogue broker. This cou...

CVE-2026-27446 Apache Artemis, Apache ActiveMQ Artemis: Auth bypass for Core downstream federation

Missing Authentication for Critical Function CWE-306 vulnerability in Apache Artemis, Apache ActiveMQ Artemis. An unauthenticated remote attacker can use the Core protocol to force a target broker to establish an outbound Core federation connection to an attacker-controlled rogue broker. This cou...