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CVE-2026-33249

Опубликовано: 25 мар. 2026
Источник: redhat
CVSS3: 6.4

Описание

NATS-Server is a High-Performance server for NATS.io, a cloud and edge native messaging system. Starting in version 2.11.0 and prior to versions 2.11.15 and 2.12.6, a valid client which uses message tracing headers can indicate that the trace messages can be sent to an arbitrary valid subject, including those to which the client does not have publish permission. The payload is a valid trace message and not chosen by the attacker. Versions 2.11.15 and 2.12.6 contain a fix. No known workarounds are available.

A flaw was found in NATS-Server. A valid client can exploit this flaw by manipulating message tracing headers to redirect trace messages to any valid subject, even those for which the client lacks publish permissions. This allows for unauthorized sending of trace messages, potentially bypassing intended access controls and leading to information misdirection within the NATS.io messaging system.

Меры по смягчению последствий

Mitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base or stability.

Затронутые пакеты

ПлатформаПакетСостояниеРекомендацияРелиз
Multicluster Global Hubmulticluster-globalhub/multicluster-globalhub-grafana-rhel9Fix deferred
Red Hat OpenShift Container Platform 4openshift4/oc-mirror-plugin-rhel9Fix deferred

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Дополнительная информация

Статус:

Moderate
Дефект:
CWE-1220
https://bugzilla.redhat.com/show_bug.cgi?id=2451485github.com/nats-io/nats-server: NATS-Server: Unauthorized trace message redirection via message tracing headers

6.4 Medium

CVSS3

Связанные уязвимости

CVSS3: 4.3
ubuntu
5 месяцев назад

NATS-Server is a High-Performance server for NATS.io, a cloud and edge native messaging system. Starting in version 2.11.0 and prior to versions 2.11.15 and 2.12.6, a valid client which uses message tracing headers can indicate that the trace messages can be sent to an arbitrary valid subject, including those to which the client does not have publish permission. The payload is a valid trace message and not chosen by the attacker. Versions 2.11.15 and 2.12.6 contain a fix. No known workarounds are available.

CVSS3: 4.3
nvd
5 месяцев назад

NATS-Server is a High-Performance server for NATS.io, a cloud and edge native messaging system. Starting in version 2.11.0 and prior to versions 2.11.15 and 2.12.6, a valid client which uses message tracing headers can indicate that the trace messages can be sent to an arbitrary valid subject, including those to which the client does not have publish permission. The payload is a valid trace message and not chosen by the attacker. Versions 2.11.15 and 2.12.6 contain a fix. No known workarounds are available.

CVSS3: 4.3
debian
5 месяцев назад

NATS-Server is a High-Performance server for NATS.io, a cloud and edge ...

CVSS3: 4.3
github
5 месяцев назад

NATS: Message tracing can be redirected to arbitrary subject

6.4 Medium

CVSS3