CVE-2022-29946Network attack vector

Authenticated denied-subject access via wildcard queue subscription

Published Jul 11, 2024 · Updated Oct 30, 2024

Incorrect authorization in NATS Server before 2.8.2 and Streaming Server before 0.24.6 allows remote authenticated users to read denied messages. When a positive subscription ACL covers a wildcard and a negative ACL excludes a matching subject, the queue-subscriber path omits the implicit filter needed to suppress that subject. A valid user who can create a queue subscription on the allowed wildcard can therefore receive messages from the explicitly denied subject; direct subscriptions remain blocked.

CVSS severity7.1
High
EPSS probability0.48%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Incorrect authorization in NATS Server before 2.8.2 and Streaming Server before 0.24.6 allows remote authenticated users to read denied messages. When a positive subscription ACL covers a wildcard and a negative ACL excludes a matching subject, the queue-subscriber path omits the implicit filter needed to suppress that subject. A valid user who can create a queue subscription on the allowed wildcard can therefore receive messages from the explicitly denied subject; direct subscriptions remain blocked.

The record

CVE
CVE-2022-29946
Published
Jul 11, 2024
Updated
Oct 30, 2024
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-863
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Jul 11, 2024CVE publishedPublication date reported by the CVE source.
  2. Oct 30, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Affected buildAffected product and version details are unavailable.

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

7.1GitHub Advisory DatabaseCVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N
6.3CISA-ADPCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-863Incorrect Authorization

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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