CVE-2022-3867Network attack vector

Post-expiry event disclosure via stale stream authorization

Published Nov 10, 2022 · Updated May 1, 2025

Information disclosure in HashiCorp Nomad 1.4.0 through 1.4.1 allows remote authenticated users to read events after token expiry. The event-stream publisher authorizes an ACL token only when the subscription opens, so an existing stream continues delivering cluster changes until token garbage collection. An attacker needs an expiring ACL token and event-topic permission; the flaw extends read access without reported write or service-interruption impact.

CVSS severity2.7
Low
EPSS probability0.49%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Information disclosure in HashiCorp Nomad 1.4.0 through 1.4.1 allows remote authenticated users to read events after token expiry. The event-stream publisher authorizes an ACL token only when the subscription opens, so an existing stream continues delivering cluster changes until token garbage collection. An attacker needs an expiring ACL token and event-topic permission; the flaw extends read access without reported write or service-interruption impact.

The record

CVE
CVE-2022-3867
Published
Nov 10, 2022
Updated
May 1, 2025
Vendor
HashiCorp
Product
Nomad
Classifications
CWE-613
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Nov 10, 2022CVE publishedPublication date reported by the CVE source.
  2. May 1, 2025Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=1.4.0
  2. Affected versionversion=1.4.1

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

HashiCorp · Nomadversion=1.4.0; version=1.4.1
HashiCorp · Nomad Enterpriseversion=1.4.0; version=1.4.1

Published CVSS scores

4.3NISTCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N
2.7HashiCorp Inc.CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:L/I:N/A:N

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.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-613Insufficient Session Expiration

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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