CVE-2022-32559Network attack vector

Node failure via unbounded HTTP metric creation

Published Jun 14, 2022 · Updated Aug 3, 2024

Resource exhaustion in Couchbase Server 7.0.0 through 7.0.3 allows remote attackers to crash a node via unauthenticated REST requests. The cluster manager creates a new metric for every previously unseen HTTP request without limiting metric cardinality, consuming memory and disk. Sustained unauthenticated requests are required to exhaust resources; the documented consequence is failure of the targeted node.

CVSS severity9.1
Critical
EPSS probability1.31%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Resource exhaustion in Couchbase Server 7.0.0 through 7.0.3 allows remote attackers to crash a node via unauthenticated REST requests. The cluster manager creates a new metric for every previously unseen HTTP request without limiting metric cardinality, consuming memory and disk. Sustained unauthenticated requests are required to exhaust resources; the documented consequence is failure of the targeted node.

The record

CVE
CVE-2022-32559
Published
Jun 14, 2022
Updated
Aug 3, 2024
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-770, T1499.003
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jun 14, 2022CVE publishedPublication date reported by the CVE source.
  2. Aug 3, 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 privilegesunauthenticated

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

9.1NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H
6.4NIST NVDAV:N/AC:L/Au:N/C:P/I:N/A:P

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

Weakness, pattern, technique

CWE-770Allocation of Resources Without Limits or Throttling
T1499.003Application Exhaustion Flood

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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