CVE-2022-22979Public exploitNetwork attack vector

Application crash via unsynchronized function lookup

Published Jun 21, 2022 · Updated Aug 3, 2024

Denial of service in Spring Cloud Function 3.2.5 and earlier allows remote attackers to crash web applications through function lookups. FunctionCatalog lookup performs concurrent discovery and registration without synchronizing on the requested definition, allowing repeated requests to accumulate duplicate registrations. The flaw is remotely reachable only when spring-cloud-function-web exposes the lookup path; exploitation interrupts the application without reported data access or modification.

CVSS severity7.5
High
EPSS probability1.40%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Denial of service in Spring Cloud Function 3.2.5 and earlier allows remote attackers to crash web applications through function lookups. FunctionCatalog lookup performs concurrent discovery and registration without synchronizing on the requested definition, allowing repeated requests to accumulate duplicate registrations. The flaw is remotely reachable only when spring-cloud-function-web exposes the lookup path; exploitation interrupts the application without reported data access or modification.

The record

CVE
CVE-2022-22979
Published
Jun 21, 2022
Updated
Aug 3, 2024
Vendor
Spring
Product
Spring Cloud Function
Classifications
CWE-770, T1499.004
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jun 21, 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?

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

  1. Affected versionversion=Spring Cloud Function (prior to 3.2.6)

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Spring · Spring Cloud Functionversion=Spring Cloud Function (prior to 3.2.6)

Published CVSS scores

7.5GitHub Advisory DatabaseCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
5.0NVDAV:N/AC:L/Au:N/C:N/I:N/A:P
7.5NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

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 exploitPublished

Weakness, pattern, technique

CWE-770Allocation of Resources Without Limits or Throttling
T1499.004Endpoint Denial of Service Application or System Exploitation

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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