CVE-2021-41123Network attack vector

Aggregate metrics disclosure via default-enabled endpoint

Published Oct 4, 2021 · Updated Aug 4, 2024

Information exposure in Survey Solutions 21.09 and earlier allows remote attackers to read aggregate operational counters without authentication. The Headquarters configuration enables UseMetricsEndpoint by default, causing /metrics to answer every request with operational data. Exposure requires network access to Headquarters and is limited to aggregate interview and assignment counts, not survey answers.

CVSS severity5.3
Medium
EPSS probability0.88%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Information exposure in Survey Solutions 21.09 and earlier allows remote attackers to read aggregate operational counters without authentication. The Headquarters configuration enables UseMetricsEndpoint by default, causing /metrics to answer every request with operational data. Exposure requires network access to Headquarters and is limited to aggregate interview and assignment counts, not survey answers.

The record

CVE
CVE-2021-41123
Published
Oct 4, 2021
Updated
Aug 4, 2024
Vendor
World Bank
Product
Survey Solutions
Classifications
CWE-200
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Oct 4, 2021CVE publishedPublication date reported by the CVE source.
  2. Aug 4, 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=< 21.09.1

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

World Bank · Survey Solutionsversion=< 21.09.1

Published CVSS scores

5.3GitHubCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
5.0NIST NVDAV:N/AC:L/Au:N/C:P/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.

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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
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-200Exposure of Sensitive Information to an Unauthorized Actor

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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