CVE-2021-43201Network attack vector

Unauthorized settings inheritance from deleted projects

Published Nov 9, 2021 · Updated Aug 4, 2024

Integrity issue in JetBrains TeamCity before 2021.1.3 allows attackers able to create projects to inherit settings from deleted projects. During project creation, TeamCity can reuse configuration belonging to an already deleted project instead of isolating the new project. The effect requires project-creation access and can expose or alter project behavior through unintended settings inheritance; the public advisory does not document broader code execution or availability impact.

CVSS severity5.0
Medium
EPSS probability0.71%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Integrity issue in JetBrains TeamCity before 2021.1.3 allows attackers able to create projects to inherit settings from deleted projects. During project creation, TeamCity can reuse configuration belonging to an already deleted project instead of isolating the new project. The effect requires project-creation access and can expose or alter project behavior through unintended settings inheritance; the public advisory does not document broader code execution or availability impact.

The record

CVE
CVE-2021-43201
Published
Nov 9, 2021
Updated
Aug 4, 2024
Vendor
Unknown vendor
Product
Unknown product
Classifications
Unavailable
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Nov 9, 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?

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

5.3NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
5.0NVDAV:N/AC:L/Au:N/C:N/I:P/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
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

No sourced classifications are available.

Public exploit references

No public exploit references are available in this record.

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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