CVE-2018-21034Network attack vector

Authenticated secret disclosure via unredacted manifests

Published Apr 9, 2020 · Updated Aug 5, 2024

Information disclosure in Argo CD before 1.5.0-rc1 allows remote authenticated users to read Git-stored Kubernetes secrets through API calls. The GetManifests API path returned Git-generated Secret manifests directly instead of passing each Kubernetes Secret object through HideSecretData. Exploitation requires an authenticated Argo CD account and discloses stored secret values and other manifest content that the account is not authorized to view.

CVSS severity6.5
Medium
EPSS probability1.37%
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 Argo CD before 1.5.0-rc1 allows remote authenticated users to read Git-stored Kubernetes secrets through API calls. The GetManifests API path returned Git-generated Secret manifests directly instead of passing each Kubernetes Secret object through HideSecretData. Exploitation requires an authenticated Argo CD account and discloses stored secret values and other manifest content that the account is not authorized to view.

The record

CVE
CVE-2018-21034
Published
Apr 9, 2020
Updated
Aug 5, 2024
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-200, T1213
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Apr 9, 2020CVE publishedPublication date reported by the CVE source.
  2. Aug 5, 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

4.0NISTAV:N/AC:L/Au:S/C:P/I:N/A:N
6.5GitHubCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/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-200Exposure of Sensitive Information to an Unauthorized Actor
T1213Data from Information Repositories

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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