CVE-2026-45737Public exploitNetwork attack vector

Secret disclosure via incomplete ServerSideDiff annotation sanitization

Published Jul 15, 2026 · Updated Jul 15, 2026

Information disclosure in Argo CD 3.2.0 through 3.2.11, 3.3.9, and 3.4.1 allows remote authenticated users to read Kubernetes Secrets. HideSecretData sanitizes the live argument but can leave kubectl.kubernetes.io/last-applied-configuration unmasked in a predicted live Secret returned by ServerSideDiff. Exploitation requires permission to view application diffs and a Secret previously written through client-side apply; the disclosed values can include data, stringData, and sensitive annotations.

CVSS severity6.3
Medium
EPSS probability0.52%
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 3.2.0 through 3.2.11, 3.3.9, and 3.4.1 allows remote authenticated users to read Kubernetes Secrets. HideSecretData sanitizes the live argument but can leave kubectl.kubernetes.io/last-applied-configuration unmasked in a predicted live Secret returned by ServerSideDiff. Exploitation requires permission to view application diffs and a Secret previously written through client-side apply; the disclosed values can include data, stringData, and sensitive annotations.

The record

CVE
CVE-2026-45737
Published
Jul 15, 2026
Updated
Jul 15, 2026
Vendor
Argo Project
Product
Argo CD
Classifications
CWE-212, CWE-200, T1552.007
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Jul 15, 2026CVE publishedPublication date reported by the CVE source.
  2. Jul 15, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

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

  1. Affected versionversion=>= 3.2.0, < 3.2.12
  2. Affected versionversion=>= 3.3.9, < 3.3.10
  3. Affected versionversion=>= 3.4.1, < 3.4.2

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Argo Project · Argo CDversion=>= 3.2.0, < 3.2.12; version=>= 3.3.9, < 3.3.10; version=>= 3.4.1, < 3.4.2

Published CVSS scores

6.5NVDCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
6.3GitHub CNACVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/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 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 exploitPublished

Weakness, pattern, technique

CWE-212Improper Removal of Sensitive Information Before Storage or Transfer
CWE-200Exposure of Sensitive Information to an Unauthorized Actor
T1552.007Unsecured Credentials Container API

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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