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critical vulnerability

Argo CD: AppProject destination-namespace and resource restrictions bypassed by PreDelete/PostDelete resource hooks

Partly patchedCritical · CVSS 9.9EPSS 0.72%

Published Oct 15, 2026 · updated Oct 15, 2026

What to do

  1. Upgrade to a fixed version: github.com/argoproj/argo-cd/v3 3.3.15, github.com/argoproj/argo-cd/v3 3.4.10, github.com/argoproj/argo-cd/v3 3.5.4, github.com/argoproj/argo-cd/v3 3.6.0-rc2.
  2. Some affected packages have no fixed version yet: follow the advisory for mitigations and watch this page for the fix.
  3. Redeploy and restart long-running processes so they load the fixed code.

Affected packages

Gogithub.com/argoproj/argo-cd/v2

Vulnerable versions
>= 2.10.0, <= 2.14.21
Fixed in
no fix yet

Check your project: go list -m all | grep github.com/argoproj/argo-cd/v2

Gogithub.com/argoproj/argo-cd/v3

Vulnerable versions
>= 3.0.0, < 3.3.15
Fixed in
3.3.15

Check your project: go list -m all | grep github.com/argoproj/argo-cd/v3

Gogithub.com/argoproj/argo-cd/v3

Vulnerable versions
>= 3.4.0, < 3.4.10
Fixed in
3.4.10

Check your project: go list -m all | grep github.com/argoproj/argo-cd/v3

Gogithub.com/argoproj/argo-cd/v3

Vulnerable versions
>= 3.5.0, < 3.5.4
Fixed in
3.5.4

Check your project: go list -m all | grep github.com/argoproj/argo-cd/v3

Gogithub.com/argoproj/argo-cd/v3

Vulnerable versions
>= 3.6.0-rc1, < 3.6.0-rc2
Fixed in
3.6.0-rc2

Check your project: go list -m all | grep github.com/argoproj/argo-cd/v3

Sources

CWE-863 Incorrect Authorization

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