Machine-written summary
Summary written by Claude Haiku from the source advisory. Not reviewed by a person.
Argo CD (github.com/argoproj/argo-cd/v3) versions 3.2.0 before 3.2.11 and 3.3.0 before 3.3.9 are affected. An authenticated user with read-only Argo CD access, such as the default catch-all role, can call the ServerSideDiff endpoint to obtain plaintext Kubernetes Secret data, including tokens, certificates and credentials. This applies to Applications with the IncludeMutationWebhook=true compare option, and the source says extraction works only when a non-Argo CD field manager owns the Secret's data fields. Upgrade to version 3.2.11 or 3.3.9.
Not analysed yet
We haven’t published our analysis of this Advisory yet. Once a person has reviewed it, this page will say what’s vulnerable, what has to be true for your app to be affected, and how to check.
Severity and exploitation
| Score | Rating | CVSS | Vector | Source |
|---|---|---|---|---|
| 9.6 | Critical | 3.1 | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:N | CNA (GitHub_M) |
- CISA KEV Not listed.
- EPSS 0.0065, the 51st percentile, on 5 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.
Timeline
- 31 Oct 2026, 14:11 UTC First seen by agentprime
- 31 Oct 2026, 14:11 UTC Confirmed by OSV