---
cve: "CVE-2026-93991"
severity: "HIGH"
cvss: 8.3
epss: "26.3%"
vendor: "argoproj"
kev: false
exploited: false
published: "2026-09-19 23:17:10"
tags: [cve, security, high]
source: tsecurity.de CVE-Dossier
exported: "2026-09-21T00:00:25+02:00"
---

# CVE-2026-93991

> 8.3 HIGH · 🧪 PoC

## Beschreibung

Argo Workflows versions 4.1.0 through 4.1.3 contain an authorization bypass vulnerability in ListArchivedWorkflows that fails to apply cluster-scoped access review when the metadata.namespace field selector uses the NotEquals operator. Attackers with namespace-scoped list permissions can use a negated namespace field selector to retrieve archived workflows from all other namespaces, exposing spec arguments, parameter values, and annotations.

## CVSS-Vektor

```
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/SC:H/SI:N/SA:N
```

| Metrik | Wert | Bewertung |
|---|---|---|
| AV Angriffsvektor | Netzwerk | bad |
| AC Komplexität | Gering | bad |
| PR Privilegien | Gering | warn |
| UI Interaktion | Keine | bad |

## Patch verfügbar (OSV)

- 5fdad0fe6f6d740c55d8289f26c912ab711ca407 (Commit)
- a40972386c097ddf816d2e60e13f058bedca53d9 (Commit)

## Referenzen

- <https://github.com/argoproj/argo-workflows/security/advisories/GHSA-q65w-j2vp-47c4>
- <https://github.com/argoproj/argo-workflows/commit/a40972386c097ddf816d2e60e13f058bedca53d9>
- <https://github.com/argoproj/argo-workflows/releases/tag/v4.1.4>
- <https://github.com/argoproj/argo-workflows>
- <https://www.vulncheck.com/advisories/argo-workflows-4.1.0-through-4.1.3-cross-namespace-disclosure-via-negated-selector>

---
_Exportiert aus dem [tsecurity.de CVE-Dossier](https://tsecurity.de/cve?cve=CVE-2026-93991) · Datenquellen: EUVD (ENISA), NVD, OSV, CISA KEV, FIRST EPSS, Exploit-DB, BSI BITS_