CVE-2026-93991 json
Argo Workflows 4.1.0 through 4.1.3 Cross-Namespace Disclosure via Negated Selector
published 2026-09-19 50 d ago modified 2026-09-29 40 d ago also BIT-argo-workflows-2026-93991 , EUVD-2026-83619 , GHSA-q65w-j2vp-47c4
- cvss
- 7.7
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.4%
- EPSS 0.4% chance of exploitation in 30 days, percentile 38%
- public exploits
- 0
- none known
Summary
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.
Patch / fix
- bitnami argo-workflows 4.1.4
- argoproj argo-workflows 4.1.4
CISA SSVC
- Exploitation
- none
- Automatable
- no
- Technical impact
- partial
- Assessed
- 48 d ago
Exploit prediction
0.44% chance of exploitation in the next 30 days, higher than 38% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 4.0 | 8.3 | 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 |
| CNA | 3.1 | 7.7 | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N |
| CNA | 4.0 | 8.3 | 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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X |
Affected packages
| ecosystem | package | affected | fixed in |
|---|---|---|---|
| bitnami | argo-workflows | >=4.1.0, <4.1.4 |
4.1.4 |
Affected products
- argoproj argo-workflows
Classification
- Weakness
-
- CWE-639 Authorization Bypass Through User-Controlled Key
References
-
github.com
/argoproj/argo-workflows/commit/a40972386c097ddf816d2e60e13f058bedca53d9
patch, web
-
github.com
/argoproj/argo-workflows/security/advisories/GHSA-q65w-j2vp-47c4
vendor-advisory, web
-
github.com
/argoproj/argo-workflows/releases/tag/v4.1.4
release-notes, web
-
github.com
/argoproj/argo-workflows
product, web
-
vulncheck.com
/advisories/argo-workflows-4.1.0-through-4.1.3-cross-namespace-disclosure-via-negated-selector
third-party-advisory, web
-
nvd.nist.gov
/vuln/detail/CVE-2026-93991
web
Sources
- CVE List CVE-2026-93991
- NVD CVE-2026-93991
- OSV BIT-argo-workflows-2026-93991
Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.
CPEs and fixed versions use Anchore's correction of NVD's data: Added CPE configurations because not yet analyzed by NVD.