CVE-2026-28229: argoproj argo-workflows · Incorrect Authorization
Affects argoproj argo-workflowsSource CVE Database V5
Not known to be exploited · CVSS 9.8 Critical : upgrade to 4.0.2 or 3.7.11 as a priority.
Data as of 30 Oct 2026, 11:52 UTC
- EPSS
- 0.6% chance of exploitation in 30 days – higher than 52% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
- Patch
- Available – fixed in 4.0.2, 3.7.11
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:HExploitation evidence
Disclosed: evidence found.
CVE published 11 Mar 2026
Detectable: no evidence on record.
No public nuclei template indexed
Weaponized: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors
A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 30 Oct 2026.
What to do
Upgrade argo-workflows to 4.0.2 or 3.7.11; argoproj/argo-workflows to 3.7.11.
Affected software
| Product | Affected | Fixed in |
|---|---|---|
| argoprojargo-workflows | Affected
| Fixed in
|
| argoprojargo-workflows | Affected
| Fixed in
|
GitHubargoproj/argo-workflowspkg:github/argoproj/argo-workflowsOther threats | Affected
| Fixed in
|
Check your own hosts for these packages with threat-finder (opens in a new tab), our free open-source scanner.
AI-suggested
A fix is available and users should upgrade to argoproj argo-workflows version 4.0.2 or 3.7.11 or later. The vendor advisory from Red Hat confirms these versions contain the official fix. No additional mitigation steps are indicated beyond applying the official patch.
Description
Argo Workflows is an open source container-native workflow engine for orchestrating parallel jobs on Kubernetes. Prior to 4.0.2 and 3.7.11, Workflow templates endpoints allow any client to retrieve WorkflowTemplates (and ClusterWorkflowTemplates). Any request with a Authorization: Bearer nothing token can leak sensitive template content, including embedded Secret manifests. This vulnerability is fixed in 4.0.2 and 3.7.11.
References
- github.com/argoproj/argo-workflows/security/advisories/GHSA-56px-hm34-xqj5 (opens in a new tab)
- access.redhat.com/security/cve/CVE-2026-28229 (opens in a new tab)
- bugzilla.redhat.com/show_bug.cgi?id=2446549 (opens in a new tab)
- security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-28229.json (opens in a new tab)
- access.redhat.com/errata/RHSA-2026:10184 (opens in a new tab)