Nuclio: Unauthenticated path traversal in spec.handler allows arbitrary file write in Dashboard container
Priority MEDIUM 56CWE-22Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- High
- User interaction
- None
- Attack complexity
- Low
- Impact type
- —
- Confidentiality · integrity · availability
- None · High · None
- Fix status
- Fixed
Attack profile from CVSS 3.1 · CNA. Fix status from CNA and GitHub.
Summary
Nuclio is a "Serverless" framework for Real-Time Events and Data Processing. Prior to version 1.16.5, Nuclio Dashboard exposes POST /api/functions without authentication by default (NOP auth mode). The spec.handler field (e.g., mymodule:myfunction) is parsed by functionconfig.ParseHandler() which splits on : only — no path validation is applied to the module portion. This issue has been patched in version 1.16.5.
Why it matters now
Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.00557 46th percentileScored 2026-11-07
Fix Fixed nuclio (nuclio): 1.16.5github.com/nuclio/nuclio (Go): 1.16.5
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- Poc
- Automatable
- No
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| nuclio | nuclio | before 1.16.5 | 1.16.5 | Patch available | CNA |
| — | github.com/nuclio/nuclio (Go) | before 1.16.5 | 1.16.5 | Patch available | GHSA-wpcj-rmv4-86qg |
- nuclio Vendornuclio Affected before 1.16.5 Fixed in 1.16.5 Patch available CNA
- github.com/nuclio/nuclio (Go) Vendor— Affected before 1.16.5 Fixed in 1.16.5 Patch available GHSA-wpcj-rmv4-86qg
Remediation
- Fix · CNA nuclio (nuclio) Fixed in 1.16.5
- Fix · GHSA-wpcj-rmv4-86qg github.com/nuclio/nuclio (Go) Fixed in 1.16.5 Advisory →
Timeline
- 2026-10-02 Threatist record created from CVE-2026-52832
- 2026-10-03 Alias added: GHSA-wpcj-rmv4-86qg
References
More nuclio vulnerabilities
- TI-2026-55234 Nuclio: Unauthenticated OS command injection via function namespace in docker ps --filter label (local Docker platform) CVSS 3.1HIGH 8.0
- TI-2026-37941 Nuclio: Unsanitized runtimeAttributes.repositories injected into Groovy build.gradle leads to build-time RCE CVSS 3.1HIGH 8.0
- TI-2026-33468 Nuclio: Missing authorization on project write paths allows any authenticated user to modify or delete any project CVSS 3.1HIGH 8.3
- TI-2026-55233 Nuclio: Kaniko build tempDir command injection CVSS 4.0HIGH 7.1
- TI-2026-55235 Nuclio: Unauthenticated OS command injection via namespace header in list-all resource path on local platform CVSS 4.0HIGH 8.7
- TI-2026-37939 Nuclio: Unsanitized cron trigger event headers/body injected into CronJob shell command leads to persistent RCE CVSS 3.1HIGH 8.0
Sources
- CVE-2026-52832 · CVE Program
- CVE-2026-52832 · NVD
- FIRST EPSS
- GHSA-wpcj-rmv4-86qg · GitHub Advisory Database · CC BY 4.0
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