Nuclio is a "Serverless" framework for Real-Time Events and Data Processing. Prior to version 1.15.20, the Nuclio Shell Runtime component contains a command injection vulnerability in how it processes user-supplied arguments. When a function is invoked via HTTP, the runtime reads the X-Nuclio-Arguments header and directly incorporates its value into shell commands without any validation or sanitization. This issue has been patched in version 1.15.20.
CVE-2026-29042
CRITICALNVD 9.89.8
EchelonGraph scoreLOW confidence
This critical-severity CVE scores 9.8 under NVD CVSS v3. EPSS exploit-prediction score not yet available (the EPSS model rescores nightly; freshly-published CVEs typically appear within 48 hours). GitHub Security Advisory data not yet ingested — confidence will rise once GHSA publishes (typical lag: hours to days for open-source ecosystem CVEs; never for infrastructure-only CVEs).
Triggered by: NVD CVSS baseline
Sources: nvd
9.8EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
- High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 2%CVSS: 9.8Exploit: None knownExposed: 0
No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.
- CVSS v3
- 9.8
- EG Score
- 9.8(low)
- EG Risk
- 49(Track)EG Risk 49/100SSVC: Track
EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).
How it’s computedSeverity98% × 45%Exploitation0% × 40%Automatability30% × 15%Action: Routine — remediate on your standard cadence. - EPSS PROB
- 2%
- EPSS %ILE
- 82%
- KEV
- Not listed
Published
March 6, 2026
Last Modified
June 17, 2026
Advisory Details (4)
Auto-updated Jul 27, 2026🔬 Proof of concept available. Patch available. Sources: github_commit, github_pr, github_release, github.
github Patch Available🟡 PoC Available
Nuclio Shell Runtime Command Injection Leading to Privilege Escalation · Advisory · nuclio/nuclio · GitHub
https://github.com/nuclio/nuclio/security/advisories/GHSA-95fj-3w7g-4r27github_release Patch Available
1.15.20
Patch available: nuclio/nuclio 1.15.20
https://github.com/nuclio/nuclio/releases/tag/1.15.20github_pr
[Security] Fix CVE-2026-29042 - OS Command Injection in shell runtime
Fix merged in nuclio/nuclio PR #4030 on 2026-03-04 — awaiting tagged release
https://github.com/nuclio/nuclio/pull/4030github_commit
commit 5352d7e16cf9 (nuclio/nuclio)
Fix landed in nuclio/nuclio commit 5352d7e16cf9 — awaiting tagged release
https://github.com/nuclio/nuclio/commit/5352d7e16cf92f4350a2f8d806c4b80b626b5c5aAffected Packages
(1 across 1 ecosystem)
Go(1)
| Package | Vulnerable range | Fixed in | Dependents |
|---|---|---|---|
| github.com/nuclio/nuclio | — | 1.15.20 | — |
Weakness Classification(1)
MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.
Data Freshness Timeline
(refreshed 5× in last 7d / 5× in last 30d)
Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.
- 2026-08-01 04:16 UTCEPSS rescore
- 2026-07-30 16:27 UTCEPSS rescore
- 2026-07-30 01:30 UTCEPSS rescore
- 2026-07-28 15:36 UTCEPSS rescore
- 2026-07-27 13:49 UTCEG score recompute
Frequently asked(5)
What is CVE-2026-29042?
CVE-2026-29042 is a critical vulnerability published on March 6, 2026. Nuclio is a "Serverless" framework for Real-Time Events and Data Processing. Prior to version 1.15.20, the Nuclio Shell Runtime component contains a command injection vulnerability in how it processes user-supplied arguments. When a function is invoked via HTTP, the runtime reads the…
When was CVE-2026-29042 disclosed?
CVE-2026-29042 was first published in the National Vulnerability Database on March 6, 2026, with the most recent update on June 17, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-29042 actively exploited?
CVE-2026-29042 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 2% probability of exploitation in the next 30 days, which ranks it in the top 18.2% of all scored CVEs.
What is the CVSS score of CVE-2026-29042?
CVE-2026-29042 has a CVSS v3 base score of 9.8 (NVD). The EG score is currently aggregating — additional source signals are being incorporated as they become available..
How do I remediate CVE-2026-29042?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-29042, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.
Dependency Blast Radius
See which npm, PyPI, Go, and Maven packages are affected by CVE-2026-29042
Is Your Infrastructure Affected by CVE-2026-29042?
EchelonGraph automatically scans your cloud infrastructure and maps CVE exposure using blast radius analysis.