CVE-2026-0863

Exploitation

Public exploit code exists. CISA's assessment records a public proof of concept. That is not a report of exploitation in the wild.

SSVC decision

• ExploitationpocPublic proof-of-concept exploit code exists. Not a report of exploitation in the wild.
• AutomatablenoAt least one step from reconnaissance to exploitation cannot be reliably automated.
• Technical ImpacttotalSuccessful exploitation gives total control of the vulnerable component.

CISA publishes the decision points, not a final SSVC decision. The decision also depends on mission and well-being impact, which is a property of your deployment rather than of the vulnerability.

EPSS probability

8.64% probability of exploitation activity in the next 30 days.

EPSS percentile

Ranks above 94.7% of scored records. A rank, not a probability.

NVD base score

9.9 (CVSS v3.x), scored by the NVD independently of the CNA.

NVD CVSS vector

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H

NVD analysis status

Analyzed. NVD last modified this record on 2026-06-17.

Red Hat severity

No Red Hat rating. Red Hat rates the CVEs that affect its products.

Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.

Published

2026-01-18 15:37Z7 MO AGO

Last updated

2026-01-23 17:58Z7 MO AGO

Reserved

2026-01-12

Assigning CNA

JFROG

Record state

PUBLISHED

Severity

High (CVSS 8.5)

CNA CVSS vector

CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H

Weaknesses

• CWE-95Improper Neutralization of Directives in Dynamically Evaluated Code ('Eval Injection')Variant
• CWE-94Improper Control of Generation of Code ('Code Injection')Base

Data version

5.2

Document digest

b3e97faf07ff1824156bac57d771a0e3dfe4011aa2b29cae96d1d654bddcb25d

• research.jfrog.comhttps://research.jfrog.com/vulnerabilities/n8n-python-runner-sandbox-escape-jfsa-2026-001651077/third-party-advisory
• github.comhttps://github.com/n8n-io/n8n/commit/b73a4283cb14e0f27ce19692326f362c7bf3da02patch
• www.smartkeyss.comhttps://www.smartkeyss.com/post/cve-2026-0863-python-sandbox-escape-in-n8n-via-exception-formatting-and-implicit-code-execution