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CVE-2026-34156

78
FAUCET Score

CVE-2026-34156 describes a critical sandbox escape vulnerability in NocoBase versions prior to 2.0.28, an AI-powered no-code/low-code platform. Rated 9.9 CRITICAL, this flaw allows an authenticated attacker with low privileges to exploit the Workflow Script Node's vm sandbox by traversing the prototype chain via exposed console objects. This enables Remote Code Execution as root, leading to complete system compromise with low attack complexity and no user interaction required. While there is no evidence of active exploitation or public exploit code available, the vulnerability has garnered significant community discussion due to its severe impact.

Impacted Technologies

VendorProductVersion(s)CPE
< 2.0.28CPE matchmatch criteria
cpe:2.3:a:nocobase:nocobase:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

9.9CRITICAL

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
CHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
3.1
Impact Score
6.0
CvssVersion
3.1

Exploit Intelligence

EPSS Score
36.50%
Probability of exploitation in next 30 days
EPSS Percentile
98.3%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
Nuclei: CVE-2026-34156 · Mar 31, 2026
ExploitDB: EDB-52552 · May 7, 2026
This CVE's current EPSS score of 0.3650 is in the 98th percentile among its peer group of 1,124 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 1.0 Bluesky, 0.5 Mastodon, and 1.6 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (2)

github_advisorypatch availablevia nvd_reference
View patch
npmpatch availablevia ghsa
Product: @nocobase/plugin-workflow-javascriptFixed in: 2.0.28

Vendor Advisories (1)

npmGHSA-px3p-vgh9-m57ccritical

NocoBase Affected by Sandbox Escape to RCE via console._stdout Prototype Chain Traversal in Workflow Script Node

Mar 30, 2026

References

github.com / nocobase/nocobase/pull/8967
Issue TrackingPatch
github.com / nocobase/nocobase/releases/tag/v2.0.28
ProductRelease Notes
github.com / nocobase/nocobase/security/advisories/GHSA-px3p-vgh9-m57c
ExploitMitigationVendor Advisory