# Nyariv Sandboxjs vulnerabilities

Source: https://junglewise.ai/threats/technologies/sandboxjs  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Updated: 9 November 2026, 03:07 UTC. Rebuilt every hour.  
Data: https://junglewise.ai/threats/technologies/sandboxjs.json  
License: CC BY 4.0 with a link back

Junglewise Threat Intelligence has tracked 12 vulnerabilities in Nyariv Sandboxjs: 0 in the last 7 days and 0 in the last 90 days, 2 of them critical and 0 exploited in the wild. The most recent, CVE-2026-43898, was published on 28 May 2026.

## Counts

- Last 7 days: 0
- Last 30 days: 0
- Last 90 days: 0
- All time: 12 (2 critical, 0 exploited in the wild)

## About Nyariv Sandboxjs

JavaScript library for executing untrusted JavaScript code in a sandboxed environment.

## Latest Nyariv Sandboxjs vulnerabilities

- [CVE-2026-43898: nyariv SandboxJS sandbox escape via Function.caller leakage](https://junglewise.ai/threats/cve-2026-43898-nyariv-sandboxjs-sandbox-escape-via-function-caller-leakage) (critical, CVSS 10, published 28 May 2026)
- [CVE-2026-34217: SandboxJS sandbox escape via Prop object leak in new handler](https://junglewise.ai/threats/cve-2026-34217-sandboxjs-sandbox-escape-via-prop-object-leak-in-new-handler) (high, CVSS 7.2, published 6 Apr 2026)
- [CVE-2026-34211: SandboxJS stack overflow via deeply nested expressions](https://junglewise.ai/threats/cve-2026-34211-sandboxjs-stack-overflow-via-deeply-nested-expressions) (high, CVSS 7.5, published 6 Apr 2026)
- [CVE-2026-34208: SandboxJS sandbox integrity escape via constructor manipulation](https://junglewise.ai/threats/cve-2026-34208-nyariv-sandboxjs-sandbox-integrity-escape-via-constructor-bypass) (critical, CVSS 10, published 6 Apr 2026)
- [CVE-2026-32723: SandboxJS execution-quota bypass in timers](https://junglewise.ai/threats/cve-2026-32723-sandboxjs-execution-quota-bypass-in-timers) (medium, CVSS 4, published 16 Mar 2026)
- [CVE-2026-26954: SandboxJS sandbox escape allowing remote code execution](https://junglewise.ai/threats/cve-2026-26954-sandboxjs-sandbox-escape-allowing-remote-code-execution) (low, CVSS 3.1, published 13 Mar 2026)
- [CVE-2026-25881: nyariv SandboxJS sandbox escape via prototype pollution](https://junglewise.ai/threats/cve-2026-25881-nyariv-sandboxjs-sandbox-escape-via-prototype-pollution) (low, CVSS 3.1, published 10 Feb 2026)
- [CVE-2026-25586: nyariv sandboxjs sandbox escape via prototype whitelist bypass](https://junglewise.ai/threats/cve-2026-25586-nyariv-sandboxjs-sandbox-escape-via-prototype-whitelist-bypass) (low, CVSS 3.1, published 5 Feb 2026)
- [CVE-2026-25520: nyariv sandboxjs sandbox escape to RCE](https://junglewise.ai/threats/cve-2026-25520-nyariv-sandboxjs-sandbox-escape-to-rce) (low, CVSS 3.1, published 5 Feb 2026)
- [CVE-2026-25142: SandboxJS prototype pollution vulnerability leading to sandbox escape and RCE](https://junglewise.ai/threats/cve-2026-25142-sandboxjs-prototype-pollution-vulnerability-leading-to-sandbox) (low, CVSS 3.1, published 2 Feb 2026)
- [CVE-2026-23830: SandboxJS sandbox escape via unprotected AsyncFunction constructor](https://junglewise.ai/threats/cve-2026-23830-sandboxjs-sandbox-escape-via-unprotected-asyncfunction) (low, CVSS 3.1, published 27 Jan 2026)
- [CVE-2025-34146: nyariv SandboxJS prototype pollution and sandbox escape](https://junglewise.ai/threats/cve-2025-34146-nyariv-sandboxjs-prototype-pollution-and-sandbox-escape) (medium, CVSS 4, published 31 Jul 2025)

## Most severe Nyariv Sandboxjs vulnerabilities

- [CVE-2026-43898: nyariv SandboxJS sandbox escape via Function.caller leakage](https://junglewise.ai/threats/cve-2026-43898-nyariv-sandboxjs-sandbox-escape-via-function-caller-leakage) (critical, CVSS 10, published 28 May 2026)
- [CVE-2026-34208: SandboxJS sandbox integrity escape via constructor manipulation](https://junglewise.ai/threats/cve-2026-34208-nyariv-sandboxjs-sandbox-integrity-escape-via-constructor-bypass) (critical, CVSS 10, published 6 Apr 2026)
- [CVE-2026-34211: SandboxJS stack overflow via deeply nested expressions](https://junglewise.ai/threats/cve-2026-34211-sandboxjs-stack-overflow-via-deeply-nested-expressions) (high, CVSS 7.5, published 6 Apr 2026)
- [CVE-2026-34217: SandboxJS sandbox escape via Prop object leak in new handler](https://junglewise.ai/threats/cve-2026-34217-sandboxjs-sandbox-escape-via-prop-object-leak-in-new-handler) (high, CVSS 7.2, published 6 Apr 2026)
- [CVE-2025-34146: nyariv SandboxJS prototype pollution and sandbox escape](https://junglewise.ai/threats/cve-2025-34146-nyariv-sandboxjs-prototype-pollution-and-sandbox-escape) (medium, CVSS 4, published 31 Jul 2025)
- [CVE-2026-32723: SandboxJS execution-quota bypass in timers](https://junglewise.ai/threats/cve-2026-32723-sandboxjs-execution-quota-bypass-in-timers) (medium, CVSS 4, published 16 Mar 2026)
- [CVE-2026-23830: SandboxJS sandbox escape via unprotected AsyncFunction constructor](https://junglewise.ai/threats/cve-2026-23830-sandboxjs-sandbox-escape-via-unprotected-asyncfunction) (low, CVSS 3.1, published 27 Jan 2026)
- [CVE-2026-25142: SandboxJS prototype pollution vulnerability leading to sandbox escape and RCE](https://junglewise.ai/threats/cve-2026-25142-sandboxjs-prototype-pollution-vulnerability-leading-to-sandbox) (low, CVSS 3.1, published 2 Feb 2026)
- [CVE-2026-25520: nyariv sandboxjs sandbox escape to RCE](https://junglewise.ai/threats/cve-2026-25520-nyariv-sandboxjs-sandbox-escape-to-rce) (low, CVSS 3.1, published 5 Feb 2026)
- [CVE-2026-25586: nyariv sandboxjs sandbox escape via prototype whitelist bypass](https://junglewise.ai/threats/cve-2026-25586-nyariv-sandboxjs-sandbox-escape-via-prototype-whitelist-bypass) (low, CVSS 3.1, published 5 Feb 2026)

## Vulnerabilities per week

Nothing was published in the last eight weeks.

| Week of | Vulns | Critical | Exploited |
| --- | --- | --- | --- |
| 17 Aug 2026 | 0 | 0 | 0 |
| 24 Aug 2026 | 0 | 0 | 0 |
| 31 Aug 2026 | 0 | 0 | 0 |
| 7 Sep 2026 | 0 | 0 | 0 |
| 14 Sep 2026 | 0 | 0 | 0 |
| 21 Sep 2026 | 0 | 0 | 0 |
| 28 Sep 2026 | 0 | 0 | 0 |
| 5 Oct 2026 | 0 | 0 | 0 |
| 12 Oct 2026 | 0 | 0 | 0 |
| 19 Oct 2026 | 0 | 0 | 0 |
| 26 Oct 2026 | 0 | 0 | 0 |
| 2 Nov 2026 | 0 | 0 | 0 |
| 9 Nov 2026 | 0 | 0 | 0 |

## Sources

NVD, GitHub Security Advisories, OSV, the CISA Known Exploited Vulnerabilities catalog, FIRST EPSS and vendor advisories. Rebuilt every hour. Cite as: Junglewise Threat Intelligence, "Nyariv Sandboxjs vulnerabilities", https://junglewise.ai/threats/technologies/sandboxjs, 9 November 2026.