Secuno
ENNL
Book demo

CVE-2026-25142

Nyariv Sandboxjs remote code execution

10.0 CRITICALPublic exploitEPSS 1.23%
  1. Published2 Feb 2026

Description

SandboxJS is a JavaScript sandboxing library. Prior to 0.8.27, SanboxJS does not properly restrict __lookupGetter__ which can be used to obtain prototypes, which can be used for escaping the sandbox / remote code execution. This vulnerability is fixed in 0.8.27.

CVSS 3.1 breakdown

Attack vectorNetwork
Attack complexityLow
Privileges requiredNone
User interactionNone
ScopeChanged
ConfidentialityHigh
IntegrityHigh
AvailabilityHigh
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H

Affected products

Nyariv Sandboxjs< 0.8.27

Remediation

Fixed in
Nyariv Sandboxjs≥ 0.8.27

References

Related CVEs

Recent high-severity vulnerabilities sharing a weakness type.

CVE-2026-185378.7
IBM Maximo Application Suite - Location Service for Esri Component 9.2, 9.1, and 9.0 is…
CVE-2021-480128.2
fast-toml through 0.5.4 contains a prototype pollution vulnerability that allows…
CVE-2026-1093088.8
Craft CMS 4.0.0 before 4.18.7 and 5.0.0 before 5.10.14 passes the raw 'updates' request…
CVE-2026-1091998.8
LogicalDOC Community Edition through 9.3 contains a code injection vulnerability that…
CVE-2026-4269610.0
Unauthenticated Remote Code Execution (RCE) in SiteVault – Backup, Restore, Migration…
CVE-2026-398028.1
Unauthenticated Remote Code Execution (RCE) in Everest Backup <= 2.3.13…

Frequently asked

Is CVE-2026-25142 being actively exploited?

CVE-2026-25142 is not in the CISA KEV catalog. A public exploit reference exists, so treat it as exploitable. Its EPSS exploit probability is 1.23%.

How severe is CVE-2026-25142?

CVE-2026-25142 has a CVSS 3.1 base score of 10.0, rated critical. EPSS estimates a 1.23% probability of exploitation.

Which products are affected by CVE-2026-25142?

Affected products include Nyariv Sandboxjs.

How do I fix CVE-2026-25142?

Upgrade affected software to a fixed version, for example Nyariv Sandboxjs 0.8.27 or later, then confirm no affected versions remain in your inventory.

How Secuno handles this

Secuno correlates vulnerabilities like CVE-2026-25142 against the real software inventory on every managed device, every day. Rather than a static severity, each match is scored in context: exploit availability, EPSS, the asset's exposure, and business criticality decide where it lands in the queue. If an affected version is present anywhere across your portfolio, it surfaces automatically with a prioritised remediation path.

See how prioritisation worksBook a demo

Get Patch this first every Monday

Five vulnerabilities that matter this week, ranked on real exploitation. Plain language, one email, no spam.

You can unsubscribe with one click from every issue. We handle your details as described in our privacy policy.

Data from the NVD, CISA KEV catalog and FIRST EPSS. CVSS 3.1 base score shown where available.