CVE-2026-25587CRITICAL 10.0EPSS p46.0%

CVE-2026-25587CVE-2026-25587

Description

SandboxJS is a JavaScript sandboxing library. Prior to 0.8.29, as Map is in SAFE_PROTOYPES, it's prototype can be obtained via Map.prototype. By overwriting Map.prototype.has the sandbox can be escaped. This vulnerability is fixed in 0.8.29.

Scoring

CVSS 3.110.0 (CRITICAL)
VectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
EPSS0.65% probability of exploitation · percentile 46.0% · 2026-06-19T12:03:05Z
Published2026-02-06
Last modified2026-02-18

Underlying weaknesses· 1

CWE-94

References

  1. https://github.com/nyariv/SandboxJS/commit/67cb186c41c78c51464f70405504e8ef0a6e43c3
  2. https://github.com/nyariv/SandboxJS/security/advisories/GHSA-66h4-qj4x-38xp
  3. https://github.com/nyariv/SandboxJS/security/advisories/GHSA-66h4-qj4x-38xp

1

TypeTargetConfidenceTier
WeaknessImproper Control of Generation of Code ('Code Injection')cwe-940%live

Related by meaning· 6

Nearest entities by semantic similarity across the cs-graph corpus.

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Sourced from NVD + FIRST.org EPSS. Curated for EU compliance use cases by Adam Lundqvist, Founder at SQUR.