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» GHSA-ww6v-677g-p656
Description
Affected versions of safe-eval are vulnerable to a sandbox escape. By accessing object constructors, un-sanitized user input can access the entire standard library and effectively break out of the sandbox.
Proof of Concept:
This code accesses the process object and calls .exit()
var safeEval = require('safe-eval');
safeEval("this.constructor.constructor('return process')().exit()");
Recommendation
Update to version 0.4.0 or later
Basic information
Type
reviewed
Severity
critical Advisory on GitHub
Open advisory ↗ Repository advisory
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Source code
Not specified Published (advisory)
2018-07-18 18:28:10 UTC
Updated
2023-09-11 22:19:20 UTC
GitHub reviewed
2020-06-16 22:01:17 UTC
EPSS Score
Score
Percentile
2.06%
83.50%
CVSS Scores
Base score
Version
Severity
Vector
10.0
3.0
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CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
Click to expand
Attack vector (AV:N)
Could be attacked over the internet or any normal routed network—not just someone sitting at the machine.
Attack complexity (AC:L)
Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup.
Privileges required (PR:N)
No account or special rights needed—anonymous or random user is enough.
User interaction (UI:N)
Nobody has to click “OK” or open a trap file; it can work without a victim helping.
Scope (S:C)
Breaking this can reach past the original component and bite other resources—bigger blast radius.
Confidentiality (C:H)
Serious risk that confidential data gets exposed in a big way.
Integrity (I:H)
They could widely tamper with or forge data—trust in the data is badly hurt.
Availability (A:H)
Could take the service down hard or make it unusable for people who depend on it.
CWEs
CWE id
Name
CWE-610
Externally Controlled Reference to a Resource in Another Sphere
Affected packages (1)
Vulnerable version ranges and first patched releases as published by GitHub.
Ecosystem
Package
Vulnerable range
First patched
Vulnerable functions
npm
safe-eval <= 0.3.0
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cvelogic
Threat Intelligence