Angular Expressions - Remote Code Execution when using locals
Impact
An attacker can write a malicious expression that escapes the sandbox to execute arbitrary code on the system.
Example of vulnerable code:
const expressions = require("angular-expressions");
const result = expressions.compile("__proto__.constructor")({}, {});
// result should be undefined, however for versions <=1.4.2, it returns an object.With a more complex (undisclosed) payload, one can get full access to Arbitrary code execution on the system.
Patches
The problem has been patched in version 1.4.3 of angular-expressions.
Workarounds
There is one workaround if it not possible for you to update :
- Make sure that you use the compiled function with just one argument : ie this is not vulnerable :
const result = expressions.compile("__proto__.constructor")({});: in this case you lose the feature of locals if you need it.
Credits
Credits go to JorianWoltjer who has found the issue and reported it to use. https://jorianwoltjer.com/
Affected software
Click a technology to see all vulnerabilities affecting it.
| Platform | Package | Vulnerable versions | Fixed in |
|---|---|---|---|
| npm package | angular-expressions | < 1.4.3 | 1.4.3 |
References
- CVSS vector
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N- Weakness (CWE)
CWE-94- Platform
- npm
- Package
angular-expressions- Disclosed
- 10.12.2024
- Updated
- 11.10.2026 10:22
Sources and licenses
OSV / GitHub Advisory Database - GHSA-5462-4vcx-jh7j - CC BY 4.0
Vulnerability history: angular-expressions
All published vulnerabilities of this package (npm package), newest first. Shows whether this is a one-off slip or a package that needs watching.
- Total entries
- 4
- First → latest
- 01.2020 05.2026
- Without a fix
- 0
- Exploited in attacks
- 0
Severity breakdown
- Critical 2
- High 2
Disclosures per year
- 2020: 1
- 2021: 1
- 2022: 0
- 2023: 0
- 2024: 1
- 2025: 0
- 2026: 1
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Angular Expressions - Remote Code Execution when using locals this entry
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