Angular Expressions - Remote Code Execution using filters

## 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("a | __proto__")({}, {}); ``` This should throw the error : Filter '__proto__' is not defined, however, this shows : Uncaught SyntaxError: Unexpected identifier 'Object' With a more complex (undisclosed) payload, one can get full access to Arbitrary code execution on the system. ## Vulnerable versions : angular-expressions <= 1.5.1 ## Patches The problem has been patched in version 1.5.2 of angular-expressions. ## Credits Credits go to San Gil from [www.securityoffice.io](https://securityoffice.io/) who has found the issue and reported it to us.

Source published

11 May 2026 16:20:58 UTC

Source modified

13 May 2026 14:01:28 UTC

Observed here

24 Oct 2026 13:17:17 UTC

Source terms

GitHub Advisory Database · CC-BY-4.0

Original source record · Cite this exact observation · Complete original publisher JSON

This view projects the publisher's source fields for reading; the original JSON retains additional fields and CVE enrichment containers. Attribution: osv · GitHub Advisory Database · CC-BY-4.0. Source text is retained; field grouping and change labels are provided by ChangeIntel.

CVSS_V4 · 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

Publisher rating · CRITICAL