Quick answers
- Is CVE-2026-47311 exploited in the wild?
- No. Junglewise Threat Intelligence has no report of CVE-2026-47311 being exploited in the wild.
- How severe is CVE-2026-47311?
- High severity, with a CVSS score of 7.8, published 19 May 2026.
- Which products and versions are affected?
- Samsung Escargot 590345cc6258317c5da850d846ce6baaf2afc2d3.
- Is there a fix for CVE-2026-47311?
- A patch was published on 2026-05-14: Fix merged into master branch Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.
- How is CVE-2026-47311 attacked?
- It is attacked with local access, in a software library.
- Am I affected by CVE-2026-47311?
- Check whether you run Samsung Escargot at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.
Technical details
A heap-based buffer overflow (CWE-122) exists in Samsung's Escargot JavaScript engine. The vulnerability is triggered when the engine handles specific edge cases during memory allocation or script evaluation, such as nested eval calls or invalid error value handling in the API. An attacker can exploit this by providing a crafted JavaScript payload that requires user interaction (UI:R) to be executed locally. Successful exploitation can lead to arbitrary code execution or a denial-of-service (crash) within the context of the engine. A fix has been identified in the project's pull request #1565 which addresses various crash issues and pointer dereference safety.
Affected products
- Samsung Escargot 590345cc6258317c5da850d846ce6baaf2afc2d3
Timeline
- 2026-04-28: other: Initial fix pull request submitted to GitHub
- 2026-05-14: patched: Fix merged into master branch
- 2026-05-19: disclosed: CVE published to NVD