Quick answers
- Is CVE-2026-21132 exploited in the wild?
- No. Junglewise Threat Intelligence has no report of CVE-2026-21132 being exploited in the wild.
- How severe is CVE-2026-21132?
- Informational severity, published 12 October 2026.
- Which products and versions are affected?
- Samsung Internet prior to 30.0.5.24.
- Is there a fix for CVE-2026-21132?
- Yes: fixed in 30.0.5.24. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.
- How is CVE-2026-21132 attacked?
- It is attacked over the network, in a web application.
- Am I affected by CVE-2026-21132?
- Check whether you run Samsung Internet 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.
How to fix
- Fixed in: 30.0.5.24
Technical details
The vulnerability is an improper input validation flaw in Samsung Internet's handling of script content, allowing cross-site scripting (XSS) injection. The attack vector is network-based and requires user interaction (visiting a malicious page). An attacker can inject arbitrary script that executes in the context of the victim's browser, gaining access to session data, cookies, and sensitive information.
Affected products
- Samsung Internet prior to 30.0.5.24
Timeline
- 2026-10-12: disclosed: Published by Samsung Mobile Security
- 2026-10: patched: Samsung Internet 30.0.5.24 released