CVE-2025-69723 Details
Description
A reflected cross-site scripting (XSS) vulnerability in localstack v4.9.2 allows attackers to execute arbitrary Javascript in the context of the user's browser via a crafted URL.
A reflected cross-site scripting vulnerability has been identified in LocalStack version 4.9.2. This vulnerability allows attackers to execute arbitrary JavaScript in the context of the user's browser by sending a crafted URL. The issue arises from user input being inserted into the HTML response without proper sanitization, enabling the execution of malicious scripts.
Users are advised to update to the patched version of LocalStack, as the vulnerability has been addressed in the latest release.
Metrics
CVSS 4.0 Severity and Vector Strings:
VolerionCVSS 3.x Severity and Vector Strings:
No data available for CVSS Version 2.0 on this CVE.
Volerion
Assessed Oct 22, 2026CISA-ADP
Assessed Oct 26, 2026References to Advisories, Solutions, and Tools
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| URL | Source(s) | Tag(s) |
|---|---|---|
| https://cyberroute.github.io/post/2025-12-11-localstack-hack/ | [email protected] | BundleExploitRemedyTechnical Analysis |
Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| CWE-79 | Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') | CISA-ADP |
Affected Products
| Product | Versions |
|---|---|
| LocalStack | 4.9.2 (semver) |
CPE
Remediation
| |
Change History
3 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Oct 28, 2026 | CVE Translated | [email protected] |
| Oct 26, 2026 | CVE Modified | CISA-ADP |
| Oct 22, 2026 | New CVE Received | [email protected] |