CVE-2021-21400
MEDIUMCVSS 6.5/10EPSS 1.12%
Last modified
CVE-2021-21400 is a medium-severity vulnerability rated 6.5/10 on the CVSS scale. 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. EPSS estimates a 1.12% chance of exploitation in the next 30 days.
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.
Metrics
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N
Weakness Enumeration
Affected Software
| Vendor | Product | Versions | Update |
|---|---|---|---|
| Wire | Wire-Webapp | <= 2019-07-11-13-18 | — |
| Wire | Wire-Webapp | 2019-02-11 | Staging0 |
| Wire | Wire-Webapp | 2019-02-13 | Staging0 |
| Wire | Wire-Webapp | 2019-02-18 | Staging0 |
| Wire | Wire-Webapp | 2019-02-27 | Staging0 |
| Wire | Wire-Webapp | 2019-02-28 | Staging0 |
| Wire | Wire-Webapp | 2019-03-05 | Staging0 |
| Wire | Wire-Webapp | 2019-03-07 | Staging0 |
| Wire | Wire-Webapp | 2019-03-11 | Staging0 |
| Wire | Wire-Webapp | 2019-03-13 | Staging0 |
| Wire | Wire-Webapp | 2019-03-20 | Staging0 |
| Wire | Wire-Webapp | 2019-03-25 | Staging0 |
| Wire | Wire-Webapp | 2019-03-28 | Staging0 |
| Wire | Wire-Webapp | 2019-04-08 | Staging0 |
| Wire | Wire-Webapp | 2019-04-11 | Staging0 |
| Wire | Wire-Webapp | 2019-04-18 | Staging0 |
| Wire | Wire-Webapp | 2019-04-23 | Staging1 |
| Wire | Wire-Webapp | 2019-04-25 | Staging0 |
| Wire | Wire-Webapp | 2019-04-29 | Staging0 |
| Wire | Wire-Webapp | 2019-05-14 | Staging0 |
| Wire | Wire-Webapp | 2019-05-15 | Staging0 |
| Wire | Wire-Webapp | 2019-05-31 | Staging0 |
| Wire | Wire-Webapp | 2019-06-04 | Staging0 |
| Wire | Wire-Webapp | 2019-06-20 | Staging0 |
| Wire | Wire-Webapp | 2019-06-24 | Staging0 |
| Wire | Wire-Webapp | 2019-06-25 | Staging0 |
| Wire | Wire-Webapp | 2019-06-26 | Staging0 |
| Wire | Wire-Webapp | 2019-07-01 | Staging0 |
| Wire | Wire-Webapp | 2019-07-30 | Staging0 |
| Wire | Wire-Webapp | 2019-08-01 | Staging0 |
| Wire | Wire-Webapp | 2019-08-14 | Staging0 |
| Wire | Wire-Webapp | 2019-08-19 | Staging0 |
| Wire | Wire-Webapp | 2019-08-21 | Production0 |
| Wire | Wire-Webapp | 2019-08-22 | Production0 |
| Wire | Wire-Webapp | 2019-08-27 | Staging0 |
| Wire | Wire-Webapp | 2019-09-02 | Production0 |
| Wire | Wire-Webapp | 2019-09-05 | Staging0 |
| Wire | Wire-Webapp | 2019-09-09 | Staging0 |
| Wire | Wire-Webapp | 2019-09-12 | Staging0 |
| Wire | Wire-Webapp | 2019-09-13 | Staging0 |
| Wire | Wire-Webapp | 2019-09-17 | Production0 |
| Wire | Wire-Webapp | 2019-09-18 | Staging0 |
| Wire | Wire-Webapp | 2019-09-23 | Staging0 |
| Wire | Wire-Webapp | 2019-09-24 | Production0 |
| Wire | Wire-Webapp | 2019-10-07 | Staging0 |
| Wire | Wire-Webapp | 2019-10-08 | Staging0 |
| Wire | Wire-Webapp | 2019-10-10 | Staging0 |
| Wire | Wire-Webapp | 2019-10-14 | Staging0 |
| Wire | Wire-Webapp | 2019-10-16 | Production0 |
| Wire | Wire-Webapp | 2019-10-21 | Staging0 |
Showing 50 of 167 affected configurations. See NVD for the full list.
References
- https://github.com/wireapp/wire-webapp/commit/281f2a9d795f68abe423c116d5da4e1e73a60062Patch, Third Party Advisory
- https://github.com/wireapp/wire-webapp/pull/10704Patch, Third Party Advisory
- https://github.com/wireapp/wire-webapp/releases/tag/2021-03-15-production.0Release Notes, Third Party Advisory
- https://github.com/wireapp/wire-webapp/security/advisories/GHSA-cxwr-f2j3-q8hpThird Party Advisory
- https://github.com/wireapp/wire-webapp/commit/281f2a9d795f68abe423c116d5da4e1e73a60062Patch, Third Party Advisory
- https://github.com/wireapp/wire-webapp/pull/10704Patch, Third Party Advisory
- https://github.com/wireapp/wire-webapp/releases/tag/2021-03-15-production.0Release Notes, Third Party Advisory
- https://github.com/wireapp/wire-webapp/security/advisories/GHSA-cxwr-f2j3-q8hpThird Party Advisory
Timeline
- Published
- Last Modified
- Status
- Modified
Frequently Asked Questions
What is CVE-2021-21400?
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.
How severe is CVE-2021-21400?
CVE-2021-21400 has a CVSS score of 6.5/10 (MEDIUM severity). The EPSS model estimates a 1.12% probability of exploitation in the next 30 days.
How do I fix CVE-2021-21400?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.
How Strix Helps
- How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
- Autonomous PentestingAI agents that find and validate exploitable vulnerabilities like this one across your applications.
- PR ReviewsPentest every pull request so vulnerable code is caught before it ships to production.
- AI Penetration TestingHow AI-driven penetration testing continuously covers your attack surface.
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