CVE-2021-32683 XSS through createObjectURL
An attacker can execute malicious scripts on the Wire web app domain by tricking users into opening crafted image URLs, leading to full account takeover.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- A user has to click or open something
- Fix
- None listed
What is CVE-2021-32683?
CVE-2021-32683 is a high-severity cross-site scripting vulnerability in wireapp wire-webapp, published on 15 Jun 2021. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.
Official description
wire-webapp is the web version of Wire, an open-source messenger. A cross-site scripting vulnerability exists in wire-webapp prior to version 2021-06-01-production.0. If a user is instructed to open an image in a new tab (right click -> open in new tab, or copy the URL and paste it in the URL bar), an the image payload is executed on the domain hosting the app (app.wire.com). In particular, if an image contains malicious code in addition to the actual picture, this code is executed on app.wire.com. This allows the attacker to fully control the user account. The vulnerability was patched in version 2021-06-01-production.0. As a workaround, users should not try to open image URLs.
Weakness: CWE-79
Which versions are affected by CVE-2021-32683?
It affects 1 product.
Products include Wire Wire-Webapp.
How do I fix CVE-2021-32683?
No fix has been published for CVE-2021-32683 yet. Limit exposure of the affected software until one is available.
Escape output for the context it lands in and set a strict Content Security Policy. Upgrading the affected component is the real fix. More about Cross-site scripting.
Is CVE-2021-32683 being exploited?
There is no known exploitation of CVE-2021-32683 in the wild and no public exploit code.
Other vulnerabilities in wireapp wire-webapp
- CVE-2022-29168 Cross Site Scripting in Wire Messages
- CVE-2022-24799 Cross Site Scripting in Wire Webapp
- CVE-2021-21400 Entering code in App Lock modal sends input to conversation
- CVE-2025-48066 wire-webapp has no database deletion on client logout
- CVE-2022-39380 wire-webapp contains Improper Handling of Exceptional Conditions leading to a DoS via Markdown Rendering
Sources
Also known as GHSA-382j-mmc8-m5rw.