**We recommend that you stop using Tails until the release of 5.1 (early June) if you use *Tor Browser* for sensitive information (passwords, private messages, personal information, etc.).**
A security vulnerability was discovered in the JavaScript engine of *Firefox* and *Tor Browser*. See the [Mozilla Foundation Security Advisory 2022-19](https://www.mozilla.org/en-US/security/advisories/mfsa2022-19/)
For example, after you visit a maliciouswebsite, an attacker controlling this website might access the password or other sensitive information that you send to other websites afterwards during the same Tails session.
The *Safest* [[security level of *Tor Browser*|doc/anonymous_internet/Tor_Browser#security-level]] is not affected because JavaScript is disabled at this security level.
