A use-after-free vulnerability can occur in HTTP/2 when a cached HTTP/2 stream is closed while still in use, resulting in a potentially exploitable crash. This vulnerability affects Firefox ESR < 60.8, Firefox < 68, and Thunderbird < 60.8.
2019-07-23T14:15:15.670
2025-11-25T17:50:16.803
Modified
CVSSv3.0: 9.8 (CRITICAL)
AV:N/AC:L/Au:N/C:P/I:P/A:P
10.0
6.4
| Type | Vendor | Product | Version/Range | Vulnerable? |
|---|---|---|---|---|
| Application | mozilla | firefox | < 60.8.0 | Yes |
| Application | mozilla | firefox | < 68.0 | Yes |
| Application | mozilla | thunderbird | < 60.8.0 | Yes |