Description
If an XML file is served with a Content Security Policy and the XML file includes an XSL stylesheet, the Content Security Policy will not be applied to the contents of the XSL stylesheet. If the XSL sheet e.g. includes JavaScript, it would bypass any of the restrictions of the Content Security Policy applied to the XML document. This vulnerability affects Firefox < 72.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| Mozilla | Firefox | before 72 | — |
Fixed in Linux distributions
Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 20.04 LTS | firefox | 72.0.1+build1-0ubuntu1 | — |
| Ubuntu 20.04 LTS | mozjs52 | No fix yet | — |
| Ubuntu 18.04 LTS | firefox | 72.0.1+build1-0ubuntu0.18.04.1 | USN-4234-1 |
| Ubuntu 18.04 LTS | mozjs38 +1 | No fix yet | — |
| Ubuntu 16.04 LTS | firefox | 72.0.1+build1-0ubuntu0.16.04.1 | USN-4234-1 |
openSUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Tumbleweed | MozillaFirefox | 92.0-1.2 | openSUSE-SU-2024:10600-1 |
| openSUSE Tumbleweed | firefox-esr | 128.5.1-1.1 | openSUSE-SU-2024:14572-1 |
Alpine
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Alpine v3.24 | librewolf | 71.0.1-r0 | — |
| Alpine v3.23 | firefox +1 | 71.0.1-r0 | — |
| Alpine v3.22 | firefox +1 | 71.0.1-r0 | — |
| Alpine v3.21 | firefox +1 | 71.0.1-r0 | — |
| Alpine v3.20 | firefox | 71.0.1-r0 | — |
Show 8 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Alpine v3.19 | firefox | 71.0.1-r0 | — |
| Alpine v3.18 | firefox | 71.0.1-r0 | — |
| Alpine v3.17 | firefox | 71.0.1-r0 | — |
| Alpine v3.16 | firefox | 71.0.1-r0 | — |
| Alpine v3.15 | firefox | 71.0.1-r0 | — |
| Alpine v3.14 | firefox | 71.0.1-r0 | — |
| Alpine v3.13 | firefox | 71.0.1-r0 | — |
| Alpine v3.12 | firefox | 71.0.1-r0 | — |
Advisories 3
- USN-4234-1 firefox vulnerabilities Ubuntu Security Notices (USN) · Apr 22, 2026
- openSUSE-SU-2024:10600-1 MozillaFirefox-92.0-1.2 on GA media SUSE / openSUSE Security Updates · Feb 4, 2026
- openSUSE-SU-2024:14572-1 firefox-esr-128.5.1-1.1 on GA media SUSE / openSUSE Security Updates · Feb 4, 2026