CVE-2021-38491
Mozilla Firefox ESR and 1 other: Mixed-content checks were unable to analyze opaque origins which led to some mixed content being loaded.
CVE-2021-38491 is fixed in 4 products on 2 platforms, first by firefox 92.0+build3-0ubuntu0.18.04.1, released September 8, 2021. It is not reported as exploited. Patch Radar priority: Routine.
RoutineFixed on 2 platforms
CVSS
6.5
Medium
Exploitation
None reported
No vendor assessment
CISA KEV
Not listed
Not in the Known Exploited Vulnerabilities catalog
EPSS
0.0088
59th percentile
Mixed-content checks were unable to analyze opaque origins which led to some mixed content being loaded. This vulnerability affects Firefox < 92.
Where it's fixed
| Product | Fixed in | Fix | Released |
|---|---|---|---|
| Windows apps | |||
| Mozilla Firefox ESR (en-US) | 102.0 | Mozilla Firefox ESR (en-US) 102.0 | Jun 23, 2022 |
| Linux | |||
| firefox · Ubuntu 18.04.6 LTS (bionic) | 92.0+build3-0ubuntu0.18.04.1 | firefox 92.0+build3-0ubuntu0.18.04.1 | Sep 8, 2021 |
| firefox · Ubuntu 20.04 LTS (focal) | 92.0+build3-0ubuntu0.20.04.1 | firefox 92.0+build3-0ubuntu0.20.04.1 | Sep 8, 2021 |
| firefox-geckodriver · Ubuntu 18.04.6 LTS (bionic) | 92.0+build3-0ubuntu0.18.04.1 | firefox-geckodriver 92.0+build3-0ubuntu0.18.04.1 | Sep 8, 2021 |
| firefox-geckodriver · Ubuntu 20.04 LTS (focal) | 92.0+build3-0ubuntu0.20.04.1 | firefox-geckodriver 92.0+build3-0ubuntu0.20.04.1 | Sep 8, 2021 |
| firefox-mozsymbols · Ubuntu 18.04.6 LTS (bionic) | 92.0+build3-0ubuntu0.18.04.1 | firefox-mozsymbols 92.0+build3-0ubuntu0.18.04.1 | Sep 8, 2021 |
| firefox-mozsymbols · Ubuntu 20.04 LTS (focal) | 92.0+build3-0ubuntu0.20.04.1 | firefox-mozsymbols 92.0+build3-0ubuntu0.20.04.1 | Sep 8, 2021 |
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