When processing a redirect with a conflicting Referrer-Policy, Firefox would have adopted the redirect's Referrer-Policy
Published Feb 26, 2021
6.5
MEDIUMCVSS 3.1
EPSS 1.01%
Description
When processing a redirect with a conflicting Referrer-Policy, Firefox would have adopted the redirect's Referrer-Policy. This would have potentially resulted in more information than intended by the original origin being provided to the destination of the redirect. This vulnerability affects Firefox < 86.
Affected products
-
- Version < 86StatusaffectedConstraints-
- Version
No data.
No Red Hat product state for this CVE.
No package ranges for this CVE.
Remediation
No remediation recorded yet.
Metrics
No CVSS v4.0 score for this CVE.
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N
No CVSS v3.0 score for this CVE.
AV:N/AC:M/Au:N/C:P/I:N/A:N
This CVE is not in the KEV list.
No CISA SSVC assessment for this CVE yet.
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 3, 2026.
Score over time
2021–2026- EPSS v1
- EPSS v5
- EPSS v2
- EPSS v3
Percentile over time
- EPSS v1
- EPSS v5
- EPSS v2
- EPSS v3
Table of values (13 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 3, 2026 | 1.01% (0.01007) | 61.76th | v5 (v2026.06.15) |
| Sep 20, 2026 | 1.01% (0.01007) | 61.52th | v5 (v2026.06.15) |
| Jul 20, 2024 | 0.15% (0.00150) | 51.52th | v3 (v2023.03.01) |
| Nov 11, 2023 | 0.15% (0.00150) | 50.89th | v3 (v2023.03.01) |
| Sep 15, 2023 | 0.14% (0.00141) | 49.39th | v3 (v2023.03.01) |
| Mar 7, 2023 | 0.14% (0.00136) | 47.25th | v3 (v2023.03.01) |
| Mar 6, 2023 | 0.95% (0.00954) | 36.37th | v2 (v2022.01.01) |
| Apr 1, 2022 | 0.95% (0.00954) | 32.50th | v2 (v2022.01.01) |
| Feb 4, 2022 | 7.38% (0.07376) | 80.76th | v2 (v2022.01.01) |
| Feb 3, 2022 | 3.63% (0.03630) | 71.73th | v1 |
| Jan 6, 2022 | 3.63% (0.03630) | 71.48th | v1 |
| Jan 5, 2022 | 0.83% (0.00833) | 58.90th | v5 (v2026.06.15) |
| Apr 14, 2021 | 0.62% (0.00624) | 0.00th | v1 |
No CWE recorded.
References (3)
- https://bugzilla.mozilla.org/show_bug.cgi?id=1678545 x_refsource_MISCIssue TrackingPermissions RequiredVendor Advisory
- https://security.gentoo.org/glsa/202104-10 vendor-advisoryx_refsource_GENTOOThird Party Advisory
- https://www.mozilla.org/security/advisories/mfsa2021-07/ x_refsource_MISCRelease NotesVendor Advisory
| Link | Providers | Tags |
|---|---|---|
| https://bugzilla.mozilla.org/show_bug.cgi?id=1678545 | x_refsource_MISCIssue TrackingPermissions RequiredVendor Advisory | |
| https://security.gentoo.org/glsa/202104-10 | vendor-advisoryx_refsource_GENTOOThird Party Advisory | |
| https://www.mozilla.org/security/advisories/mfsa2021-07/ | x_refsource_MISCRelease NotesVendor Advisory |
Change history (0)
No recorded changes yet.