MEDIUM
WebExtensions could use popups and panels in the extension UI to load an "about:" privileged URL, violating security checks that disallow this behavior
Published Jun 11, 2018
5.3
MEDIUMCVSS 3.0
EPSS 1.26%
Description
WebExtensions could use popups and panels in the extension UI to load an "about:" privileged URL, violating security checks that disallow this behavior. This vulnerability affects Firefox < 56.
Affected products
-
- Version unspecifiedStatusaffectedConstraints<56
- 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.
No CVSS v3.1 score for this CVE.
5.3 MEDIUM NVD
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
Attack Vector Network
Attack Complexity Low
Privileges Required None
User Interaction None
Scope Unchanged
Confidentiality Impact Low
Integrity Impact None
Availability Impact None
5.0 MEDIUM NVD
AV:N/AC:L/Au:N/C:P/I:N/A:N
Access Vector Network
Access Complexity Low
Authentication None
Confidentiality Impact Partial
Integrity Impact None
Availability Impact None
This CVE is not in the KEV list.
No CISA SSVC assessment for this CVE yet.
1.26% 0.01260
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 1, 2026.
EPSS probability 0.01260
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 (10 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 1.26% (0.01260) | 68.52th | v5 (v2026.06.15) |
| Sep 20, 2026 | 1.26% (0.01260) | 68.28th | v5 (v2026.06.15) |
| Jul 20, 2024 | 0.17% (0.00165) | 53.61th | v3 (v2023.03.01) |
| Nov 2, 2023 | 0.17% (0.00165) | 53.09th | v3 (v2023.03.01) |
| Sep 3, 2023 | 0.24% (0.00237) | 61.09th | v3 (v2023.03.01) |
| Mar 7, 2023 | 0.31% (0.00307) | 65.11th | v3 (v2023.03.01) |
| Mar 6, 2023 | 1.02% (0.01018) | 40.69th | v2 (v2022.01.01) |
| Feb 4, 2022 | 1.02% (0.01018) | 19.50th | v2 (v2022.01.01) |
| Feb 3, 2022 | 1.10% (0.01105) | 29.18th | v5 (v2026.06.15) |
| Apr 14, 2021 | 1.10% (0.01105) | 0.00th | v1 |
Weaknesses (1)
References (4)
- http://www.securityfocus.com/bid/101057 vdb-entryx_refsource_BIDThird Party AdvisoryVDB Entry
- http://www.securitytracker.com/id/1039465 vdb-entryx_refsource_SECTRACKThird Party AdvisoryVDB Entry
- https://bugzilla.mozilla.org/show_bug.cgi?id=1380597 x_refsource_CONFIRMExploitIssue Tracking
- https://www.mozilla.org/security/advisories/mfsa2017-21/ x_refsource_CONFIRMVendor Advisory
| Link | Providers | Tags |
|---|---|---|
| http://www.securityfocus.com/bid/101057 | vdb-entryx_refsource_BIDThird Party AdvisoryVDB Entry | |
| http://www.securitytracker.com/id/1039465 | vdb-entryx_refsource_SECTRACKThird Party AdvisoryVDB Entry | |
| https://bugzilla.mozilla.org/show_bug.cgi?id=1380597 | x_refsource_CONFIRMExploitIssue Tracking | |
| https://www.mozilla.org/security/advisories/mfsa2017-21/ | x_refsource_CONFIRMVendor Advisory |
Change history (0)
No recorded changes yet.
Sources
CVE.org / MITRE
Status PUBLISHED
Assigner mozilla
Published Jun 11, 2018
Updated Aug 5, 2024
Reserved Apr 12, 2017
Link CVE-2017-7816
CISA Vulnrichment
Updated n/a