A vulnerability where WebExtensions can download and attempt to open a file of some non-executable file types
Published Jun 11, 2018
9.8
CRITICALCVSS 3.0
EPSS 1.95%
Description
A vulnerability where WebExtensions can download and attempt to open a file of some non-executable file types. This can be triggered without specific user interaction for the file download and open actions. This could be used to trigger known vulnerabilities in the programs that handle those document types. 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.
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
AV:N/AC:L/Au:N/C:P/I:P/A:P
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 1, 2026.
Score over time
2021–2026- EPSS v1
- EPSS v5
- EPSS v2
- EPSS v3
- EPSS v4
Percentile over time
- EPSS v1
- EPSS v5
- EPSS v2
- EPSS v3
- EPSS v4
Table of values (15 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 1.95% (0.01951) | 79.50th | v5 (v2026.06.15) |
| Jun 15, 2026 | 1.98% (0.01976) | 77.82th | v5 (v2026.06.15) |
| Jun 29, 2025 | 3.36% (0.03360) | 86.80th | v4 (v2025.03.14) |
| Mar 30, 2025 | 4.55% (0.04553) | 88.15th | v4 (v2025.03.14) |
| Mar 29, 2025 | 10.06% (0.10060) | 88.36th | v4 (v2025.03.14) |
| Mar 17, 2025 | 4.69% (0.04686) | 88.62th | v4 (v2025.03.14) |
| Jul 20, 2024 | 0.51% (0.00514) | 76.87th | v3 (v2023.03.01) |
| Feb 29, 2024 | 0.51% (0.00514) | 76.09th | v3 (v2023.03.01) |
| Nov 2, 2023 | 0.51% (0.00514) | 74.07th | v3 (v2023.03.01) |
| Sep 3, 2023 | 0.55% (0.00546) | 74.52th | v3 (v2023.03.01) |
| Mar 7, 2023 | 0.65% (0.00645) | 76.09th | 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 |
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=1346515 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=1346515 | x_refsource_CONFIRMExploitIssue Tracking | |
| https://www.mozilla.org/security/advisories/mfsa2017-21/ | x_refsource_CONFIRMVendor Advisory |
Change history (0)
No recorded changes yet.