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CVE-2015-7215
The importScripts function in the Web Workers API implementation in Mozilla Firefox before 43.0 allows remote attackers to bypass the Same…
- 5.0MediumCVSS base score
- 2.5%Exploitation in 30 daysEPSS · top 15% of all CVEs
- NoKnown exploitednot in CISA's KEV catalog
- NonePublic exploitsnone known yet
Description
The importScripts function in the Web Workers API implementation in Mozilla Firefox before 43.0 allows remote attackers to bypass the Same Origin Policy by triggering use of the no-cors mode in the fetch API to attempt resource access that throws an exception, leading to information disclosure after a rethrow.
Timeline
ID reserved
By mozilla
- 3 months later
· 3 months later
Published
- 9 years later
· 9 years later
Record updated
Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| NVDNVD · Modified | 2.0 | Medium5.0 | AV:N/AC:L/Au:N/C:P/I:N/A:N |
- EPSS (exploitation in 30 days)
- 2.5% · top 15% of all CVEs (10 Nov 2026)
Loading the EPSS history…
The list uses the assigner's score when there is one, then CISA's, then NVD's: Medium 5.0.
Affected products
n/a
- affected n/a
References
14
- https://bugzilla.mozilla.org/show_bug.cgi?id=1160890 (opens in a new tab)x_refsource_CONFIRMx_transferred
- GLSA-201512-10 (opens in a new tab)vendor-advisoryx_refsource_GENTOOx_transferred
- openSUSE-SU-2015:2353 (opens in a new tab)vendor-advisoryx_refsource_SUSEx_transferred
- https://www.w3.org/Bugs/Public/show_bug.cgi?id=28961 (opens in a new tab)x_refsource_MISCx_transferred
- openSUSE-SU-2016:0308 (opens in a new tab)vendor-advisoryx_refsource_SUSEx_transferred
- FEDORA-2015-7ab3d3afcf (opens in a new tab)vendor-advisoryx_refsource_FEDORAx_transferred
- https://github.com/whatwg/html/issues/164 (opens in a new tab)x_refsource_MISCx_transferred
- http://www.mozilla.org/security/announce/2015/mfsa2015-140.html (opens in a new tab)x_refsource_CONFIRMx_transferred
- USN-2833-1 (opens in a new tab)vendor-advisoryx_refsource_UBUNTUx_transferred
- 79280 (opens in a new tab)vdb-entryx_refsource_BIDx_transferred
- openSUSE-SU-2016:0307 (opens in a new tab)vendor-advisoryx_refsource_SUSEx_transferred
- https://github.com/whatwg/html/pull/166 (opens in a new tab)x_refsource_MISCx_transferred
- FEDORA-2015-51b1105902 (opens in a new tab)vendor-advisoryx_refsource_FEDORAx_transferred
- 1034426 (opens in a new tab)vdb-entryx_refsource_SECTRACKx_transferred
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- EUVD EUVD-2015-7147 (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://cveledger.app/cve/CVE-2015-7215)Record last updated .