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CVE-2018-5164
Content Security Policy (CSP) is not applied correctly to all parts of multipart content sent with the "multipart/x-mixed-replace" MIME…
Medium6.1EPSS 1.6%
- Published
- Updated
- Reserved
- Assigned by
- mozilla
Description
Content Security Policy (CSP) is not applied correctly to all parts of multipart content sent with the "multipart/x-mixed-replace" MIME type. This could allow for script to run where CSP should block it, allowing for cross-site scripting (XSS) and other attacks. This vulnerability affects Firefox < 60.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| NVDNVD · Modified | 3.0 | Medium6.1 | CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N |
- EPSS (exploitation in 30 days)
- 1.6% · top 25% of all CVEs (4 Nov 2026)
Loading the EPSS history…
The list uses the assigner's score when there is one, then CISA's, then NVD's: Medium 6.1.
Weakness
- CSP not applied to all multipart content sent with multipart/x-mixed-replace
- CWE-79 (opens in a new tab)All about CWE-79 and its CVEs
Affected products
References (5)
- https://www.mozilla.org/security/advisories/mfsa2018-11/ (opens in a new tab)x_refsource_CONFIRMx_transferred
- 1040896 (opens in a new tab)vdb-entryx_refsource_SECTRACKx_transferred
- USN-3645-1 (opens in a new tab)vendor-advisoryx_refsource_UBUNTUx_transferred
- 104139 (opens in a new tab)vdb-entryx_refsource_BIDx_transferred
- https://bugzilla.mozilla.org/show_bug.cgi?id=1416045 (opens in a new tab)x_refsource_CONFIRMx_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)
- 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://trackcve.app/cve/CVE-2018-5164)Record last updated .