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CVE-2015-4490
The nsCSPHostSrc::permits function in dom/security/nsCSPUtils.cpp in Mozilla Firefox before 40.0 does not implement the Content Security…
Medium4.3EPSS 2.4%
- Published
- Updated
- Reserved
- Assigned by
- mozilla
Description
The nsCSPHostSrc::permits function in dom/security/nsCSPUtils.cpp in Mozilla Firefox before 40.0 does not implement the Content Security Policy Level 2 exceptions for the blob, data, and filesystem URL schemes during wildcard source-expression matching, which might make it easier for remote attackers to conduct cross-site scripting (XSS) attacks by leveraging unexpected policy-enforcement behavior.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| NVDNVD · Modified | 2.0 | Medium4.3 | AV:N/AC:M/Au:N/C:N/I:P/A:N |
- EPSS (exploitation in 30 days)
- 2.4% · top 16% of all CVEs (4 Nov 2026)
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The list uses the assigner's score when there is one, then CISA's, then NVD's: Medium 4.3.
Weakness
Affected products
n/a
- affected n/a
References (10)
- https://bugzilla.mozilla.org/show_bug.cgi?id=1086999 (opens in a new tab)x_refsource_CONFIRMx_transferred
- USN-2702-3 (opens in a new tab)vendor-advisoryx_refsource_UBUNTUx_transferred
- openSUSE-SU-2015:1389 (opens in a new tab)vendor-advisoryx_refsource_SUSEx_transferred
- http://www.mozilla.org/security/announce/2015/mfsa2015-91.html (opens in a new tab)x_refsource_CONFIRMx_transferred
- http://www.oracle.com/technetwork/topics/security/bulletinapr2016-2952098.html (opens in a new tab)x_refsource_CONFIRMx_transferred
- 1033247 (opens in a new tab)vdb-entryx_refsource_SECTRACKx_transferred
- USN-2702-2 (opens in a new tab)vendor-advisoryx_refsource_UBUNTUx_transferred
- USN-2702-1 (opens in a new tab)vendor-advisoryx_refsource_UBUNTUx_transferred
- GLSA-201605-06 (opens in a new tab)vendor-advisoryx_refsource_GENTOOx_transferred
- openSUSE-SU-2015:1390 (opens in a new tab)vendor-advisoryx_refsource_SUSEx_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)
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[](https://trackcve.app/cve/CVE-2015-4490)Record last updated .