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CVE-2017-7807
A mechanism that uses AppCache to hijack a URL in a domain using fallback by serving the files from a sub-path on the domain. This has…
High8.1EPSS 2.1%
- Published
- Updated
- Reserved
- Assigned by
- mozilla
Description
A mechanism that uses AppCache to hijack a URL in a domain using fallback by serving the files from a sub-path on the domain. This has been addressed by requiring fallback files be inside the manifest directory. This vulnerability affects Thunderbird < 52.3, Firefox ESR < 52.3, and Firefox < 55.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| NVDNVD · Modified | 3.0 | High8.1 | CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N |
- EPSS (exploitation in 30 days)
- 2.1% · top 19% of all CVEs (3 Nov 2026)
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The list uses the assigner's score when there is one, then CISA's, then NVD's: High 8.1.
Weakness
- Domain hijacking through AppCache fallback
- CWE-20 (opens in a new tab)Other CVEs with CWE-20
Affected products
Mozilla · Thunderbird
- affected unspecified – < 52.3
Mozilla · Firefox ESR
- affected unspecified – < 52.3
Mozilla · Firefox
- affected unspecified – < 55
References (11)
- https://www.mozilla.org/security/advisories/mfsa2017-19/ (opens in a new tab)x_refsource_CONFIRMx_transferred
- https://www.mozilla.org/security/advisories/mfsa2017-20/ (opens in a new tab)x_refsource_CONFIRMx_transferred
- DSA-3968 (opens in a new tab)vendor-advisoryx_refsource_DEBIANx_transferred
- 100242 (opens in a new tab)vdb-entryx_refsource_BIDx_transferred
- https://www.mozilla.org/security/advisories/mfsa2017-18/ (opens in a new tab)x_refsource_CONFIRMx_transferred
- RHSA-2017:2456 (opens in a new tab)vendor-advisoryx_refsource_REDHATx_transferred
- RHSA-2017:2534 (opens in a new tab)vendor-advisoryx_refsource_REDHATx_transferred
- https://bugzilla.mozilla.org/show_bug.cgi?id=1376459 (opens in a new tab)x_refsource_CONFIRMx_transferred
- 1039124 (opens in a new tab)vdb-entryx_refsource_SECTRACKx_transferred
- GLSA-201803-14 (opens in a new tab)vendor-advisoryx_refsource_GENTOOx_transferred
- DSA-3928 (opens in a new tab)vendor-advisoryx_refsource_DEBIANx_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-2017-7807)Record last updated .