CVE-2017-5450 json
A mechanism to spoof the Firefox for Android addressbar using a "javascript:" URI.
published 2018-06-11 8 y ago modified 2026-06-17 4 mo ago also EUVD-2017-14554
- cvss
- 7.5
- version 3.0, NVD
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 1.8%
- EPSS 1.8% chance of exploitation in 30 days, percentile 78%
- public exploits
- 0
- none known
Summary
A mechanism to spoof the Firefox for Android addressbar using a "javascript:" URI. On Firefox for Android, the base domain is parsed incorrectly, making the resulting location less visibly a spoofed site and showing an incorrect domain in appended notifications. This vulnerability affects Firefox < 53.
Patch / fix
- Mozilla Firefox 53
Exploit prediction
1.80% chance of exploitation in the next 30 days, higher than 78% of all scored CVEs (FIRST EPSS, 2026-11-08).
Exploits and checks
- bugzilla.mozilla.org https://bugzilla.mozilla.org/show_bug.cgi?id=1325955 referenced PoC, tagged "exploit" by a source, unverified
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| NVD | 3.0 | 7.5 | CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N |
| NVD | 2.0 | 5.0 | AV:N/AC:L/Au:N/C:N/I:P/A:N |
Affected products
- Mozilla Firefox
Classification
- Weakness
-
- CWE-20 Improper Input Validation
References
-
bugzilla.mozilla.org
/show_bug.cgi?id=1325955
exploit, issue-tracking
-
mozilla.org
/security/advisories/mfsa2017-10/
vendor-advisory
-
securityfocus.com
/bid/97940
vdb-entry, third-party-advisory
-
securitytracker.com
/id/1038320
vdb-entry, third-party-advisory
Sources
- CVE List CVE-2017-5450
- NVD CVE-2017-5450
Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.