CVE-2017-5453

4.3 mediumEPSS 1.1%

A mechanism to inject static HTML into the RSS reader preview page due to a failure to escape characters sent as URL parameters for a feed's "TITLE" element. This vulnerability allows for spoofing but no scripted content can be run. This vulnerability affects Firefox < 53.

Severity

CVSS 3.0

4.3 medium

CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N

EPSS: 1.1% chance of exploitation in the next 30 days; higher than 64% of CVEs (scores of 2026-10-31)
CWE: CWE-20
Published: 2018-06-11
Modified: 2026-06-17
Record from: the NVD, synced 2026-10-19

Affected

mozilla:firefox

References

http://www.securityfocus.com/bid/97940
http://www.securitytracker.com/id/1038320
https://bugzilla.mozilla.org/show_bug.cgi?id=1321247
https://www.mozilla.org/security/advisories/mfsa2017-10/
http://www.securityfocus.com/bid/97940

Check your stack JSON