CVE-2017-5453
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.
Does this matter?
Lower severity and a low EPSS score (1.07%). Track it; it rarely justifies an emergency change on its own.
Description
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.
- CVSS 3.0
- 4.3 MEDIUMCVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N
- EPSS
- 1.07% probability · 65th percentile
- Public exploits
- None in Exploit-DB
- CISA KEV
- Not listed
- Weakness
- CWE-20
- Affected
- mozilla/firefox
- Source
- security@mozilla.org
EPSS 1.1% since 27 October 2026; no change recorded yet. Points are recorded when the score first appears and whenever it moves by a percentage point or more.
References
- http://www.securityfocus.com/bid/97940Third Party Advisory, VDB Entry
- http://www.securitytracker.com/id/1038320Third Party Advisory, VDB Entry
- https://bugzilla.mozilla.org/show_bug.cgi?id=1321247Issue Tracking, Vendor Advisory
- https://www.mozilla.org/security/advisories/mfsa2017-10/Vendor Advisory
- http://www.securityfocus.com/bid/97940Third Party Advisory, VDB Entry
- http://www.securitytracker.com/id/1038320Third Party Advisory, VDB Entry
- https://bugzilla.mozilla.org/show_bug.cgi?id=1321247Issue Tracking, Vendor Advisory
- https://www.mozilla.org/security/advisories/mfsa2017-10/Vendor Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.