CVE-2018-5117
This vulnerability affects Thunderbird < 52.6, Firefox ESR < 52.6, and Firefox < 58.
Does this matter?
Lower severity and a low EPSS score (2.34%). Track it; it rarely justifies an emergency change on its own.
Description
If right-to-left text is used in the addressbar with left-to-right alignment, it is possible in some circumstances to scroll this text to spoof the displayed URL. This issue could result in the wrong URL being displayed as a location, which can mislead users to believe they are on a different site than the one loaded. This vulnerability affects Thunderbird < 52.6, Firefox ESR < 52.6, and Firefox < 58.
- CVSS 3.0
- 5.3 MEDIUMCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
- EPSS
- 2.34% probability · 84th percentile
- Public exploits
- None in Exploit-DB
- CISA KEV
- Not listed
- Affected
- debian/debian linux · redhat/enterprise linux · redhat/enterprise linux desktop · redhat/enterprise linux server · redhat/enterprise linux server aus · redhat/enterprise linux server eus · redhat/enterprise linux workstation · mozilla/firefox · mozilla/thunderbird · canonical/ubuntu linux
- Source
- security@mozilla.org
EPSS 2.3% 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/102783Third Party Advisory, VDB Entry
- http://www.securitytracker.com/id/1040270Third Party Advisory, VDB Entry
- https://access.redhat.com/errata/RHSA-2018:0122Third Party Advisory
- https://access.redhat.com/errata/RHSA-2018:0262Third Party Advisory
- https://bugzilla.mozilla.org/show_bug.cgi?id=1395508Issue Tracking, Patch, Vendor Advisory
- https://lists.debian.org/debian-lts-announce/2018/01/msg00030.htmlThird Party Advisory
- https://lists.debian.org/debian-lts-announce/2018/01/msg00036.htmlThird Party Advisory
- https://usn.ubuntu.com/3544-1/Third Party Advisory
- https://www.debian.org/security/2018/dsa-4096Third Party Advisory
- https://www.debian.org/security/2018/dsa-4102Third Party Advisory
- https://www.mozilla.org/security/advisories/mfsa2018-02/Vendor Advisory
- https://www.mozilla.org/security/advisories/mfsa2018-03/Vendor Advisory
- https://www.mozilla.org/security/advisories/mfsa2018-04/Vendor Advisory
- http://www.securityfocus.com/bid/102783Third Party Advisory, VDB Entry
- http://www.securitytracker.com/id/1040270Third Party Advisory, VDB Entry
- https://access.redhat.com/errata/RHSA-2018:0122Third Party Advisory
- https://access.redhat.com/errata/RHSA-2018:0262Third Party Advisory
- https://bugzilla.mozilla.org/show_bug.cgi?id=1395508Issue Tracking, Patch, Vendor Advisory
- https://lists.debian.org/debian-lts-announce/2018/01/msg00030.htmlThird Party Advisory
- https://lists.debian.org/debian-lts-announce/2018/01/msg00036.htmlThird Party Advisory
- https://usn.ubuntu.com/3544-1/Third Party Advisory
- https://www.debian.org/security/2018/dsa-4096Third Party Advisory
- https://www.debian.org/security/2018/dsa-4102Third Party Advisory
- https://www.mozilla.org/security/advisories/mfsa2018-02/Vendor Advisory
- https://www.mozilla.org/security/advisories/mfsa2018-03/Vendor Advisory
- https://www.mozilla.org/security/advisories/mfsa2018-04/Vendor Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.