CVE-2017-5408
Video files loaded video captions cross-origin without checking for the presence of CORS headers permitting such cross-origin use, leading to potential information disclosure for video captions.
Does this matter?
Lower severity and a low EPSS score (2.54%). Track it; it rarely justifies an emergency change on its own.
Description
Video files loaded video captions cross-origin without checking for the presence of CORS headers permitting such cross-origin use, leading to potential information disclosure for video captions. This vulnerability affects Firefox < 52, Firefox ESR < 45.8, Thunderbird < 52, and Thunderbird < 45.8.
- CVSS 3.0
- 5.3 MEDIUMCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
- EPSS
- 2.54% probability · 85th percentile
- Public exploits
- None in Exploit-DB
- CISA KEV
- Not listed
- Weakness
- CWE-200
- 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
- Source
- security@mozilla.org
EPSS 2.5% 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://rhn.redhat.com/errata/RHSA-2017-0459.htmlThird Party Advisory
- http://rhn.redhat.com/errata/RHSA-2017-0461.htmlThird Party Advisory
- http://rhn.redhat.com/errata/RHSA-2017-0498.htmlThird Party Advisory
- http://www.securityfocus.com/bid/96693Third Party Advisory, VDB Entry
- http://www.securitytracker.com/id/1037966Third Party Advisory, VDB Entry
- https://bugzilla.mozilla.org/show_bug.cgi?id=1313711Exploit, Issue Tracking, Patch, Vendor Advisory
- https://security.gentoo.org/glsa/201705-06Third Party Advisory
- https://security.gentoo.org/glsa/201705-07Third Party Advisory
- https://www.debian.org/security/2017/dsa-3805Third Party Advisory
- https://www.debian.org/security/2017/dsa-3832Third Party Advisory
- https://www.mozilla.org/security/advisories/mfsa2017-05/Vendor Advisory
- https://www.mozilla.org/security/advisories/mfsa2017-06/Vendor Advisory
- https://www.mozilla.org/security/advisories/mfsa2017-07/Vendor Advisory
- https://www.mozilla.org/security/advisories/mfsa2017-09/Vendor Advisory
- http://rhn.redhat.com/errata/RHSA-2017-0459.htmlThird Party Advisory
- http://rhn.redhat.com/errata/RHSA-2017-0461.htmlThird Party Advisory
- http://rhn.redhat.com/errata/RHSA-2017-0498.htmlThird Party Advisory
- http://www.securityfocus.com/bid/96693Third Party Advisory, VDB Entry
- http://www.securitytracker.com/id/1037966Third Party Advisory, VDB Entry
- https://bugzilla.mozilla.org/show_bug.cgi?id=1313711Exploit, Issue Tracking, Patch, Vendor Advisory
- https://security.gentoo.org/glsa/201705-06Third Party Advisory
- https://security.gentoo.org/glsa/201705-07Third Party Advisory
- https://www.debian.org/security/2017/dsa-3805Third Party Advisory
- https://www.debian.org/security/2017/dsa-3832Third Party Advisory
- https://www.mozilla.org/security/advisories/mfsa2017-05/Vendor Advisory
- https://www.mozilla.org/security/advisories/mfsa2017-06/Vendor Advisory
- https://www.mozilla.org/security/advisories/mfsa2017-07/Vendor Advisory
- https://www.mozilla.org/security/advisories/mfsa2017-09/Vendor Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.