Data sent with in multipart channels, such as the multipart/x-mixed-replace MIME type, will ignore the referrer-policy response header, lea…

published 2018-06-11 8 y ago modified 2026-06-17 4 mo ago also EUVD-2017-14489

cvss: 7.5; version 3.0, NVD
cisa kev: Not listed; not in CISA's catalog
epss: 1.6%; EPSS 1.6% chance of exploitation in 30 days, percentile 76%
public exploits: 0; none known

Data sent with in multipart channels, such as the multipart/x-mixed-replace MIME type, will ignore the referrer-policy response header, leading to potential information disclosure for sites using this header. This vulnerability affects Firefox < 51.

Patch / fix

fixed in 1 distros 3 links 1

Mozilla Firefox 51

ubuntu opensuse arch linux

firefox Ubuntu 14.04 LTS 51.0.1+build2-0ubuntu0.14.04.1
firefox Ubuntu 16.04 LTS 51.0.1+build2-0ubuntu0.16.04.1

ubuntu advisories UBUNTU-CVE-2017-5385

Ubuntu security data © Canonical Ltd., from https://github.com/canonical/ubuntu-security-notices via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0

firefox-esr openSUSE Tumbleweed 128.5.1-1.1
MozillaFirefox openSUSE Tumbleweed 92.0-1.2

opensuse advisories openSUSE-SU-2024:14572-1 openSUSE-SU-2024:10600-1

firefox Arch Linux 51.0.1-1

arch linux advisories AVG-157

bugzilla.mozilla.org/show_bug.cgi?id=1295945 advisory

Exploit prediction

1.62% chance of exploitation in the next 30 days, higher than 76% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

bugzilla.mozilla.org https://bugzilla.mozilla.org/show_bug.cgi?id=1295945 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:H/I:N/A:N
NVD	2.0	5.0	AV:N/AC:L/Au:N/C:P/I:N/A:N

Affected products

Mozilla Firefox

Classification

Weakness

CWE-200 Exposure of Sensitive Information to an Unauthorized Actor

References

bugzilla.mozilla.org /show_bug.cgi?id=1295945
exploit, issue-tracking, patch, vendor-advisory
mozilla.org /security/advisories/mfsa2017-01/
vendor-advisory
securitytracker.com /id/1037693
vdb-entry, third-party-advisory
securityfocus.com /bid/95763
vdb-entry, third-party-advisory

Sources

CVE List CVE-2017-5385
NVD CVE-2017-5385

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.

Summary