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Vulnerability details: VCID-fmub-ph5x-pbdu
Vulnerability ID VCID-fmub-ph5x-pbdu
Aliases CVE-2016-9078
Summary Redirection from an HTTP connection to a data: URL assigns the referring site's origin to the data: URL in some circumstances. This can result in same-origin violations against a domain if it loads resources from malicious sites. Cross-origin setting of cookies has been demonstrated without the ability to read them. *Note: This issue only affects Firefox 49 and 50.*
Status Published
Exploitability 0.5
Weighted Severity 9.0
Risk 4.5
Affected and Fixed Packages Package Details
Weaknesses (1)
CWE-601 URL Redirection to Untrusted Site ('Open Redirect')
System Score Found at
epss 0.01176 https://api.first.org/data/v1/epss?cve=CVE-2016-9078
epss 0.01176 https://api.first.org/data/v1/epss?cve=CVE-2016-9078
epss 0.01176 https://api.first.org/data/v1/epss?cve=CVE-2016-9078
epss 0.01176 https://api.first.org/data/v1/epss?cve=CVE-2016-9078
epss 0.01176 https://api.first.org/data/v1/epss?cve=CVE-2016-9078
epss 0.01176 https://api.first.org/data/v1/epss?cve=CVE-2016-9078
epss 0.01176 https://api.first.org/data/v1/epss?cve=CVE-2016-9078
epss 0.01176 https://api.first.org/data/v1/epss?cve=CVE-2016-9078
epss 0.01176 https://api.first.org/data/v1/epss?cve=CVE-2016-9078
cvssv2 5.8 https://ftp.suse.com/pub/projects/security/yaml/suse-cvss-scores.yaml
cvssv2 6.8 https://nvd.nist.gov/vuln/detail/CVE-2016-9078
cvssv3 8.8 https://nvd.nist.gov/vuln/detail/CVE-2016-9078
archlinux Critical https://security.archlinux.org/AVG-90
generic_textual critical https://www.mozilla.org/en-US/security/advisories/mfsa2016-91
Reference id Reference type URL
https://api.first.org/data/v1/epss?cve=CVE-2016-9078
https://bugzilla.mozilla.org/show_bug.cgi?id=1317641
https://ftp.suse.com/pub/projects/security/yaml/suse-cvss-scores.yaml
https://www.mozilla.org/security/advisories/mfsa2016-91/
http://www.securityfocus.com/bid/94569
http://www.securitytracker.com/id/1037353
ASA-201612-1 https://security.archlinux.org/ASA-201612-1
AVG-90 https://security.archlinux.org/AVG-90
cpe:2.3:a:mozilla:firefox:49.0:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:a:mozilla:firefox:49.0:*:*:*:*:*:*:*
cpe:2.3:a:mozilla:firefox:50.0:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:a:mozilla:firefox:50.0:*:*:*:*:*:*:*
CVE-2016-9078 https://nvd.nist.gov/vuln/detail/CVE-2016-9078
mfsa2016-91 https://www.mozilla.org/en-US/security/advisories/mfsa2016-91
USN-3140-1 https://usn.ubuntu.com/3140-1/
No exploits are available.
Vector: AV:N/AC:M/Au:N/C:P/I:P/A:N Found at https://ftp.suse.com/pub/projects/security/yaml/suse-cvss-scores.yaml
Exploitability (E) Access Vector (AV) Access Complexity (AC) Authentication (Au) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

high

functional

unproven

proof_of_concept

not_defined

local

adjacent_network

network

high

medium

low

multiple

single

none

none

partial

complete

none

partial

complete

none

partial

complete
Vector: AV:N/AC:M/Au:N/C:P/I:P/A:P Found at https://nvd.nist.gov/vuln/detail/CVE-2016-9078
Exploitability (E) Access Vector (AV) Access Complexity (AC) Authentication (Au) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

high

functional

unproven

proof_of_concept

not_defined

local

adjacent_network

network

high

medium

low

multiple

single

none

none

partial

complete

none

partial

complete

none

partial

complete
Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H Found at https://nvd.nist.gov/vuln/detail/CVE-2016-9078
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Exploit Prediction Scoring System (EPSS)
Percentile 0.78669
EPSS Score 0.01176
Published At April 1, 2026, 12:55 p.m.
Date Actor Action Source VulnerableCode Version
2026-04-01T13:16:32.577432+00:00 Mozilla Importer Import https://github.com/mozilla/foundation-security-advisories/blob/master/announce/2016/mfsa2016-91.yml 38.0.0