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CVE-2016-9078

22
FAUCET Score

CVE-2016-9078 describes a vulnerability in Firefox versions 49 and 50 where redirecting from an HTTP connection to a "data:" URL could assign the referring site's origin to the "data:" URL, leading to same-origin policy violations. This high-severity flaw (CVSS 8.8) allows for cross-origin cookie setting and has a potential for high impact on confidentiality, integrity, and availability, requiring user interaction to exploit. While not listed in CISA's KEV catalog and lacking public exploit code in Metasploit, Nuclei, or ExploitDB, it garnered significant community discussion and media coverage, including mentions in relation to the "Disdain" Exploit Kit.

Impacted Technologies

VendorProductVersion(s)CPE
49.0CPE matchmatch criteria
cpe:2.3:a:mozilla:firefox:49.0:*:*:*:*:*:*:*
50.0CPE matchmatch criteria
cpe:2.3:a:mozilla:firefox:50.0:*:*:*:*:*:*:*
< 50.0.1CPE match
cpe:2.3:a:mozilla:firefox:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.0

8.8HIGH

CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
2.8
Impact Score
5.9
CvssVersion
3.0

Exploit Intelligence

EPSS Score
1.88%
Probability of exploitation in next 30 days
EPSS Percentile
77.3%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0188 is in the 76th percentile among its peer group of 14,852 CVEs.

Social Chatter

No social media mentions found for this CVE.

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.2 Bluesky, 0.1 Mastodon, and 0.2 GitHub mentions.

Media Mentions

The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.1 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (1)

mozillapatch availablevia nvd_reference
View patch

References

bugzilla.mozilla.org / show_bug.cgi
ExploitIssue TrackingPatchVendor Advisory
mozilla.org / security/advisories/mfsa2016-91
Vendor Advisory
securityfocus.com / bid/94569
Third Party AdvisoryVDB Entry
securitytracker.com / id/1037353
Third Party AdvisoryVDB Entry