CVE-2016-9903

Severity: medium (CVSS 6.1 v3.0)
Exploited in the wild: not listed in CISA KEV
EPSS: 1.1% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2018-06-11 · updated 2026-06-17
Weakness: CWE-79

Description

Mozilla's add-ons SDK had a world-accessible resource with an HTML injection vulnerability. If an additional vulnerability allowed this resource to be loaded as a document it could allow injecting content and script into an add-on's context. This vulnerability affects Firefox < 50.1.

Affected products

Mozilla Firefox: before 50.1 — fixed in 50.1

How to fix

Upgrade to a fixed version: Mozilla Firefox 50.1. Check the vendor advisory for mitigations.

References

http://www.securityfocus.com/bid/94883
http://www.securitytracker.com/id/1037461
https://bugzilla.mozilla.org/show_bug.cgi?id=1315435
https://www.mozilla.org/security/advisories/mfsa2016-94/
http://www.securityfocus.com/bid/94883
http://www.securitytracker.com/id/1037461
https://bugzilla.mozilla.org/show_bug.cgi?id=1315435
https://www.mozilla.org/security/advisories/mfsa2016-94/

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