high
7.5
CWE
254
Advisory Published
CVE Published
Updated

CVE-2016-9900

First published: Tue Dec 13 2016(Updated: )

External resources that should be blocked when loaded by SVG images can bypass security restrictions through the use of "data:" URLs. This could allow for cross-domain data leakage. This vulnerability affects Firefox < 50.1, Firefox ESR < 45.6, and Thunderbird < 45.6.

Credit: security@mozilla.org

Affected SoftwareAffected VersionHow to fix
debian/firefox
118.0.2-1
debian/firefox-esr
91.12.0esr-1~deb10u1
115.3.1esr-1~deb10u1
102.15.0esr-1~deb11u1
115.3.1esr-1~deb11u1
102.15.1esr-1~deb12u1
115.3.0esr-1~deb12u1
115.3.0esr-1
Thunderbird<45.6
45.6
Debian=9.0
Red Hat Enterprise Linux=5.0
Red Hat Enterprise Linux=6.0
Red Hat Enterprise Linux=7.0
Red Hat Enterprise Linux Desktop=5.0
Red Hat Enterprise Linux Desktop=6.0
Red Hat Enterprise Linux Desktop=7.0
Red Hat Enterprise Linux Server=5.0
Red Hat Enterprise Linux Server=6.0
Red Hat Enterprise Linux Server=7.0
Red Hat Enterprise Linux Server=7.3
Red Hat Enterprise Linux Server=7.4
Red Hat Enterprise Linux Server=7.3
Red Hat Enterprise Linux Server=7.4
Red Hat Enterprise Linux Server=7.5
Red Hat Enterprise Linux Workstation=5.0
Red Hat Enterprise Linux Workstation=6.0
Red Hat Enterprise Linux Workstation=7.0
Thunderbird<45.6.0
Firefox<50.1
Firefox ESR<45.6.0
Firefox<50.1
50.1
Firefox ESR<45.6
45.6

Remedy

https://bugzilla.mozilla.org/show_bug.cgi?id=1319122

Never miss a vulnerability like this again

Sign up to SecAlerts for real-time vulnerability data matched to your software, aggregated from hundreds of sources.

Read MoreStart Free Trial

Reference Links

Parent vulnerabilities

(Appears in the following advisories)

Peer vulnerabilities

(Found alongside the following vulnerabilities)

Frequently Asked Questions

  • What is the severity of CVE-2016-9900?

    CVE-2016-9900 has been classified as a moderate severity vulnerability.

  • How do I fix CVE-2016-9900?

    To fix CVE-2016-9900, update Firefox to version 50.1 or later, or update Firefox ESR and Thunderbird to versions 45.6 or later.

  • What versions of Firefox are affected by CVE-2016-9900?

    CVE-2016-9900 affects Firefox versions prior to 50.1.

  • Which versions of Thunderbird are impacted by CVE-2016-9900?

    Thunderbird versions below 45.6 are affected by CVE-2016-9900.

  • What are the potential consequences of CVE-2016-9900?

    CVE-2016-9900 could lead to cross-domain data leakage due to improper handling of external resources in SVG images.

Company

Resources

Contact

SecAlerts Pty Ltd.
132 Wickham Terrace
Fortitude Valley,
QLD 4006, Australia
info@secalerts.co
By using SecAlerts services, you agree to our services end-user license agreement. This website is safeguarded by reCAPTCHA and governed by the Google Privacy Policy and Terms of Service. All names, logos, and brands of products are owned by their respective owners, and any usage of these names, logos, and brands for identification purposes only does not imply endorsement. If you possess any content that requires removal, please get in touch with us.
© 2025 SecAlerts Pty Ltd.
ABN: 70 645 966 203, ACN: 645 966 203