Read the docs
TI-2016-08020 Aliases CVE-2016-9900GHSA-5758-qh2j-cmj3

External resources that should be blocked when loaded by SVG images can bypass security…

Priority MEDIUM 45CWE-254Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
Low
Impact type
—
Confidentiality · integrity · availability
High · None · None
Fix status
Fixed

Attack profile from CVSS 3.0 · NVD. Fix status from CNA and Red Hat.

Summary

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.

Why it matters now

EPSS 0.09614 95th percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by NVD
Fix Fixed Firefox (Mozilla): 50.1Firefox ESR (Mozilla): 45.6+1 more productRed Hat: 2 advisories

SSVC decision points

Not available: CISA has not published SSVC decision points for this record.

Affected products

VendorProductAffected versionsFixed inStatusSource
MozillaFirefoxbefore 50.150.1Patch availableCNA
MozillaFirefox ESRbefore 45.645.6Patch availableCNA
MozillaThunderbirdbefore 45.645.6Patch availableCNA
  • Firefox VendorMozilla Affected before 50.1 Fixed in 50.1 Patch available CNA
  • Firefox ESR VendorMozilla Affected before 45.6 Fixed in 45.6 Patch available CNA
  • Thunderbird VendorMozilla Affected before 45.6 Fixed in 45.6 Patch available CNA

CPE configurations NVD · 20

CPEVersionsRoleVendor
cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*9.0VulnerableDebian
cpe:2.3:o:redhat:enterprise_linux:5.0:*:*:*:*:*:*:*5.0VulnerableRed Hat
cpe:2.3:o:redhat:enterprise_linux:6.0:*:*:*:*:*:*:*6.0VulnerableRed Hat
cpe:2.3:o:redhat:enterprise_linux:7.0:*:*:*:*:*:*:*7.0VulnerableRed Hat
cpe:2.3:o:redhat:enterprise_linux_desktop:5.0:*:*:*:*:*:*:*5.0VulnerableRed Hat
cpe:2.3:o:redhat:enterprise_linux_desktop:6.0:*:*:*:*:*:*:*6.0VulnerableRed Hat
cpe:2.3:o:redhat:enterprise_linux_desktop:7.0:*:*:*:*:*:*:*7.0VulnerableRed Hat
cpe:2.3:o:redhat:enterprise_linux_server:5.0:*:*:*:*:*:*:*5.0VulnerableRed Hat
cpe:2.3:o:redhat:enterprise_linux_server:6.0:*:*:*:*:*:*:*6.0VulnerableRed Hat
cpe:2.3:o:redhat:enterprise_linux_server:7.0:*:*:*:*:*:*:*7.0VulnerableRed Hat
  • cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:* Versions 9.0 Vulnerable ·Debian
  • cpe:2.3:o:redhat:enterprise_linux:5.0:*:*:*:*:*:*:* Versions 5.0 Vulnerable ·Red Hat
  • cpe:2.3:o:redhat:enterprise_linux:6.0:*:*:*:*:*:*:* Versions 6.0 Vulnerable ·Red Hat
  • cpe:2.3:o:redhat:enterprise_linux:7.0:*:*:*:*:*:*:* Versions 7.0 Vulnerable ·Red Hat
  • cpe:2.3:o:redhat:enterprise_linux_desktop:5.0:*:*:*:*:*:*:* Versions 5.0 Vulnerable ·Red Hat
  • cpe:2.3:o:redhat:enterprise_linux_desktop:6.0:*:*:*:*:*:*:* Versions 6.0 Vulnerable ·Red Hat
  • cpe:2.3:o:redhat:enterprise_linux_desktop:7.0:*:*:*:*:*:*:* Versions 7.0 Vulnerable ·Red Hat
  • cpe:2.3:o:redhat:enterprise_linux_server:5.0:*:*:*:*:*:*:* Versions 5.0 Vulnerable ·Red Hat
  • cpe:2.3:o:redhat:enterprise_linux_server:6.0:*:*:*:*:*:*:* Versions 6.0 Vulnerable ·Red Hat
  • cpe:2.3:o:redhat:enterprise_linux_server:7.0:*:*:*:*:*:*:* Versions 7.0 Vulnerable ·Red Hat
Show 10 more CPE
CPEVersionsRoleVendor
cpe:2.3:o:redhat:enterprise_linux_server_aus:7.3:*:*:*:*:*:*:*7.3VulnerableRed Hat
cpe:2.3:o:redhat:enterprise_linux_server_aus:7.4:*:*:*:*:*:*:*7.4VulnerableRed Hat
cpe:2.3:o:redhat:enterprise_linux_server_eus:7.3:*:*:*:*:*:*:*7.3VulnerableRed Hat
cpe:2.3:o:redhat:enterprise_linux_server_eus:7.4:*:*:*:*:*:*:*7.4VulnerableRed Hat
cpe:2.3:o:redhat:enterprise_linux_server_eus:7.5:*:*:*:*:*:*:*7.5VulnerableRed Hat
cpe:2.3:o:redhat:enterprise_linux_workstation:5.0:*:*:*:*:*:*:*5.0VulnerableRed Hat
cpe:2.3:o:redhat:enterprise_linux_workstation:6.0:*:*:*:*:*:*:*6.0VulnerableRed Hat
cpe:2.3:o:redhat:enterprise_linux_workstation:7.0:*:*:*:*:*:*:*7.0VulnerableRed Hat
cpe:2.3:a:mozilla:thunderbird:*:*:*:*:*:*:*:*before 45.6.0VulnerableMozilla
cpe:2.3:a:mozilla:firefox:*:*:*:*:*:*:*:*before 50.1; before 45.6.0VulnerableMozilla
  • cpe:2.3:o:redhat:enterprise_linux_server_aus:7.3:*:*:*:*:*:*:* Versions 7.3 Vulnerable ·Red Hat
  • cpe:2.3:o:redhat:enterprise_linux_server_aus:7.4:*:*:*:*:*:*:* Versions 7.4 Vulnerable ·Red Hat
  • cpe:2.3:o:redhat:enterprise_linux_server_eus:7.3:*:*:*:*:*:*:* Versions 7.3 Vulnerable ·Red Hat
  • cpe:2.3:o:redhat:enterprise_linux_server_eus:7.4:*:*:*:*:*:*:* Versions 7.4 Vulnerable ·Red Hat
  • cpe:2.3:o:redhat:enterprise_linux_server_eus:7.5:*:*:*:*:*:*:* Versions 7.5 Vulnerable ·Red Hat
  • cpe:2.3:o:redhat:enterprise_linux_workstation:5.0:*:*:*:*:*:*:* Versions 5.0 Vulnerable ·Red Hat
  • cpe:2.3:o:redhat:enterprise_linux_workstation:6.0:*:*:*:*:*:*:* Versions 6.0 Vulnerable ·Red Hat
  • cpe:2.3:o:redhat:enterprise_linux_workstation:7.0:*:*:*:*:*:*:* Versions 7.0 Vulnerable ·Red Hat
  • cpe:2.3:a:mozilla:thunderbird:*:*:*:*:*:*:*:* Versions before 45.6.0 Vulnerable ·Mozilla
  • cpe:2.3:a:mozilla:firefox:*:*:*:*:*:*:*:* Versions before 50.1; before 45.6.0 Vulnerable ·Mozilla

Remediation

  • Fix · CNA Firefox (Mozilla) Fixed in 50.1
  • Fix · CNA Firefox ESR (Mozilla) Fixed in 45.6
  • Fix · CNA Thunderbird (Mozilla) Fixed in 45.6

Red Hat 2 advisories

  • RHSA-2016:2973 Released 2016-12-21 · Red Hat rating Important
    thunderbird security update
    • Red Hat Enterprise Linux Client (v. 7) thunderbird-45.6.0-1.el7_3
    • Red Hat Enterprise Linux Desktop (v. 5 client) thunderbird-45.6.0-1.el5_11, thunderbird-45.6.0-1.el5_11.i386
    • Red Hat Enterprise Linux Desktop (v. 6) thunderbird-45.6.0-1.el6_8
    • Red Hat Enterprise Linux Optional Productivity Applications (v. 5 server) thunderbird-45.6.0-1.el5_11, thunderbird-45.6.0-1.el5_11.i386
    • Red Hat Enterprise Linux Server Optional (v. 6) thunderbird-45.6.0-1.el6_8
    • Red Hat Enterprise Linux Server Optional (v. 7) thunderbird-45.6.0-1.el7_3
    • Red Hat Enterprise Linux Workstation (v. 6) thunderbird-45.6.0-1.el6_8
    • Red Hat Enterprise Linux Workstation (v. 7) thunderbird-45.6.0-1.el7_3
  • RHSA-2016:2946 Released 2016-12-14 · Red Hat rating Critical
    firefox security update
    • Red Hat Enterprise Linux (v. 5 server) firefox-45.6.0-1.el5_11, firefox-45.6.0-1.el5_11.i386
    • Red Hat Enterprise Linux Client (v. 7) firefox-45.6.0-1.el7_3
    • Red Hat Enterprise Linux Client Optional (v. 7) firefox-45.6.0-1.el7_3
    • Red Hat Enterprise Linux Desktop (v. 5 client) firefox-45.6.0-1.el5_11, firefox-45.6.0-1.el5_11.i386
    • Red Hat Enterprise Linux Desktop (v. 6) firefox-45.6.0-1.el6_8
    • Red Hat Enterprise Linux Desktop Optional (v. 6) firefox-45.6.0-1.el6_8
    • Red Hat Enterprise Linux HPC Node Optional (v. 6) firefox-45.6.0-1.el6_8
    • Red Hat Enterprise Linux Server (v. 6) firefox-45.6.0-1.el6_8
    • Red Hat Enterprise Linux Server (v. 7) firefox-45.6.0-1.el7_3
    • Red Hat Enterprise Linux Server Optional (v. 6) firefox-45.6.0-1.el6_8, firefox-45.6.0-1.el6_8.ppc
    • Red Hat Enterprise Linux Server Optional (v. 7) firefox-45.6.0-1.el7_3, firefox-45.6.0-1.el7_3.ppc
    • Red Hat Enterprise Linux Workstation (v. 6) firefox-45.6.0-1.el6_8
    • Red Hat Enterprise Linux Workstation (v. 7) firefox-45.6.0-1.el7_3
    • Red Hat Enterprise Linux Workstation Optional (v. 6) firefox-45.6.0-1.el6_8
    • Red Hat Enterprise Linux Workstation Optional (v. 7) firefox-45.6.0-1.el7_3

Fixed in the same release

Records fixed by the same vendor advisory or release, as the CNA lists them.

  • Advisory ·

    Mozilla Firefox, Firefox ESR, Thunderbird — RHSA-2016:2946

    10 records Highest priority Priority MEDIUM 6 MEDIUM, 4 LOW

    Other records, highest priority first

    • TI-2016-08019 Use after free in Mozilla FirefoxPriority MEDIUM 61
    • TI-2016-08018 Use after free in Mozilla FirefoxPriority MEDIUM 48
    • TI-2016-08021 Improper input validation in Mozilla Firefox ESRPriority MEDIUM 47
    Show all 10 records → Advisory →
  • Advisory ·

    Mozilla Firefox, Firefox ESR, Thunderbird — DSA-3757

    8 records Highest priority Priority MEDIUM 5 MEDIUM, 3 LOW

    Other records, highest priority first

    • TI-2016-08019 Use after free in Mozilla FirefoxPriority MEDIUM 61
    • TI-2016-08018 Use after free in Mozilla FirefoxPriority MEDIUM 48
    • TI-2016-08013 Memory corruption in Mozilla FirefoxPriority MEDIUM 47
    Show all 8 records → Advisory →
Show 1 more group
  • Advisory ·

    Mozilla Firefox, Firefox ESR, Thunderbird — RHSA-2016:2973

    7 records Highest priority Priority MEDIUM 5 MEDIUM, 2 LOW

    Other records, highest priority first

    • TI-2016-08019 Use after free in Mozilla FirefoxPriority MEDIUM 61
    • TI-2016-08021 Improper input validation in Mozilla Firefox ESRPriority MEDIUM 47
    • TI-2016-08013 Memory corruption in Mozilla FirefoxPriority MEDIUM 47
    Show all 7 records → Advisory →

Vendor assessments

Red Hat

Red Hat rating: Moderate. Red Hat's page for this CVE →

ProductStatusPlan or fix
Red Hat Enterprise Linux (v. 5 server)Fixed RHSA-2016:2946
Red Hat Enterprise Linux Client (v. 7)Fixed RHSA-2016:2946, RHSA-2016:2973
Red Hat Enterprise Linux Client Optional (v. 7)Fixed RHSA-2016:2946
Red Hat Enterprise Linux Desktop (v. 5 client)Fixed RHSA-2016:2946, RHSA-2016:2973
Red Hat Enterprise Linux Desktop (v. 6)Fixed RHSA-2016:2946, RHSA-2016:2973
Red Hat Enterprise Linux Desktop Optional (v. 6)Fixed RHSA-2016:2946
Red Hat Enterprise Linux HPC Node Optional (v. 6)Fixed RHSA-2016:2946
Red Hat Enterprise Linux Optional Productivity Applications (v. 5 server)Fixed RHSA-2016:2973
Red Hat Enterprise Linux Server (v. 6)Fixed RHSA-2016:2946
Red Hat Enterprise Linux Server (v. 7)Fixed RHSA-2016:2946
Red Hat Enterprise Linux Server Optional (v. 6)Fixed RHSA-2016:2946, RHSA-2016:2973
Red Hat Enterprise Linux Server Optional (v. 7)Fixed RHSA-2016:2946, RHSA-2016:2973
Red Hat Enterprise Linux Workstation (v. 6)Fixed RHSA-2016:2946, RHSA-2016:2973
Red Hat Enterprise Linux Workstation (v. 7)Fixed RHSA-2016:2946, RHSA-2016:2973
Red Hat Enterprise Linux Workstation Optional (v. 6)Fixed RHSA-2016:2946
Red Hat Enterprise Linux Workstation Optional (v. 7)Fixed RHSA-2016:2946

Timeline

  1. 2026-10-02 Threatist record created from CVE-2016-9900
  2. 2026-10-03 Alias added: GHSA-5758-qh2j-cmj3

References

Exploit 1

Advisory 7

  • TI-2024-08981 Use after free in Mozilla Firefox KEVCVSS 3.1CRITICAL 9.8
  • TI-2022-09832 Use after free in Mozilla Firefox KEVCVSS 3.1CRITICAL 9.6
  • TI-2019-08769 Improper input validation in Mozilla Firefox ESR KEVCVSS 3.1CRITICAL 10.0
  • TI-2010-03577 Mozilla Firefox 3.5.x through 3.5.14 and 3.6.x through 3.6.11, Thunderbird 3.1.6 before… KEVCVSS 3.1CRITICAL 9.8
  • TI-2023-04799 Out-of-bounds write in Google Chrome KEVCVSS 3.1HIGH 8.8
  • TI-2023-04477 Out-of-bounds write in Google Chrome KEVCVSS 3.1HIGH 8.8
See all 3444 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences