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TI-2018-03707 Aliases CVE-2018-5142GHSA-w4hq-q9jh-6r3x

If Media Capture and Streams API permission is requested from documents with "data:" or…

Priority LOW 26Published · Updated

Key facts

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

Attack profile from CVSS 3.0 · NVD. Fix status from CNA.

Summary

If Media Capture and Streams API permission is requested from documents with "data:" or "blob:" URLs, the permission notifications do not properly display the originating domain. The notification states "Unknown protocol" as the requestee, leading to user confusion about which site is asking for this permission. This vulnerability affects Firefox < 59.

Why it matters now

EPSS 0.01188 68th percentileScored 2026-11-07
Fix Fixed Firefox (Mozilla): 59

SSVC decision points

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

Affected products

VendorProductAffected versionsFixed inStatusSource
MozillaFirefoxbefore 5959Patch availableCNA
  • Firefox VendorMozilla Affected before 59 Fixed in 59 Patch available CNA

CPE configurations NVD · 4

CPEVersionsRoleVendor
cpe:2.3:a:mozilla:firefox:*:*:*:*:*:*:*:*before 59.0VulnerableMozilla
cpe:2.3:o:canonical:ubuntu_linux:14.04:*:*:*:lts:*:*:*14.04VulnerableCanonical
cpe:2.3:o:canonical:ubuntu_linux:16.04:*:*:*:lts:*:*:*16.04VulnerableCanonical
cpe:2.3:o:canonical:ubuntu_linux:17.10:*:*:*:*:*:*:*17.10VulnerableCanonical
  • cpe:2.3:a:mozilla:firefox:*:*:*:*:*:*:*:* Versions before 59.0 Vulnerable ·Mozilla
  • cpe:2.3:o:canonical:ubuntu_linux:14.04:*:*:*:lts:*:*:* Versions 14.04 Vulnerable ·Canonical
  • cpe:2.3:o:canonical:ubuntu_linux:16.04:*:*:*:lts:*:*:* Versions 16.04 Vulnerable ·Canonical
  • cpe:2.3:o:canonical:ubuntu_linux:17.10:*:*:*:*:*:*:* Versions 17.10 Vulnerable ·Canonical

Remediation

  • Fix · CNA Firefox (Mozilla) Fixed in 59

Fixed in the same release

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

  • Advisory ·

    Mozilla Firefox — USN-3596-1

    17 records Highest priority Priority MEDIUM 6 MEDIUM, 11 LOW

    Other records, highest priority first

    • TI-2018-03693 Memory corruption in Mozilla ThunderbirdPriority MEDIUM 49
    • TI-2018-03694 Use after free in Mozilla FirefoxPriority MEDIUM 46
    • TI-2018-03692 Memory corruption in Mozilla FirefoxPriority MEDIUM 46
    Show all 17 records → Advisory →

Timeline

  1. 2026-10-02 Threatist record created from CVE-2018-5142
  2. 2026-10-03 Alias added: GHSA-w4hq-q9jh-6r3x

References

Advisory 2

Other 1

  • 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