WebExtensions bundled with embedded experiments were not correctly checked for proper authorization. This allowed a malicious WebExtension…

Description

WebExtensions bundled with embedded experiments were not correctly checked for proper authorization. This allowed a malicious WebExtension to gain full browser permissions. This vulnerability affects Firefox ESR < 60.1 and Firefox < 61.

Scores

EPSS (exploitation in 30 days)

2.5% · top 15% of all CVEs (6 Nov 2026)

The list uses the assigner's score when there is one, then CISA's, then NVD's: Critical 9.8.

Weakness

• WebExtension security permission checks bypassed by embedded experiments
• CWE-863 (opens in a new tab)All about CWE-863 and its CVEs

Affected products

• Mozilla · Firefox ESR

  • affected unspecified – < 60.1

• Mozilla · Firefox

  • affected unspecified – < 61

References (7)

• https://bugzilla.mozilla.org/show_bug.cgi?id=1454909 (opens in a new tab)x_refsource_CONFIRMx_transferred
• GLSA-201810-01 (opens in a new tab)vendor-advisoryx_refsource_GENTOOx_transferred
• https://www.mozilla.org/security/advisories/mfsa2018-15/ (opens in a new tab)x_refsource_CONFIRMx_transferred
• https://www.mozilla.org/security/advisories/mfsa2018-16/ (opens in a new tab)x_refsource_CONFIRMx_transferred
• 1041193 (opens in a new tab)vdb-entryx_refsource_SECTRACKx_transferred
• USN-3705-1 (opens in a new tab)vendor-advisoryx_refsource_UBUNTUx_transferred
• 104561 (opens in a new tab)vdb-entryx_refsource_BIDx_transferred

Sources

The same CVE in the primary databases and aggregators, to check against.

• CVE.org record (opens in a new tab)
• CVE List JSON (GitHub) (opens in a new tab)
• NVD (opens in a new tab)
• FIRST EPSS (opens in a new tab)
• OSV.dev (opens in a new tab)
• GitHub Advisories (opens in a new tab)
• CIRCL Vulnerability-Lookup (opens in a new tab)

Badge for a README or a ticket

[![CVE-2018-12369](https://trackcve.app/badge/CVE-2018-12369.svg)](https://trackcve.app/cve/CVE-2018-12369)

Record last updated 5 Aug 2024, 08:31 UTC.