The screenshot images displayed in the Activity Stream page displayed when a new tab is opened is created from the meta tags of websites.…

Description

The screenshot images displayed in the Activity Stream page displayed when a new tab is opened is created from the meta tags of websites. An issue was discovered where the page could attempt to create these images through "file:" URLs from the local file system. This loading is blocked by the sandbox but could expose local data if combined with another attack that escapes sandbox protections. This vulnerability affects Firefox < 58.

Scores

EPSS (exploitation in 30 days)

1.5% · top 25% of all CVEs (5 Nov 2026)

The list uses the assigner's score when there is one, then CISA's, then NVD's: Medium 5.3.

Weakness

• Activity Stream images can attempt to load local content through file:
• CWE-200 (opens in a new tab)All about CWE-200 and its CVEs

Affected products

• Mozilla · Firefox

  • affected unspecified – < 58

References (5)

• 1040270 (opens in a new tab)vdb-entryx_refsource_SECTRACKx_transferred
• USN-3544-1 (opens in a new tab)vendor-advisoryx_refsource_UBUNTUx_transferred
• 102786 (opens in a new tab)vdb-entryx_refsource_BIDx_transferred
• https://bugzilla.mozilla.org/show_bug.cgi?id=1420049 (opens in a new tab)x_refsource_CONFIRMx_transferred
• https://www.mozilla.org/security/advisories/mfsa2018-02/ (opens in a new tab)x_refsource_CONFIRMx_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-2018-5118](https://trackcve.app/badge/CVE-2018-5118.svg)](https://trackcve.app/cve/CVE-2018-5118)

Record last updated 5 Aug 2024, 05:26 UTC.