Due to a layout change, iframe contents could have been rendered outside of its border. This could have led to user confusion or spoofing…

Description

Due to a layout change, iframe contents could have been rendered outside of its border. This could have led to user confusion or spoofing attacks. This vulnerability affects Thunderbird < 91.8, Firefox < 99, and Firefox ESR < 91.8.

Scores

EPSS (exploitation in 30 days)

0.58% · top 52% of all CVEs (6 Nov 2026)

CISA SSVC

Exploitation: poc · Automatable: no · Technical impact: partial

The list uses the assigner's score when there is one, then CISA's, then NVD's: Medium 5.4.

Weakness

• iframe contents could be rendered outside the border
• CWE-1021 Improper Restriction of Rendered UI Layers or Frames (opens in a new tab)All about CWE-1021 and its CVEs

Affected products

• Mozilla · Thunderbird

  • affected unspecified – < 91.8

• Mozilla · Firefox

  • affected unspecified – < 99

• Mozilla · Firefox ESR

  • affected unspecified – < 91.8

References (4)

• https://www.mozilla.org/security/advisories/mfsa2022-13/ (opens in a new tab)x_transferred
• https://www.mozilla.org/security/advisories/mfsa2022-14/ (opens in a new tab)x_transferred
• https://www.mozilla.org/security/advisories/mfsa2022-15/ (opens in a new tab)x_transferred
• https://bugzilla.mozilla.org/show_bug.cgi?id=1735265 (opens in a new tab)x_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-2022-28286](https://trackcve.app/badge/CVE-2022-28286.svg)](https://trackcve.app/cve/CVE-2022-28286)

Record last updated 16 Apr 2025, 14:02 UTC.