CVE-2023-6869

MEDIUM

Firefox < 121.0 - Untrusted Content Display via Dialog Element Manipulation

Title source: llm

Description

A `<dialog>` element could have been manipulated to paint content outside of a sandboxed iframe. This could allow untrusted content to display under the guise of trusted content. This vulnerability affects Firefox < 121.

References (3)

Core 3

Core References

Issue Tracking, Permissions Required

https://bugzilla.mozilla.org/show_bug.cgi?id=1799036

Third Party Advisory

https://security.gentoo.org/glsa/202401-10

Vendor Advisory

https://www.mozilla.org/security/advisories/mfsa2023-56/

Scores

CVSS v3 6.5

EPSS 0.0014

EPSS Percentile 33.6%

Attack Vector NETWORK

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N

CISA SSVC

Vulnrichment

Exploitation none

Automatable no

Technical Impact partial

Details

Status published

Products (1)

mozilla/firefox < 121.0

Published Dec 19, 2023

Tracked Since Feb 18, 2026