🛡️ CVE-2023-6208
🟠 CVSS 8.8 — High ✅ No Known Exploit NVD
8.8
CVSS Score
0 Low4 Medium7 High9 Critical10

Description

When using X11, text selected by the page using the Selection API was erroneously copied into the primary selection, a temporary storage not unlike the clipboard. *This bug only affects Firefox on X11. Other systems are unaffected.* This vulnerability affects Firefox < 120, Firefox ESR < 115.5.0, and Thunderbird < 115.5.

Details

Severity HIGH
CVSS Score 8.8
CVSS Vector CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
CWE N/A
Public Exploit ✅ No
Source NVD
Published 2023-11-21
Updated 2026-06-08
Modified 2024-11-21
Fix URL N/A

Affected Packages

Software From version Fixed in
debian-linux
firefox 120.0
firefox-esr 115.5.0
thunderbird 115.5

References

Issue Tracking, Permissions Required https://bugzilla.mozilla.org/show_bug.cgi?id=1855345
Issue Tracking, Permissions Required https://bugzilla.mozilla.org/show_bug.cgi?id=1855345

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