CVE-2023-4583

HighCVSS 7.5/10Last modified Jun 17, 2026

Description

When checking if the Browsing Context had been discarded in `HttpBaseChannel`, if the load group was not available then it was assumed to have already been discarded which was not always the case for private channels after the private session had ended. This vulnerability affects Firefox < 117, Firefox ESR < 115.2, and Thunderbird < 115.2.

Metrics

CVSS 3.1 7.5/10CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N

Weakness enumeration

Affected software

No affected versions have been published.

Timeline

Published
Sep 11, 2023
Last modified
Jun 17, 2026
NVD status
Modified

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CVE-2023-4583: High severity, CVSS 7.5 | Vulnix