A use-after-free and use-after-scope vulnerability when logging errors from headers for XML HTTP Requests (XHR). This could result in a potentially exploitable crash. This vulnerability affects Firefox < 54, Firefox ESR < 52.2, and Thunderbird < 52.2.
History

Tue, 25 Nov 2025 18:00:00 +0000

Type Values Removed Values Added
CPEs cpe:2.3:a:mozilla:firefox_esr:*:*:*:*:*:*:*:*
Vendors & Products Mozilla firefox Esr

cve-icon MITRE

Status: PUBLISHED

Assigner: mozilla

Published: 2018-06-11T21:00:00

Updated: 2024-08-05T16:12:28.226Z

Reserved: 2017-04-12T00:00:00

Link: CVE-2017-7756

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Modified

Published: 2018-06-11T21:29:08.030

Modified: 2025-11-25T17:50:16.803

Link: CVE-2017-7756

cve-icon Redhat

Severity : Important

Publid Date: 2017-06-14T00:00:00Z

Links: CVE-2017-7756 - Bugzilla