CVE-2023-6866

HighCVSS 8.8/10Last modified Jun 17, 2026

Description

TypedArrays can be fallible and lacked proper exception handling. This could lead to abuse in other APIs which expect TypedArrays to always succeed. This vulnerability affects Firefox < 121.

Metrics

CVSS 3.1 8.8/10CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Weakness enumeration

Affected software

No affected versions have been published.

Timeline

Published
Dec 19, 2023
Last modified
Jun 17, 2026
NVD status
Modified

Related CVEs from 2023

CVE-2023-68676.1The timing of a button click causing a popup to disappear was approximately the same length as the anti-clickjacking delay on permission proCVE-2023-68684.3In some instances, the user-agent would allow push requests which lacked a valid VAPID even though the push manager subscription defined oneCVE-2023-68696.5A `&lt;dialog>` element could have been manipulated to paint content outside of a sandboxed iframe. This could allow untrusted content to diCVE-2023-68704.3Applications which spawn a Toast notification in a background thread may have obscured fullscreen notifications displayed by Firefox. *ThisCVE-2023-68714.3Under certain conditions, Firefox did not display a warning when a user attempted to navigate to a new protocol handler. This vulnerability CVE-2023-68726.5Browser tab titles were being leaked by GNOME to system logs. This could potentially expose the browsing habits of users running in a privatCVE-2023-68738.8Memory safety bugs present in Firefox 120. Some of these bugs showed evidence of memory corruption and we presume that with enough effort soCVE-2023-68747.5Prior to v7.4.0, Ember ZNet is vulnerable to a denial of service attack through manipulation of the NWK sequence numberCVE-2023-68759.8The POST SMTP Mailer – Email log, Delivery Failure Notifications and Best Mail SMTP for WordPress plugin for WordPress is vulnerable to unauCVE-2023-68765.4The Clever Fox – One Click Website Importer by Nayra Themes plugin for WordPress is vulnerable to unauthorized modification of data due to aCVE-2023-68775.4The RSS Aggregator by Feedzy – Feed to Post, Autoblogging, News & YouTube Video Feeds Aggregator plugin for WordPress is vulnerable to StoreCVE-2023-68786.5The Slick Social Share Buttons plugin for WordPress is vulnerable to unauthorized modification of data due to a missing capability check on
CVE-2023-6866: High severity, CVSS 8.8 | Vulnix