CVE-2026-2320 is a vulnerability discovered in Google Chrome prior to version 145.0.7632.45, related to the improper implementation of the File input control in the browser's UI. Specifically, the flaw allows a remote attacker to craft a malicious HTML page that, when visited by a user who performs certain UI gestures (such as clicking or interacting with the file input in a particular way), can trigger UI spoofing. UI spoofing involves presenting deceptive interface elements that appear legitimate but are controlled by the attacker, potentially tricking users into performing unintended actions or divulging sensitive information. The vulnerability is classified under CWE-451, indicating an incorrect implementation issue. The CVSS v3.1 base score is 6.5 (medium severity), with the vector indicating network attack vector (AV:N), low attack complexity (AC:L), no privileges required (PR:N), user interaction required (UI:R), unchanged scope (S:U), no confidentiality impact (C:N), high integrity impact (I:H), and no availability impact (A:N). While the vulnerability does not directly leak data or crash the browser, the integrity impact is significant because UI spoofing can facilitate phishing or social engineering attacks. No patches or exploit details are currently provided, and no known exploits are reported in the wild as of the publication date. The vulnerability was reserved and published in early 2026, reflecting a recent discovery and disclosure timeline.

The primary impact of CVE-2026-2320 is on the integrity of user interactions within Google Chrome. By enabling UI spoofing, attackers can deceive users into believing they are interacting with legitimate browser UI elements or trusted websites, potentially leading to phishing, credential theft, or unauthorized actions. Although confidentiality and availability are not directly affected, the integrity compromise can have cascading effects, such as enabling further attacks or data compromise through social engineering. Organizations relying heavily on Chrome for web access, especially those with users less trained in security awareness, may face increased risk of targeted phishing campaigns exploiting this vulnerability. Since exploitation requires user interaction, the threat is mitigated somewhat by user vigilance but remains significant in environments where users frequently handle untrusted web content. The lack of known exploits reduces immediate risk but does not eliminate the potential for future attacks once exploit code becomes available. Enterprises with large user bases on Chrome versions prior to 145.0.7632.45 should prioritize patching to prevent exploitation. The vulnerability could be leveraged in targeted attacks against sectors such as finance, government, and critical infrastructure where trust in UI elements is crucial.

To mitigate CVE-2026-2320, organizations should promptly update all Google Chrome installations to version 145.0.7632.45 or later, where the vulnerability is fixed. In environments where immediate patching is not feasible, administrators can consider deploying browser policies to restrict or disable file input interactions on untrusted or high-risk websites, reducing the attack surface. User education is critical; training users to recognize suspicious UI behavior and avoid interacting with unexpected file input prompts can lower exploitation likelihood. Employing browser security extensions that detect or block UI spoofing attempts may provide additional protection. Network-level defenses such as web filtering and URL reputation services can help prevent access to malicious sites hosting crafted HTML pages. Monitoring browser logs for unusual UI interaction patterns could aid in early detection of exploitation attempts. Finally, organizations should maintain an up-to-date inventory of Chrome versions in use and enforce update policies to minimize exposure duration.