CVE-2026-75698 in Connect
Summary
by MITRE • 09/22/2026
Adobe Connect is affected by a reflected Cross-Site Scripting (XSS) vulnerability. An attacker could exploit this vulnerability to inject malicious scripts into a web page, potentially gaining elevated access or control over the victim's account or session. Exploitation of this issue requires user interaction in that a victim must visit a maliciously crafted URL or interact with a compromised web page. Scope is changed.
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Analysis
by VulDB Data Team • 09/22/2026
Adobe Connect contains a reflected Cross-Site Scripting vulnerability within its web application interface, representing a significant security flaw where the system fails to properly validate and sanitize user-supplied input before including it in HTTP responses. This technical deficiency allows an attacker to inject malicious client-side scripts into pages viewed by other users. The core of this issue lies in the lack of adequate output encoding or context-aware filtering for specific parameters that are reflected directly back to the browser without sufficient sanitization, thereby violating fundamental web application security principles regarding input handling and data integrity.
The operational impact of this vulnerability is severe because it enables an attacker to execute arbitrary JavaScript code within the security context of the Adobe Connect domain. By crafting a malicious URL containing embedded script payloads or by luring victims to interact with compromised content that triggers the reflection, the attacker can hijack user sessions, steal sensitive authentication cookies, perform actions on behalf of the victim such as modifying conference settings or accessing private data, and potentially redirect users to phishing sites designed to harvest credentials. This elevation in access compromises the confidentiality, integrity, and availability of the collaborative environment managed by Adobe Connect.
From a classification perspective, this vulnerability aligns with CWE-79, which describes Improper Neutralization of Input During Web Page Generation commonly known as Cross-site Scripting. The specific nature of the flaw being reflected rather than stored places it squarely within the domain of Reflected XSS attacks. In terms of adversary tactics and techniques, exploitation maps to MITRE ATT&CK technique T1059.007, which covers JavaScript execution under client-side scripting. This categorization highlights how attackers leverage browser-native capabilities to bypass server-side controls once a user interacts with the malicious payload.
Mitigation strategies must focus on both immediate remediation and long-term architectural improvements. Adobe has released patches that address this specific input validation gap by implementing strict encoding of all dynamic content before it is rendered in the HTML response. Administrators should immediately apply these updates to ensure server-side sanitization is active for all affected endpoints. Additionally, organizations can implement defense-in-depth measures such as deploying Content Security Policy headers to restrict script execution sources and enabling HTTP-only flags on session cookies to mitigate data theft even if XSS is successfully exploited. User awareness training remains critical since exploitation requires social engineering elements like visiting crafted URLs or interacting with malicious pages, making vigilance a key component of the overall security posture against this threat vector.