CVE-2026-82443 in Campaign Classic
Summary
by MITRE • 09/22/2026
Adobe Campaign Classic (ACC) is affected by a Server-Side Request Forgery (SSRF) vulnerability that could result in privilege escalation. A low-privileged attacker could exploit this vulnerability to gain elevated access to internal resources. Exploitation of this issue does not require user interaction. Scope is changed.
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Analysis
by VulDB Data Team • 09/22/2026
Adobe Campaign Classic contains a Server-Side Request Forgery vulnerability within its core processing logic that allows an unauthenticated or low-privileged attacker to induce the server into making HTTP requests to arbitrary destinations controlled by the attacker. This flaw stems from insufficient validation of user-supplied input when constructing internal network calls, enabling the manipulation of request parameters such as hostnames and ports. By crafting specific malicious payloads, an adversary can direct the application to interact with internal services that are not intended for public access or external interaction. The vulnerability is particularly dangerous because it does not require any form of user interaction, allowing remote exploitation over a network connection without prior authentication in certain configurations, thereby significantly lowering the barrier to entry for attackers seeking to compromise the system.
The operational impact of this SSRF flaw extends beyond simple data exfiltration from internal endpoints. Because Adobe Campaign Classic often operates within enterprise environments with complex internal architectures, successful exploitation can lead to privilege escalation and lateral movement across the network. An attacker can leverage the server's elevated privileges to access sensitive internal resources such as database servers, configuration management systems, or other microservices running on localhost or private IP ranges. This capability effectively bypasses perimeter security controls that rely on network segmentation, as the attack originates from a trusted application process inside the firewall. The ability to interact with these hidden services can result in unauthorized data access, modification of critical system configurations, and potentially full control over the underlying infrastructure hosting Adobe Campaign Classic.
From a technical classification perspective, this vulnerability aligns closely with CWE-918, which defines Server-Side Request Forgery as a weakness where a web server retrieves a specified resource from a user-supplied URL without proper validation of that input. Furthermore, in terms of offensive security frameworks like MITRE ATT&CK, this behavior maps to T1071 Application Layer Protocol for command and control communication or potentially T1598 Phishing for Information Gathering if used to scan internal networks, though the primary vector here is direct exploitation via HTTP requests. The lack of user interaction requirement places it in a high-severity category within vulnerability scoring systems due to its remote exploitability and potential for significant impact on confidentiality and integrity.
Mitigation strategies must focus on strict input validation and network-level controls. Adobe recommends applying the latest security patches provided by their support channels, which typically include code changes to sanitize URL inputs and restrict allowed protocols or IP ranges in internal request functions. Administrators should also implement defense-in-depth measures such as configuring web application firewalls to detect and block anomalous outbound traffic patterns originating from the application server. Additionally, network segmentation policies should be reviewed to ensure that even if an SSRF is exploited, the blast radius is limited by restricting access between the Adobe Campaign Classic servers and other critical internal services using strict firewall rules or zero-trust architecture principles. Regular monitoring of outbound connections for unusual destinations can also aid in early detection of exploitation attempts.