Adobe Campaign Classic SQL Injection (CVE-2026-105781)

For Australian organisations, customer data is the lifeblood of digital marketing. Adobe Campaign Classic serves as the engine room for many of our largest enterprises, managing complex customer journeys and sensitive personal information. A new critical SQL injection vulnerability, identified as CVE-2026-105781, has emerged that threatens the integrity of these platforms. Given the increasing scrutiny from the Office of the Australian Information Commissioner (OAIC) regarding data breaches, this is not just a technical oversight; it is a significant business risk.

Understanding the Technical Vulnerability

CVE-2026-105781 is a SQL injection (SQLi) vulnerability residing within the Adobe Campaign Classic and Connect architectures. At its core, the flaw exists because the application fails to properly sanitise user-supplied input before processing it within database queries. An unauthenticated or low-privileged attacker can inject malicious SQL commands into specific API endpoints or form inputs. When the backend database executes these commands, the attacker can manipulate the query logic, potentially bypassing authentication, accessing unauthorised data, or even modifying the database contents directly.

Potential Impact on Your Infrastructure

The impact of this vulnerability is severe. Because Adobe Campaign often sits at the intersection of your CRM and customer-facing interfaces, an exploit could lead to:

• Data Exfiltration: Attackers could dump your entire customer database, including personally identifiable information (PII) such as email addresses, phone numbers, and purchase histories.
• Data Manipulation: Threat actors could alter campaign logic or inject malicious links into communications, damaging your brand reputation and customer trust.
• Persistence: In some scenarios, successful SQL injection can be leveraged as a stepping stone to gain further access to the underlying server infrastructure, leading to a wider network compromise.

Aligning with ACSC Guidance

The Australian Cyber Security Centre (ACSC) consistently advocates for a "defence in depth" approach to mitigate injection vulnerabilities. Relying solely on patching is insufficient. Australian businesses should ensure their Web Application Firewalls (WAFs) are updated with the latest signatures to detect and block SQLi attempts. Furthermore, applying the principle of least privilege to the database service accounts used by Adobe Campaign can help limit the damage if a breach occurs.

What You Should Do

Security teams should prioritise the following actions immediately:

• Verify Versions: Determine if your current deployment of Adobe Campaign Classic or Connect falls within the affected version range specified in the official Adobe security bulletin.
• Apply Patches: Engage with your Adobe representative or technical lead to schedule and deploy the official security patches provided by the vendor. This is your primary line of defence.
• Review WAF Rules: Update your Web Application Firewall (WAF) to include rules specifically designed to detect and drop suspicious SQL injection patterns targeting your Campaign API endpoints.
• Monitor Logs: Inspect application and database logs for unusual query patterns, such as unexpected syntax or large volume exports, which may indicate an attempt to exploit this vulnerability.
• Restrict Access: Ensure the Adobe Campaign interface and associated APIs are not exposed to the public internet unless absolutely necessary. Restrict access to known, trusted IP ranges.

Conclusion

CVE-2026-105781 is a timely reminder that enterprise marketing tools are high-value targets for attackers. By taking proactive steps to patch your systems and hardening your network perimeter, you can mitigate the risks associated with this vulnerability. In the current Australian threat landscape, visibility and swift remediation remain the most effective ways to protect your customer data and your company’s reputation.