EUVD-2026-52519
GHSA-w9r5-8hh9-9cvp
Severity by source
AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
Network-reachable SSTI with no interaction yields RCE and total C/I/A loss; scope changes since injected code escapes the template sandbox to the host, though the 'current user' wording leaves PR:N worth confirming.
Primary rating from Vendor (adobe).
CVSS VectorVendor: adobe
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
Lifecycle Timeline
2DescriptionCVE.org
Adobe Campaign Classic (ACC) is affected by an Improper Neutralization of Special Elements Used in a Template Engine vulnerability that could result in arbitrary code execution in the context of the current user. An attacker could exploit this vulnerability to execute arbitrary code. Exploitation of this issue does not require user interaction. Scope is changed.
Articles & Coverage 1
AnalysisAI
Remote code execution in Adobe Campaign Classic (ACC) arises from server-side template injection (CWE-1336), where improperly neutralized special elements in the template engine let an attacker run arbitrary code in the context of the current user. Any exposed ACC instance is affected, and per the CVSS 3.1 vector (AV:N/AC:L/PR:N/UI:N) exploitation is remote, low-complexity, and requires no privileges or user interaction, with a changed scope pushing the CVSS base score to a maximum 10.0. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | The prerequisite is an ACC input path that flows into the server-side template engine - a personalization field, delivery/message body, or workflow expression that accepts attacker-influenced content which the engine then evaluates (CWE-1336 SSTI). … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | This is a genuine top-priority issue rather than a high-CVSS-but-low-real-risk case. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in. |
| Exploit Scenario | An attacker reaches an Adobe Campaign Classic endpoint that feeds attacker-influenced data into a personalization or delivery template and submits input containing template-engine syntax instead of plain data. The engine evaluates the injected expression, breaking out of the data context to run arbitrary code on the server in the current user's context, giving the attacker a foothold in the marketing platform and its data. … |
| Remediation | Apply the Adobe security update for Adobe Campaign Classic as directed in advisory APSB26-120 (https://helpx.adobe.com/security/products/campaign/apsb26-120.html); consult that advisory for the exact fixed build, since the input data provides a version-wildcarded CPE and does not specify an exact patched version number. … Detailed patch versions, workarounds, and compensating controls in full report. |
Recommended ActionAI
Within 24 hours, perform a complete inventory of all Adobe Campaign Classic instances and assess their network exposure; immediately implement network-level controls such as restricting ACC access to authorized networks only and disabling unnecessary external connectivity. …
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