---
id: "CVE-2026-104350"
kind: "vulnerability"
aliases: ["CVE-2026-104350"]
title: "Adobe Campaign Classic: reflected XSS lets attacker run scripts in victims' sessions"
severity: "critical"
cvss: 9.3
epss: null
exploited: false
status: "open"
category: "vendor"
products: []
ecosystems: []
tags: ["adobe-campaign-classic", "on-premise", "vendor", "web-ui", "xss"]
not_affected_if: ["adobe-hosted", "user-interaction-required"]
published_at: "2026-10-27T17:16:55+00:00"
first_seen_at: "2026-10-27T17:32:44+00:00"
updated_at: "2026-10-27T17:38:37+00:00"
sources: [{"source": "nvd", "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-104350", "first_seen_at": "2026-10-27T17:32:44+00:00"}, {"source": "analyst", "url": null, "first_seen_at": "2026-10-27T17:38:37+00:00"}]
---

# Adobe Campaign Classic: reflected XSS lets attacker run scripts in victims' sessions

Adobe Campaign Classic has a reflected cross-site scripting flaw, so a crafted URL or compromised page can inject script into a user's browser. An attacker could use that script to take over the victim's account or session.

_Summary, check and fix written by a model from the sources; labelled as such._

## How to check

Unknown for this CVE. Check your build in Client Console Help > About; the latest builds are 7.4.4 build 9403 (Oct 15, 2026) and 7.4.5 build 9420, but no source ties this CVE to them.

## Timeline

- 2026-10-27T17:32:44+00:00 nvd https://nvd.nist.gov/vuln/detail/CVE-2026-104350
- 2026-10-27T17:38:37+00:00 analyst — NVD says Adobe CNA, CVSS 9.3 (AV:N/UI:R/S:C). CVE is NOT listed in APSB26-142 (18 CVEs, rev. Sep 22) or any bulletin I could find; the newest ACC build 9403 (Oct 15) notes only say 'security improvements', no CVE list. Affected/fixed versions unknown; nothing verified. Settle by finding the Adobe APSB26 bulletin that lists it (likely newer than 142) on adobe.com/trust/security/products/campaign.

## Documents

- [mentions] Adobe Campaign Classic v7 release notes (builds 9402, 9403) https://experienceleague.adobe.com/en/docs/campaign-classic/using/release-notes/latest-release

## From the sources

Adobe Campaign Classic (ACC) 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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_Free to read at a human pace. An API with keys and an MCP server are in preparation; early access: hello@infrastack.ai_