EUVD-2026-40342
GHSA-66r6-8679-j6vq
Severity by source
AV:A/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H
Link-based reflected XSS is realistically network-delivered (AV:N over Adobe's AV:A); UI:R for the click, scope changed into the browser context, high confidentiality (session/token theft) but limited integrity and no availability impact.
Primary rating from Vendor (adobe).
CVSS VectorVendor: adobe
CVSS:3.1/AV:A/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H
Lifecycle Timeline
2DescriptionCVE.org
ColdFusion versions 2025.9, 2023.20 and earlier are affected by a reflected Cross-Site Scripting (XSS) vulnerability. An attacker could exploit this vulnerability to inject malicious scripts into a web page, potentially resulting in arbitrary code execution in the context of the current user. Exploitation of this issue requires user interaction in that a victim must open a malicious link. Scope is changed.
AnalysisAI
Reflected Cross-Site Scripting in Adobe ColdFusion 2025.9, 2023.20 and earlier lets an attacker craft a malicious link that, when opened by a victim, injects and executes attacker-controlled script in the victim's browser session, with Adobe characterizing the impact as potential arbitrary code execution in the context of the current user. Because the CVSS scope is changed and confidentiality, integrity and availability impacts are all rated High, a successful attack against an authenticated ColdFusion administrator could compromise the management interface. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | Exploitation requires the victim to open an attacker-crafted malicious link pointing at the vulnerable reflected endpoint (UI:R), and per the CVSS vector the attacker must reach the target over an Adjacent network (AV:A) rather than the open internet, limiting remote opportunistic abuse - this Adjacent qualifier is unusual for link-based XSS and should be confirmed with Adobe. … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | The CVSS 3.1 base score is 8.8 (High) driven by an unusual combination for a reflected XSS: AV:A (Adjacent), AC:L, PR:N, UI:R, S:C and C:H/I:H/A:H. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in. |
| Exploit Scenario | An attacker crafts a URL to a vulnerable ColdFusion endpoint embedding malicious JavaScript in a reflected parameter and sends it (e.g., via phishing) to a logged-in ColdFusion administrator on the same adjacent network segment. When the victim opens the link, the script executes in their authenticated session, allowing session/credential theft or actions in the administrative context. … |
| Remediation | Apply the security update referenced in Adobe Security Bulletin APSB26-68 (https://helpx.adobe.com/security/products/coldfusion/apsb26-68.html); upgrade ColdFusion 2025 beyond update 9 and ColdFusion 2023 beyond update 20 to the patched builds Adobe specifies in that advisory, as a patch is available per the vendor advisory and an exact fixed version should be taken directly from it rather than assumed. … Detailed patch versions, workarounds, and compensating controls in full report. |
Recommended ActionAI
Within 24 hours: audit all ColdFusion instances to identify versions 2025.9, 2023.20, or earlier; document administrator user accounts and access patterns. …
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External POC / Exploit Code
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