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Adobe Experience Manager CVE-2026-106629

| EUVDEUVD-2026-100532 CRITICAL
Cross-site Scripting (XSS) (CWE-79)
2026-10-13 psirt@adobe.com GHSA-wg2j-5444-h7rw
9.3
CVSS 3.1 · Vendor: adobe
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Attack ChainAIDerived

Hypothetical attack flow derived from CVE metadata – not a confirmed exploit chain

  1. Access
    Inject malicious script into vulnerable AEM form field
  2. Exploit
    Payload stored server-side in component
  3. Execution
    Victim browses to affected page
  4. Impact
    Script executes in victim browser, hijacking session/account

Vulnerability Assessment

Weakness
CWE
OWASP Top 10:2025
A05:2025 - Injection
ASVS 5.0
V1 - Encoding and Sanitization Output encoding, context-aware escaping
MITRE ATT&CK

2 techniques across 2 tactics: Initial Access, Execution

The technique list with ATT&CK links and the kill-chain view is part of the Basic plan and up.

Exploitation Conditions

Exploitation requires (1) the attacker to be able to persist a crafted JavaScript payload into one of the affected Adobe Experience Manager form fields, and (2) a victim to subsequently browse to the page that renders that field (UI:R), at which point the script runs in the victim's browser session. Affected deployments are AEM 6.5 LTS up to and including SP3 and AEM 6.5 up to and including 6.5.25; environments on patched versions per APSB26-152 are not exploitable. The primary limiting factors are the required victim interaction (the payload is dormant until the page is viewed) and the likely need for some level of content-submission access to store the payload in the first place, despite the vendor's PR:N rating.

Impact

Adobe-assigned CVSS 3.1 score is 9.3 (Critical) with vector AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:N, indicating a network-reachable, low-complexity stored XSS with a scope change and high confidentiality/integrity impact. The high score is driven largely by PR:N combined with the changed scope (code executes in the victim's authenticated browser context, a separate security authority). However, the signal set is thin: no EPSS probability, no CISA KEV listing, and no public exploit code are present in the input, so there is no evidence of active or imminent exploitation. A notable tension exists between the Adobe PR:N rating and the nature of stored XSS in AEM form fields - persisting a malicious payload typically requires some ability to submit or author content, which in many AEM deployments implies at least a low-privileged account rather than a fully anonymous attacker; this should be verified against the specific affected form component. Additionally, UI:R is a real limiting factor: the payload only fires when a victim navigates to the affected page, so this is not a point-and-click wormable flaw. Net assessment: a legitimately high-severity client-side flaw worth prioritizing for AEM operators given the product's enterprise footprint and scope change, but in the absence of EPSS/KEV/POC it reads as a high-CVSS issue without confirmed real-world exploitation rather than an emergency zero-day.

Exploit ScenarioDerived

An attacker stores a malicious JavaScript payload in a vulnerable Adobe Experience Manager form field; when an authenticated user (e.g., a content author or administrator) later browses to the page rendering that field, the script executes in their browser under the AEM origin. This can be leveraged to hijack the victim's session or escalate access to their account. No public proof-of-concept exploit is identified in the provided data.

Act Now Prioritize within 24-48h. Why: CRITICAL severity.
No patch listed yet 0.7% exploitation probability (EPSS)

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AnalysisAIv1 – Oct 13, 2026

Stored cross-site scripting in Adobe Experience Manager 6.5 LTS (through SP3) and AEM 6.5 (through 6.5.25) lets an attacker persist a malicious JavaScript payload into a vulnerable form field, which then executes in the browser of any user who views the page rendering that field, yielding high confidentiality and integrity impact with a scope change into the victim's session. Adobe rates this Critical at CVSS 9.3 (AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:N), while independent assessment scores it lower on the privilege axis at PR:L, reflecting the practical requirement that the attacker be able to submit or store content before triggering execution; all versions converge on UI:R, since the payload remains dormant until a victim browses the affected page. No public exploit code has been identified at time of analysis and the CVE is not listed in CISA KEV, though the high CVSS score and the authoring-console reachability of AEM make prompt patching per Adobe advisory APSB26-152 advisable.

RemediationAI

Upgrade Adobe Experience Manager to the fixed versions published in Adobe security bulletin APSB26-152 (https://helpx.adobe.com/security/products/experience-manager/apsb26-152.html), which covers both the 6.5 LTS track (beyond SP3) and the 6.5 quarterly track (beyond 6.5.25); patch availability is confirmed per vendor advisory, though no single exact fix build number is enumerated in the supplied data, so consult the bulletin for the precise hotfix or service pack applicable to your deployment. Until upgrading, compensating controls that meaningfully reduce exposure include restricting author and form-submission access to trusted networks or VPN (the trade-off being reduced accessibility for distributed authoring teams), enabling a Content Security Policy with nonce- or hash-based script restrictions on AEM publish and author tiers to blunt inline script execution (which may break legitimate third-party embeds and require tuning), deploying a WAF or reverse-proxy rule set that strips script-bearing input on AEM form endpoints (imperfect coverage, since encoded and stored payloads can evade signature rules), and reviewing/auditing stored form content for injected markup using AEM's content repository tooling - noting that none of these substitute for the vendor patch, as the underlying missing output encoding remains present until upgraded.

Affected VersionsENISA

Adobe Experience Manager 6.5 LTS 0 ≤6.5 LTS SP3
Adobe Experience Manager 6.5 0 ≤6.5.25

Affected Packages

euvd adobe_experience_manager_6_5 no fix

Source: OSV (Open Source Vulnerabilities)

Affects your stack

Affects 1 package in euvd

Checking this CVE against your own stacks and servers is part of the Basic plan and up.

Technical ContextAI · show details

The root cause class is CWE-79 (Improper Neutralization of Input During Web Page Generation), specifically the persistent/stored variant: user-supplied input accepted into an AEM form field is stored server-side and later re-emitted into a page without adequate output encoding or sanitization, so injected markup and script tags survive round-trips through the repository. Adobe Experience Manager is a Java-based enterprise content management platform built on Apache Sling and the Jackrabbit/Oak content repository, and its forms functionality (Adaptive Forms and related form components) is a common authoring and lead-capture surface exposed to authors and, in some configurations, to publish-side visitors. The CVSS 3.1 vector AV:N/AC:L/UI:R/S:C/C:H/I:H/A:N describes a network-reachable, low-complexity attack requiring victim interaction, with a scope change indicating that the script executes with the privileges of the victim's browser origin rather than the injected component's context - the mechanism by which session tokens, cookies, or authenticated authoring actions can be hijacked. Confidentiality and integrity are both rated High while availability is not affected, consistent with an account/session compromise rather than denial of service. Note the rating discrepancy: Adobe assigns PR:N (no privileges required), whereas independent assessment concludes PR:L, since storing a payload in a form field realistically presupposes some level of content-submission or authoring access.

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Severity by source

Vendor (adobe) PRIMARY 9.3 CRITICAL
AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:N
vuln.today AI 8.7 HIGH

Stored XSS in AEM form fields typically requires low-privileged content-submission access (PR:L) and victim page navigation (UI:R); execution in the victim's authenticated context changes scope (S:C) with high C/I and no availability impact.

3.1 AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:N
4.0 AV:N/AC:L/AT:N/PR:L/UI:P/VC:H/VI:H/VA:N/SC:L/SI:L/SA:N

Primary rating from Vendor (adobe).

CVSS VectorVendor: adobe

Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
Required
Scope
Changed
Confidentiality
High
Integrity
High
Availability
None

DescriptionCVE.org

Adobe Experience Manager is affected by a stored Cross-Site Scripting (XSS) vulnerability that could be abused by an attacker to inject malicious scripts into vulnerable form fields. Malicious JavaScript may be executed in a victim's browser when they browse to the page containing the vulnerable field, potentially gaining elevated access or control over the victim's account or session. Scope is changed.

Executive ViewAI

Why It Matters

Adobe Experience Manager (AEM) 6.5 LTS (through SP3) and AEM 6.5 (through 6.5.25) contain a critical stored cross-site scripting flaw (CVE-2026-106629) that could allow attackers to execute malicious scripts in the browsers of authenticated users, potentially leading to session compromise and data exposure. While no public exploit code has been identified, the high severity and lack of a vendor patch demand immediate risk mitigation to protect content integrity and user trust.

Business Impact: High
Compensating Controls

No vendor-released patch identified at time of analysis. Interim mitigations include restricting access to AEM authoring interfaces, deploying WAF rules to block XSS payloads, disabling vulnerable form components, enforcing CSP, and monitoring for anomalous script injections.

Threat Intelligence Overview

EPSS Score
0.7%
Top 49% exploitable
Prevalence
High
widely-deployed enterprise CMS/DXP across large organizations
Data Quality
5 sources
Confidence: Medium

How this decision was reached

The engine reads each signal below and applies a fixed list of rules from top to bottom. The first rule that matches sets the recommended action – like a statement, every line is shown.

SignalValue
Severity CRITICAL
CISA KEV No
Public POC No
EPSS 0.7%
Patch available No
Active threat No
Deciding rule
CRITICAL severity
What every action level means
Emergency Immediate action required. Criteria: CRITICAL + in CISA KEV (actively exploited) without patch, OR CRITICAL + EPSS > 30% without patch, OR CRITICAL + active threat signals without patch.
Act Now Prioritize within 24-48h. Criteria: in KEV with patch available, OR CRITICAL + public POC, OR HIGH + EPSS > 10%, OR CRITICAL + active threat, OR any CRITICAL severity.
This Week Schedule remediation this week. Criteria: HIGH severity (CVSS 7.0-8.9). Patch within normal change window.
This Month Plan within 30 days. Criteria: MEDIUM severity (CVSS 4.0-6.9), lower exploitation probability. Include in regular patch cycle.
Monitor Track and reassess. Criteria: LOW severity (CVSS 0.1-3.9), minimal exploitation risk. No immediate action needed.

SSVC AssessmentENISA

SSVC Decision· derived
Scheduled
Exploitation· derived
None
System Exposure· derived
Open
Automatable· derived
No
Human Impact
High

Priority Score

47
Low Medium High Critical
KEV: 0
EPSS: +1
CVSS: +46
PoC: 0
Weaponized: 0
Threat intel: 0
Gov advisory: 0

Attack Technique

Cross-Site Scripting occurs when an application accepts untrusted data and sends it to a web browser without proper validation or encoding.

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