CVE-2026-27253
Official description Straight from the sourceThe vendor's or NVD's own wording, published unedited. Authoritative, but often terse — it says what broke, rarely what to do.
NVD · uneditedAdobe Experience Manager versions 6.5.23 and earlier are affected by a stored Cross-Site Scripting (XSS) vulnerability that could be abused by a low-privileged 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.
Technical summary Written by usOur analysis, written from the advisory, the CVSS vector and the affected-version data. It adds context the advisory leaves out, and never invents facts that are not in the source.
dbcve analysis · moderate confidenceAdobe Experience Manager versions 6.5.23 and earlier contain a stored Cross-Site Scripting (XSS) vulnerability in form fields that allows low-privileged authenticated users to inject malicious JavaScript payloads. These payloads persist on the server and execute in the browsers of users who view pages containing the compromised form fields.
Verify against the referenced sources before acting — the references below are authoritative for this CVE, this summary is not.
Affected products & versions What the vendor confirmedThe version ranges the vendor confirmed as vulnerable. If your version sits inside a range here, treat yourself as exposed until you have upgraded.
NVD · CPE data< 6.5.24< 2026.2.0= 6.5CVSS breakdown How the score is builtThe industry scoring standard. It rates how the flaw is reached, what it takes to exploit, and what an attacker gains — the score is derived from those, not the other way round.
From the vector- Attack vector
- Network
- Complexity
- Low
- Privileges
- Low
- User interaction
- Required
- Scope
- Changed
- Confidentiality
- Low
- Integrity
- Low
- Availability
- None
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N
Am I affected? How to checkSteps we derive from the advisory and the affected-version data, so you can decide whether this CVE reaches your setup. They are a guide, not a scan — your own configuration is the authority.
dbcve checksWork through these to decide whether this CVE applies to you.
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Verify Adobe Experience Manager versionAccess the AEM Welcome page or check the product version via the system console at /system/console/configMgr or by viewing the manifest file in the installation directory. Common locations: crx-quickstart folder or the about.html page.Affected if The installed version is 6.5.x where x is 23 or lower, OR the version is 6.5 (any patch level), OR the version is below 2026.2.0 (for newer release trains).
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Confirm Forms or Adaptive Forms module is enabledNavigate to /libs/fd/faf/forms if accessible, or check the AEM Forms service bundle status at /system/console/bundles. Look for 'AEM Forms' or 'Adaptive Forms' packages in the installed packages list.Affected if AEM Forms or Adaptive Forms modules are installed and enabled, as the XSS vulnerability exists in form fields used by these components.
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Inspect form field configurations for content handlingReview form field definitions in CRX/DE (Content Repository) at /apps or /libs, specifically looking at form components under /libs/foundation/components or /libs/fd/af/components. Check if input validation and output encoding settings are present.Affected if Form fields allow raw HTML input or lack proper input validation/sanitization configurations, enabling stored XSS payloads to persist.
You are affected if your AEM version is 6.5.23 or earlier, 6.5, or any version below 2026.2.0, AND you have AEM Forms or Adaptive Forms enabled with form fields accessible to low-privileged users.
Generated from the published advisory. Verify against your own configuration.
Remediation Closing itWhat it takes to close this. Where a vendor fix exists we point at it; where none exists we say so plainly, and can build one. Effort estimates are scoped from the advisory, not from your codebase.
dbcve · scoped6.5.242026.2.0
Upgrade Adobe Experience Manager to a version newer than 6.5.23. Additionally, implement output encoding and Content Security Policy (CSP) headers to mitigate XSS execution.
6.5.24 (or later 6.5.x) / 2026.2.0 (or later for cloud)
- Upgrade Adobe Experience Manager to version 6.5.24 or later
- For Adobe Experience Manager cloud customers, upgrade to 2026.2.0 or later
- After upgrade, verify the XSS vulnerability is remediated by testing form fields that could accept user input
- Confirm that stored scripts are no longer executable in victim browsers
Generated from the published advisory — verify against the referenced sources before acting.
- Consultation4.0 h
- Implementation8.0 h
- Testing6.0 h
- Review / QA2.0 h
An estimate, not a bill — we confirm scope with you before any work starts. Need it this week? Rush from $5,600.
Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2026-27253 — or any other known-vulnerable package — straight from your lock files. Free and open source; it runs locally and uploads nothing.
References Go to the primary sourcePrimary sources — vendor advisories, patches and trackers. Where our summary and a reference disagree, the reference wins.
Primary sourcesPractitioner notes
ContributedPeer-ranked notes from engineers who’ve handled CVE-2026-27253 in production — separate from our analysis above.
The advisory tells you what broke. It rarely tells you what actually worked. If you’ve dealt with this one, that detail is what the next engineer is searching for.
- The version that genuinely resolved it — not the one the vendor claimed
- A config change or rule that shut the vector down
- A gotcha in the upgrade path that cost you an afternoon
No notes yet
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- Verified mitigations, workarounds, and config changes
- Version or environment caveats, and links to real fixes
- No weaponised exploit code, or anything meant to cause harm
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