CVE-2026-27246
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 Connect versions 2025.3, 12.10 and earlier are affected by a DOM-based 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.
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 · high confidenceA DOM-based Cross-Site Scripting (XSS) vulnerability in Adobe Connect versions 2025.3, 12.10 and earlier allows attackers to inject malicious scripts into web pages through manipulated URL parameters or compromised web content. The vulnerability operates on the client-side, where JavaScript processes and renders user-controlled data without proper sanitization, potentially allowing session hijacking or account compromise.
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< 12.11<= 2025.3< 2025.9.15CVSS 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
- None
- User interaction
- Required
- Scope
- Changed
- Confidentiality
- High
- Integrity
- High
- Availability
- None
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/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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Check Adobe Connect server versionAccess the Connect server admin interface or check the installer version. In the admin dashboard, navigate to the 'About' or 'Version' section. Alternatively, run 'msiexec /x' on the installer file or check the application's help > about dialog.Affected if The installed version is lower than 12.11 (e.g., 12.10 or earlier)
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Check Adobe Connect Desktop Application versionOpen the desktop application and navigate to Help > About Adobe Connect Desktop, or right-click the desktop shortcut and select Properties to view version information.Affected if The version is 2025.3 or earlier, OR any version lower than 2025.9.15
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Inspect URL handling behavior (optional)If you have access to Adobe Connect web pages, examine the browser's developer console for any JavaScript errors when navigating with URL parameters containing special characters (e.g., ?param=<script>alert(1)</script>). Check if these parameters are reflected in the DOM without encoding.Affected if User-controlled URL parameters are rendered directly in the page without sanitization
Your environment is affected if Adobe Connect server is below version 12.11 OR Adobe Connect Desktop Application is 2025.3 or earlier / below 2025.9.15, and users could potentially click manipulated URLs.
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 · scoped12.112025.9.15
Update Adobe Connect to the latest patched version provided by Adobe. Until patched, users should avoid clicking untrusted URLs and organizations should implement Content Security Policy (CSP) headers to mitigate XSS execution.
Adobe Connect 12.11 or later; Adobe Connect Desktop Application 2025.9.15 or later
- For Adobe Connect: Upgrade to version 12.11 or later
- For Adobe Connect Desktop Application: Upgrade to version 2025.9.15 or later
- After upgrading, verify that the XSS vulnerability is no longer present by testing the application
- Ensure all users log out and log back in after the upgrade to clear any potentially compromised sessions
Generated from the published advisory — verify against the referenced sources before acting.
- Consultation4.0 h
- Implementation8.0 h
- Testing12.0 h
- Review / QA6.0 h
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Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2026-27246 — 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-2026-27246 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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