CVE-2024-54040
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 12.6, 11.4.7 and earlier are 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.
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 confidenceAdobe Connect versions 12.6, 11.4.7 and earlier contain a stored Cross-Site Scripting (XSS) vulnerability in vulnerable form fields. Attackers can inject malicious JavaScript payloads into these fields, which persist on the server. When victims browse to pages containing the affected fields, the malicious script executes in their browsers, potentially enabling session hijacking, credential theft, or further attacks against users.
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< 11.4.9>= 12.0, < 12.7CVSS 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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Determine installed Adobe Connect versionLog into the Adobe Connect admin console and navigate to the About page, or check the version file in the installation directory if you have direct server access. Compare your version against the affected ranges: versions < 11.4.9 OR versions 12.0 through 12.6 are vulnerable.Affected if Your installed version is < 11.4.9 OR is >= 12.0 but < 12.7
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Identify stored form fields that accept user inputReview Adobe Connect modules that store user-submitted data persistently, such as meeting room names, user profile fields, sco (content) titles, or custom fields in the meeting console where users can enter text that is saved to the server database.Affected if User-supplied data in stored form fields is not sanitized before saving and is rendered without output encoding when displayed to other users
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Search database for XSS payload patternsQuery the Adobe Connect database (typically SQL Server or PostgreSQL) for common XSS patterns in fields that store user input, such as script tags, javascript: URIs, event handlers like onload/onerror, or encoded variants. Examine tables that hold meeting metadata, user profiles, or content titles.Affected if Malicious JavaScript payloads are found stored in the database in any field that gets rendered in the web UI
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Verify output encoding is missing in rendering layerIf you have access to the source code or can examine HTTP responses in the browser developer tools, check if form field values are rendered with proper HTML encoding (entities like < > ") when displayed in the meeting room or admin interface.Affected if User input is rendered in the browser without HTML entity encoding, allowing scripts to execute
You are affected if your Adobe Connect version is 12.6 or earlier, or 11.4.7 or earlier, and any form fields that accept and store user input are rendered without proper output encoding, allowing stored XSS to execute.
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 · scoped11.4.912.7
Apply the vendor security update from Adobe for Adobe Connect. If immediate patching is not possible, implement output encoding and input validation on the affected form fields as a compensating control, and restrict access to the vulnerable functionality until the patch can be applied.
Adobe Connect 12.7 or 11.4.9 (depending on your current major version line)
- Backup your Adobe Connect installation and database before upgrading
- Verify your current Adobe Connect version via the admin dashboard or version check
- Download Adobe Connect 11.4.9 (for 11.x line) or 12.7 (for 12.x line) from the official Adobe distribution channel
- Stop the Adobe Connect service
- Install the upgrade following Adobe's standard upgrade procedure for your deployment type
- Start the Adobe Connect service
- Verify the new version is installed and the application functions normally
Generated from the published advisory — verify against the referenced sources before acting.
- Consultation4.0 h
- Implementation4.0 h
- Testing8.0 h
- Review / QA4.0 h
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Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2024-54040 — 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-2024-54040 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
- No spam, self-promotion, credentials, or personal data