CVE-2024-4456
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 · uneditedIn affected versions of Octopus Server with certain access levels it was possible to embed a Cross-Site Scripting payload on the audit page.
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 confidenceAuthenticated Cross-Site Scripting (XSS) vulnerability in Octopus Server's audit page allows users with certain access levels to inject malicious scripts via the audit functionality.
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>= 3.0.0, < 2023.4.8338>= 2024.1.437, < 2024.1.11127CVSS 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 Octopus Server versionRun 'octopus.server --version' or check the About page in the Octopus UI. On Windows, also check the executable properties or use 'Get-ItemProperty' on the server executable.Affected if The version is >= 3.0.0 and < 2023.4.8338, OR >= 2024.1.437 and < 2024.1.11127
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Verify audit functionality is accessibleLog into Octopus Server as a user and navigate to the audit section (typically /api/events or the Audit UI page). Check if the authenticated user role includes audit access.Affected if User has permissions to create or view audit entries and the audit page is accessible in the UI or API
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Confirm audit page displays user-supplied dataUse the audit feature to create a test entry with a benign string (like '<script>test</script>') in an auditable field, then view that entry on the audit page to see if it renders as plain text or executes as HTML.Affected if The output renders as HTML (executing any script tags) rather than being HTML-encoded as plain text
A user is affected if their Octopus Server version falls within the affected ranges AND they have authenticated access to the audit functionality where user-supplied data is rendered without encoding.
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 · scoped2023.4.83382024.1.11127
Apply available vendor patches for Octopus Server and implement output encoding for user-supplied data displayed on audit pages.
Upgrade to Octopus Server 2023.4.8338 (LTS) or 2024.1.11127 or later
- Identify your current Octopus Server version by navigating to the System menu > About page
- If running version 2023.0.0 through 2023.3.x (any version < 2023.4.8338), upgrade to version 2023.4.8338 or later in the 2023.4 LTS line
- If running version 2024.1.437 through 2024.1.11126 (any version >= 2024.1.437 but < 2024.1.11127), upgrade to version 2024.1.11127 or later in the 2024.1 line
- Follow standard Octopus Server upgrade procedures: back up your database, stop the Octopus service, run the installer for the new version, and verify the upgrade completes successfully
- After upgrade, verify the audit page functionality and confirm the XSS vulnerability is remediated
Generated from the published advisory — verify against the referenced sources before acting.
- Consultation2.0 h
- Implementation6.0 h
- Testing3.0 h
- Review / QA2.0 h
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Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2024-4456 — 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-2024-4456 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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