CVE-2024-45511
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 · uneditedAn issue was discovered in Zimbra Collaboration (ZCS) through 10.1. A reflected Cross-Site Scripting (XSS) issue exists through the Briefcase module due to improper sanitization of file content by the OnlyOffice formatter. This occurs when the victim opens a crafted URL pointing to a shared folder containing a malicious file uploaded by the attacker. The vulnerability allows the attacker to execute arbitrary JavaScript in the context of the victim's session.
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 confidenceReflected XSS in Zimbra Collaboration Suite's Briefcase module via the OnlyOffice formatter. Attackers upload malicious files with improper sanitization to shared folders, then trick victims into accessing crafted URLs that trigger execution of arbitrary JavaScript within the victim's authenticated session context.
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< 10.0.9= 10.1.0CVSS 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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Identify Zimbra Collaboration Suite versionRun the ZCS version check command (zmcontrol -v or similar) or check the /opt/zimbra/.git_description file to determine the installed versionAffected if The installed version is below 10.0.9 or exactly 10.1.0
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Confirm Briefcase module is enabledVerify that the Briefcase feature is activated for your ZCS deployment via admin console or CLI (zmprov га)Affected if Briefcase module is enabled and accessible to users
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Verify OnlyOffice integration is configuredCheck the OnlyOffice connector configuration in the ZCS admin settings or the /opt/zimbra/conf directoryAffected if OnlyOffice integration is enabled for document handling in Briefcase
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Check for shared Briefcase foldersReview shared folder permissions and recent uploads via admin console or user mailbox queriesAffected if Shared Briefcase folders exist and allow file uploads from other users
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Audit recent Briefcase uploads for suspicious filesInspect recent file uploads to shared folders, looking for files with unusual names or unexpected file types that may indicate exploitation attemptsAffected if Suspicious or unexpected files are found in shared Briefcase folders
You are affected if your ZCS version is below 10.0.9 or exactly 10.1.0, and both the Briefcase module and OnlyOffice integration are enabled with accessible shared folders.
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 · scoped10.0.9
Upgrade Zimbra Collaboration Suite to a version beyond 10.1 that includes the patch for this vulnerability; users should avoid clicking untrusted links to shared Briefcase folders as a temporary precaution.
ZCS 10.0.9 or later for 10.0.x line; ZCS 10.1.1 or later for 10.1.x line
- 1. Identify the current Zimbra Collaboration Suite version by running: zmcontrol -v or checking the admin console
- 2. For ZCS 10.0.x versions: Plan upgrade to version 10.0.9 or later (10.0.10, 10.0.11, etc.)
- 3. For ZCS 10.1.0: Plan upgrade to version 10.1.1 or later
- 4. Review Zimbra upgrade documentation and create a backup of the current installation
- 5. Schedule maintenance window as upgrades require service downtime
- 6. Execute the upgrade following Zimbra's standard upgrade procedure for the specific version
Generated from the published advisory — verify against the referenced sources before acting.
- Consultation4.0 h
- Implementation12.0 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-2024-45511 — 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-2024-45511 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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