CVE-2022-45913
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) 9.0. XSS can occur via one of attributes in webmail URLs to execute arbitrary JavaScript code, leading to information disclosure.
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 confidenceCross-Site Scripting (XSS) vulnerability in Zimbra Collaboration Suite 9.0 allows injection of arbitrary JavaScript code through URL parameters in the webmail interface, potentially enabling session hijacking or information disclosure.
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= 8.8.15= 9.0.0CVSS 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
- None
- User interaction
- Required
- Scope
- Changed
- Confidentiality
- Low
- Integrity
- Low
- Availability
- None
CVSS:3.1/AV:N/AC:L/PR:N/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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Confirm Zimbra webmail is accessibleAttempt to access the Zimbra webmail login page (typically at /zimbra or /webmail on the server). If the page loads, the webmail component is exposed.Affected if The webmail interface is accessible and URL parameters can be manipulated by unauthenticated users.
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Identify installed Zimbra versionCheck the Zimbra version by running 'zmcontrol -v' as the zimbra user, or inspect the installed packages via the package manager (e.g., 'rpm -qa | grep zimbra' or 'apt list --installed | grep zimbra').Affected if The installed version is 8.8.15 or 9.0.0 exactly, as these are the affected versions listed.
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Verify webmail URL parameter handlingObserve whether the webmail application reflects URL parameters back into the page without visible sanitization. A simple test involves appending a test parameter (e.g., ?test=123) to the webmail URL and checking if it appears in the response.Affected if URL parameters are reflected in the HTML response without encoding or validation, indicating potential XSS vulnerability.
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Check for security controls on webmailReview any WAF (Web Application Firewall) or reverse proxy rules that may inspect or sanitize incoming URL parameters before they reach the Zimbra webmail application.Affected if No input validation, output encoding, or WAF protection exists for URL parameters in the webmail interface.
You are affected if Zimbra version 8.8.15 or 9.0.0 is installed AND the webmail interface is accessible via URL, with no input validation or encoding applied to URL parameters.
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 · scopedApply vendor patch when available; implement input validation and output encoding on URL parameters in the webmail component. Until patched, users should avoid clicking untrusted links to Zimbra webmail.
Next stable ZCS release containing CVE-2022-45913 fix (check Zimbra security wiki for specific fixed version)
- Verify current ZCS version using: zmcontrol -v or apt list --installed | grep zimbra
- Review Zimbra security advisories at https://wiki.zimbra.com/wiki/Security_Fixes for the specific patch for CVE-2022-45913
- If a patch is available, download and apply it per Zimbra documentation
- If no patch is available, plan upgrade to the next stable ZCS release that includes the security fix
- Before upgrading in production, test the upgrade in a staging environment
- Back up the current ZCS installation and all mail stores before proceeding
- Schedule maintenance window as upgrade may require service interruption
- Execute upgrade following Zimbra upgrade documentation for your current version
Generated from the published advisory — verify against the referenced sources before acting.
- Consultation6.0 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-2022-45913 — 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-2022-45913 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