CVE-2023-41704
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 · uneditedProcessing of CID references at E-Mail can be abused to inject malicious script code that passes the sanitization engine. Malicious script code could be injected to a users sessions when interacting with E-Mails. Please deploy the provided updates and patch releases. CID handing has been improved and resulting content is checked for malicious content. No publicly available exploits are known.
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 confidenceThis is a cross-site scripting (XSS) vulnerability in email processing where CID (Content-ID) references can bypass the sanitization engine. Attackers can inject malicious script code into emails that executes when users interact with the email content, allowing session hijacking or other client-side attacks.
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< 7.6.3> 7.6.3, < 7.10.6> 7.10.6, < 8.20= 7.6.3= 7.10.6CVSS 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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Identify Open Xchange Appsuite installationLocate the Open Xchange Appsuite installation directory and locate the version file or use the package manager to query the installed version (for example, 'rpm -q ox-appsuite' or 'dpkg -l ox-appsuite').Affected if Open Xchange Appsuite is installed and the version matches the affected ranges (< 7.6.3; = 7.6.3; > 7.6.3 to < 7.10.6; = 7.10.6; > 7.10.6 to < 8.20).
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Confirm email module is activeVerify that the email processing module is enabled in the Open Xchange configuration. Check for email-related configuration files in the Appsuite config directory or verify the 'imap' or 'mail' service is listed as active.Affected if The email module is enabled and processes inbound email, which is required for the CID bypass to be exploitable.
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Inspect CID handling configurationExamine the email sanitization or content filtering configuration files for settings related to CID (Content-ID) handling and HTML content processing. Look for any custom sanitization rules or exceptions for embedded content.Affected if CID references are processed without proper sanitization or there are whitelist entries that could allow bypass of the sanitization engine.
A user is affected if Open Xchange Appsuite version is lower than 8.20 and the email processing module is active, allowing CID references in emails to bypass sanitization and execute malicious scripts.
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 · scoped7.6.37.10.68.20
Deploy the vendor-provided updates and patch releases that improve CID handling and add malicious content checking for processed email content.
Upgrade to Open Xchange Appsuite version 8.20 or later
- Identify the current Open Xchange Appsuite version installed in the environment
- Backup the current installation and database before proceeding with the upgrade
- Schedule a maintenance window to minimize disruption
- Upgrade Open Xchange Appsuite to version 8.20 or later
- Verify the upgrade was successful by checking the version number
- Test email functionality to confirm CID reference handling works correctly
- Monitor system logs for any errors related to the upgrade
Generated from the published advisory — verify against the referenced sources before acting.
- Consultation2.0 h
- Implementation2.0 h
- Testing2.0 h
- Review / QA1.0 h
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Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2023-41704 — 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-2023-41704 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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A place for practitioners to share what actually worked: a mitigation you’ve tested, a configuration change, a version- or environment-specific caveat, or a link to a verified patch. The most useful notes rise to the top as peers upvote them, so the signal stays high.
- 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