CVE-2023-26430
3.5 · LOWOverview
CVE-2023-26430 is a low-severity vulnerability affecting open-xchange open-xchange_appsuite_backend. It was published on August 2, 2023 and has a CVSS 3.1 base score of 3.5 (LOW).
This vulnerability has a CVSS 3.1 base score of 3.5, rated LOW. It can be exploited remotely over the network. Some level of privileges is required for exploitation.
Technical Description
Attackers with access to user accounts can inject arbitrary control characters to SIEVE mail-filter rules. This could be abused to access SIEVE extension that are not allowed by App Suite or to inject rules which would break per-user filter processing, requiring manual cleanup of such rules. We have added sanitization to all mail-filter APIs to avoid forwardning control characters to subsystems. No publicly available exploits are known.
Remediation
Check the references section for vendor advisories and patches from open-xchange. Update open-xchange_appsuite_backend to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.
Affected Products
| Vendor | Product | Versions | Status |
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References
Frequently Asked Questions
What is CVE-2023-26430?
CVE-2023-26430 is a low-severity vulnerability affecting open-xchange open-xchange_appsuite_backend. It was published on August 2, 2023 and has a CVSS 3.1 base score of 3.5 (LOW).
How severe is CVE-2023-26430?
This vulnerability has a CVSS 3.1 base score of 3.5, rated LOW. It can be exploited remotely over the network. Some level of privileges is required for exploitation.
How do I fix or remediate CVE-2023-26430?
Check the references section for vendor advisories and patches from open-xchange. Update open-xchange_appsuite_backend to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.
How can CyberStrike help with CVE-2023-26430?
CyberStrike's AI-powered security agents can automatically detect CVE-2023-26430 across your infrastructure using autonomous pentesting, DAST scanning, and HackBrowser. The platform continuously monitors for known vulnerabilities and provides actionable remediation guidance prioritized by real-world exploitability.
How CyberStrike Helps
AI agents map your attack surface to find vulnerabilities like this one.
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