Security readout for executives and security teams
Plain-English summary
CVE-2023-40931 is an authenticated SQL injection issue in Nagios XI 5.11.0 through 5.11.1. A logged-in attacker could send crafted input to a Nagios XI admin helper endpoint and run arbitrary database commands. The provided sources do not include CVSS scoring, a named patch version, or evidence of active exploitation.
Executive priority
Treat this as a high-priority exposure check for Nagios XI environments. The issue affects a narrow version range, but arbitrary SQL execution in monitoring infrastructure can threaten sensitive operational data and system integrity.
Technical view
The flaw is in the ID parameter of POST requests to /nagiosxi/admin/banner_message-ajaxhelper.php. The CVE description says authenticated attackers can execute arbitrary SQL commands. Available source data does not identify CWE, CVSS, exploit maturity, or vendor-confirmed remediation details beyond the affected Nagios XI version range.
Likely exposure
Exposure appears limited to Nagios XI deployments running versions 5.11.0 or 5.11.1 where authenticated users can reach the affected admin helper endpoint. Internet exposure, account scope, and deployment configuration are not described in the provided sources.
Exploitation context
The source bundle does not show CISA KEV listing or cited evidence of active exploitation. Exploitation requires authentication according to the CVE description. Public technical discussion is referenced, but the provided bundle does not include validated exploit status.
Researcher notes
The public bundle is sparse: no CVSS, CWE, CPEs, or patch identifier are included. Analysis should stay anchored to Nagios XI 5.11.0-5.11.1 and the authenticated SQL injection described for the banner_message AJAX helper.
Mitigation direction
- Identify any Nagios XI 5.11.0 or 5.11.1 instances.
- Review Nagios security guidance for fixed versions or vendor remediation.
- Restrict Nagios XI access to trusted administrative networks.
- Audit Nagios XI accounts for unnecessary or stale access.
- Monitor database and application logs for suspicious authenticated activity.
Validation and detection
- Confirm the running Nagios XI version on each deployment.
- Verify whether /nagiosxi/admin/banner_message-ajaxhelper.php is reachable by authenticated users.
- Review vendor security advisories for remediation status.
- Check application logs for unusual POST activity to the affected endpoint.
- Document compensating controls around authentication and administrative access.
Public sources used
Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.
Conservative CVE-to-ATT&CK context
These mappings and lookup hints may be relevant to the vulnerability behavior, CWE, affected product, or exposure path. Glexia-inferred context is not an official MITRE, ATT&CK, CWE, or CVE Program mapping.
ATT&CK lookup starting points
Use these exact CWE pages and searches to review the Glexia ATT&CK library from this CVE's weakness and description context.
Database behavior lookup
The CVE wording references database injection or access, so collection and exfiltration review may help. This is a Glexia inferred lookup path, not an official MITRE, ATT&CK, or CVE Program mapping.
Open ATT&CK lookupCVE-2023-40931 mapping review
Open the CVE-to-ATT&CK bridge for reviewed, inferred, or future official mappings tied to this CVE.
Open ATT&CK lookup- Severity
- Unknown
- CVSS
- Not scored
- Known Exploited
- No
- Published
CNA and ADP enrichment extracted from CVE v5
These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.
SSVC decision data
Vulnerability timeline
Timeline events are normalized from CVE metadata, CNA source timelines, ADP timelines, and KEV metadata when present.
- CVE reservedCVE Program
The CVE ID was reserved by the assigning CNA.
- CVE publishedCVE Program
The CVE record was published.
- CVE updatedCVE Program
The CVE record metadata indicates this as the latest update time.
ADP provider summaries
Source materials
- CVE List V5 sourceCVE List V5
- https://www.nagios.com/products/security/CVE reference, mitre
- https://outpost24.com/blog/nagios-xi-vulnerabilities/CVE reference, mitre
Products and packages named in the record
CWE details
CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.