Security readout for executives and security teams
Plain-English summary
Nagios XI has a stored XSS issue in the NOC Operation Center audio upload feature. A low-privileged authenticated user could store malicious browser content that runs when another user, including an administrator, views it. This is not a system takeover by itself, but it can help steal session data or perform actions in a victim's browser.
Executive priority
Handle as a moderate-priority remediation. It is not listed as actively exploited, but it affects a security monitoring platform and can impact administrator sessions if abused by an authenticated user.
Technical view
CVE-2023-51072 is CWE-79 stored XSS in Nagios XI NOC, reported for versions up to and including 2024R1. The vector requires network access, low privileges, and user interaction. CVSS 3.1 is 5.4 with changed scope and low confidentiality and integrity impact.
Likely exposure
Organizations running Nagios XI up to and including 2024R1 are the relevant exposure group, especially where many users can access the Operation Center. The source bundle does not provide CPEs or a full affected-version matrix.
Exploitation context
The sources do not report active exploitation, and CISA KEV is false. Exploitation requires an authenticated low-privileged user and a victim user interaction, so insider, compromised-account, or weak-access-control scenarios are most relevant.
Researcher notes
Evidence is limited. The CVE description names Nagios XI NOC through 2024R1, but the affected product fields are marked n/a and no specific fixed version is included in the bundle. Avoid assuming broader Nagios products are affected.
Mitigation direction
- Check Nagios XI security guidance for fixed versions and vendor instructions.
- Prioritize upgrading Nagios XI if vendor guidance identifies a fixed release.
- Restrict Nagios XI access to trusted authenticated users until resolved.
- Review Operation Center audio upload permissions where configurable.
- Monitor Nagios XI for suspicious uploads or unexpected admin activity.
Validation and detection
- Inventory Nagios XI instances and record their exact versions.
- Confirm whether any instance is up to and including 2024R1.
- Review who can access the NOC Operation Center upload functionality.
- Check vendor guidance for the applicable remediation state.
- Review logs for suspicious uploaded content or unusual privileged actions.
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.
CWE-79: User-session and phishing behavior lookup
Client-side and session-facing weaknesses should be reviewed alongside initial-access and user-execution behaviors. Open the exact CWE lookup page first, then review the ATT&CK searches from that MITRE weakness context. This is a Glexia lookup hint, not an official ATT&CK mapping.
Open ATT&CK lookupFile access behavior lookup
The CVE wording references file access or upload behavior, so file telemetry and web shell review may help. This is a Glexia inferred lookup path, not an official MITRE, ATT&CK, or CVE Program mapping.
Open ATT&CK lookupCVE-2023-51072 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
- Medium
- CVSS
- 5.4 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N
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.
CVSS vector scores
1 official scoreWe collect every scored CVSS vector available in the official CNA and ADP containers. When more than one version is present, the table keeps the source vectors side by side instead of collapsing them into the highest score.
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N2.32.7Primary CVE scoreVulnerability scoring details
Base CVSS 3.1 score
5.4MediumVector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N
Source materials
- CVE List V5 sourceCVE List V5
- https://www.nagios.com/products/security/#nagios-xiCVE reference
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.
Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.