Security readout for executives and security teams
Plain-English summary
Older versions of Nagios XI, a popular IT monitoring product, contain a flaw on the dashboard that lets an attacker craft a malicious link. If a logged-in user clicks it, the attacker's script runs in their browser session, potentially stealing data or hijacking actions inside the monitoring console. Upgrading to a fixed release removes the risk.
Executive priority
Low-to-moderate priority. Patch as part of standard maintenance unless a vulnerable legacy Nagios XI is internet-facing or accessed by privileged staff, in which case schedule an expedited upgrade. No evidence of active exploitation, but legacy versions of monitoring tooling carry compounded risk.
Technical view
Nagios XI prior to 2012R1.6 has a reflected XSS (CWE-79) in the dashboard dashlet AJAX load functionality. User-supplied input is reflected without sufficient validation or output encoding, allowing arbitrary script execution in the victim's browser context. CVSS 4.0 base 5.1 (AV:N/AC:L/PR:N/UI:A) reflects network-reachable, low-complexity, unauthenticated trigger requiring user interaction.
Likely exposure
Affects organizations running legacy Nagios XI installs older than 2012R1.6. Most relevant to enterprises with internet-exposed or shared monitoring portals; far less impactful where Nagios XI is reachable only by a small set of trusted operators on isolated networks.
Exploitation context
Not listed in CISA KEV and no public reports of active exploitation are cited in the source bundle. Exploitation requires user interaction (clicking a crafted link) and a vulnerable version. The advisory was published in 2025 against a long-patched 2012-era release, so most current Nagios XI deployments should already be remediated.
Researcher notes
Reflected XSS in the dashlet AJAX load path; CWE-79 with UI:A means delivery requires social engineering of an authenticated operator. Sources do not name the exact parameter or payload context, so validation should focus on version verification rather than payload reproduction. Treat as a session-impact issue against monitoring console privileges.
Mitigation direction
- Upgrade Nagios XI to 2012R1.6 or any later supported release per vendor changelog.
- Restrict Nagios XI access to trusted networks via VPN, IP allowlists, or SSO gateway.
- Enforce a strict Content-Security-Policy and HttpOnly session cookies on the Nagios XI host.
- Train monitoring operators to avoid clicking unsolicited Nagios XI dashboard links.
Validation and detection
- Check the Nagios XI version banner or About page against 2012R1.6 release threshold.
- Review vendor changelog and patch history for confirmation the dashlet fix is applied.
- Inspect web logs for unusual query strings hitting dashlet AJAX load endpoints.
- Confirm administrative interface is not exposed to untrusted networks via external scan.
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 lookupCVE-2013-10071 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
- 5.1 (4.0)
- Known Exploited
- No
- Published
Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:N/SC:L/SI:L/SA: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:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N——Primary CVE scoreVulnerability scoring details
Base CVSS 4.0 score
5.1MediumVector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N
Source materials
- CVE List V5 sourceCVE List V5
- https://www.nagios.com/changelog/nagios-xi/CVE reference · release-notes, patch
- https://www.vulncheck.com/advisories/nagios-xi-reflected-xss-via-dashlet-ajax-load-functionalityCVE reference · third-party-advisory
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.