CVE-2026-103664

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Source
https://cve.org/CVERecord?id=CVE-2026-103664
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-103664.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2026-103664
Published
2026-10-01T08:55:51Z
Modified
2026-10-04T02:46:29Z
Severity
  • 4.8 (Medium) CVSS_V4 - CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:A/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N CVSS Calculator
Summary
MISP Reflected Cross-Site Scripting via Unsanitized Analyst Data Seed Parameter
Details

MISP contains a reflected cross-site scripting (XSS) vulnerability in the analyst data notes panel. The seed path parameter, supplied by the user via the URL, was passed directly into inline JavaScript within the rendered HTML response without any sanitization or type enforcement.

An attacker who can convince an authenticated MISP user to navigate to a crafted URL (for example, via a phishing link) can inject arbitrary JavaScript that executes in the victim's browser context. This may allow the attacker to read session tokens, manipulate the page, or perform actions on behalf of the victim.

Preconditions:

  • The victim must be authenticated to MISP and access the analyst data view for an attribute or object.

  • The attacker must supply a malicious seed value in the URL path.

Impact:

  • Execution of arbitrary JavaScript in the victim's browser session.

  • Potential theft of session credentials or sensitive data visible in the page.

  • Manipulation of the analyst data interface.

Affected: MISP versions prior to the fix (commit 58925dbf0, post v2.5.48).

Database specific 
{
    "cna_assigner":  "CIRCL",
    "cwe_ids":  [
        "CWE-79"
    ],
    "osv_generated_from":  "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/103xxx/CVE-2026-103664.json"
}
References

Affected packages

Git / github.com/misp/misp

Affected ranges

Type
GIT
Repo
https://github.com/misp/misp
Events
Introduced
0 Unknown introduced commit / All previous commits are affected
Fixed
58925dbf0
Database specific
Show details 
{
    "extracted_events":  [
        {
            "introduced":  "0"
        },
        {
            "fixed":  "2.5.48"
        }
    ],
    "source":  [
        "AFFECTED_FIELD",
        "REFERENCES"
    ]
}

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-103664.json"