CVE-2026-103389

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Source

https://cve.org/CVERecord?id=CVE-2026-103389

Import Source

https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-103389.json

JSON Data

https://api.osv.dev/v1/vulns/CVE-2026-103389

Published

2026-09-30T14:25:59Z

Modified

2026-10-04T02:46:16Z

Severity

6.2 (Medium) CVSS_V4 - CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:A/VC:N/VI:N/VA:N/SC:H/SI:H/SA:N CVSS Calculator

Summary

MISP Stored Cross-Site Scripting via Unvalidated Galaxy Icon Field in Correlation Graph

Details

MISP contains a stored cross-site scripting (XSS) vulnerability in the galaxy icon handling path. The icon field of a galaxy object was persisted without any server-side validation through the galaxy add, edit, and sync/import capture endpoints. The stored value was subsequently concatenated directly into HTML markup by the D3-based correlation graph rendering scripts (both the default and Overmind themes) using the .html() method.

A user holding the perm_galaxy_editor permission, which is granted to the stock User role, could store arbitrary HTML or JavaScript in the icon field. Any other user who opened the correlation graph of an event containing a cluster belonging to that galaxy would have the injected script executed in their browser session.

Impact:

Arbitrary script execution in the context of the victim's MISP session
Potential theft of session credentials, manipulation of displayed data, or initiation of actions on behalf of the victim
Affects both the default and Overmind UI themes

Affected versions: <2.5.48

Database specific

{
    "cna_assigner":  "CIRCL",
    "cwe_ids":  [
        "CWE-20",
        "CWE-79"
    ],
    "osv_generated_from":  "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/103xxx/CVE-2026-103389.json"
}

References

Affected packages

Git / github.com/misp/misp

Affected ranges

Type

GIT

Repo

https://github.com/misp/misp

Events

Introduced

Fixed

8ea5783dd

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-2026-103389.json"