CVE-2026-103662

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Source
https://cve.org/CVERecord?id=CVE-2026-103662
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-103662.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2026-103662
Published
2026-10-01T08:48:38Z
Modified
2026-10-04T02:46:29Z
Severity
  • 5.1 (Medium) CVSS_V4 - CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N CVSS Calculator
Summary
MISP Reflected XSS in Taxonomy Tag Confirmation Forms
Details

MISP contains a reflected cross-site scripting (XSS) vulnerability in the legacy taxonomy tag management confirmation forms (add tag and disable tag).

The affected forms echoed a user-supplied tag name value from the request unescaped into the rendered HTML output. An attacker who can induce a site administrator to visit a crafted URL containing a malicious tag name parameter can execute arbitrary JavaScript in the administrator's browser session.

Preconditions:

  • The target must be running a MISP instance with the legacy taxonomy tag confirmation views enabled.

  • The victim must be an authenticated site administrator.

  • The victim must navigate to the attacker-crafted URL (e.g., via a phishing link).

Security impact:

  • Execution of arbitrary client-side script in the context of the administrator's browser.

  • Potential theft of session tokens, CSRF tokens, or other sensitive data accessible from the page.

  • Potential for performing privileged actions on behalf of the administrator within the MISP interface.

Affected versions: <2.5.48.

Database specific 
{
    "cna_assigner":  "CIRCL",
    "cwe_ids":  [
        "CWE-79"
    ],
    "osv_generated_from":  "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/103xxx/CVE-2026-103662.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
9619083c8
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-2026-103662.json"