Threat intelligence

Shibboleth <= 2.5.3 - Unauthenticated Administrator Account Creation

CVE-2026-12281 · shibboleth

Important: Seeing this vulnerability listed does not mean your website is affected. Exposure depends on whether you run Shibboleth at a vulnerable version. How SiteRespond intelligence works

Vulnerability: Shibboleth <= 2.5.3 - Unauthenticated Administrator Account Creation
Affected software: shibboleth(Plugin)
Affected versions: ≤ 2.5.3
Authentication: Unauthenticated
Vulnerability type: Other
CVE: CVE-2026-12281
Published: 24 June 2026
CISA KEV: Not listed in CISA KEV at last catalog refresh
Impact: This advisory describes a other issue in the affected software. Review the source advisory and your installed version to assess exposure.
Source: Data imported from Wordfence Intelligence (advisory cb55be41-c3aa-4f1e-9330-a31181a3a264). Methodology and redistribution notes

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