Known vulnerabilities in Shibboleth

Allows WordPress to externalize user authentication and account creation to a Shibboleth Service Provider.

2Reported vulnerabilities

9.8Highest CVSS score

2.5.4Latest version

3,000+Active installs

What to do now

Update Shibboleth to 2.5.4 or later. 2 of these have a fixed version available. Updating resolves them.

Plugin last updated: June 22, 2026 / Tested up to WordPress: 7.0.4 / View on wordpress.org

Reported vulnerabilities

Ordered by how urgently they need attention — whether a vulnerability is actually being exploited, and how likely exploitation is, rather than CVSS severity alone.

CVE	Severity	Exploit probability next 30 days	Affected versions	Fixed in	Published
CVE-2026-12281	Critical 9.8	0.4%	2.5.3 and earlier	`2.5.4`	June 24, 2026
CVE-2017-14313	Medium 6.1	1.5%	1.7 and earlier	`1.7`	September 12, 2017

Sources: vulnerability records from NVD, exploitation from CISA KEV, exploit probability from EPSS. Affected versions come from CPE ranges or from the reporting CNA.