Cross-site request forgery (CSRF) vulnerability in the Shibboleth Authentication module before 6.x-4.1 and 7.x-4.x before 7.x-4.1 for Drupal allows remote attackers to hijack the authentication of administrators for requests that delete user role matching rules via unspecified vectors.
Conclusion & alert: CVE-2015-3375 is rated Low Risk (35.2/100): CVSS Medium severity, with low exploitation likelihood (EPSS 0.16%). Mandatory action: Monitor for updates and reassess as exploit intelligence or EPSS changes.
Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.
EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).
| # | Date | Old EPSS score | New EPSS score | Delta (New - Old) |
|---|---|---|---|---|
| 1 | 2025-03-30 | 0.13% | 0.16% | +0.03% |
| 2 | 2025-03-29 | 0.22% | 0.13% | -0.09% |
| 3 | 2023-03-07 | — | 0.22% | — |
Full EPSS history (4 records total)
CVSS metrics for this CVE.
| Base score | Version | Severity | Vector | Exploitability | Impact | Score source |
|---|---|---|---|---|---|---|
| 5.8 | 2.0 | MEDIUM |
|
8.6 | 4.9 | [email protected] |
: Per the <a href="https://www.drupal.org/node/2411737">advisory</a>: "A malicious attacker can delete matching rules from the list by getting the administrator's browser to make a request to a specially-crafted URL while the administrator is logged in." Only integrity and availability are affected
| Vendor | Product | Version | Raw CPE |
|---|---|---|---|
| niif | shibboleth_authentication | <= 6.x-4.0 | cpe:2.3:a:niif:shibboleth_authentication:*:*:*:*:*:drupal:*:* |
| niif | shibboleth_authentication | 7.x-4.0 | cpe:2.3:a:niif:shibboleth_authentication:7.x-4.0:*:*:*:*:drupal:*:* |