CVE-2009-4527

CVE-2009-4527 is a medium-severity vulnerability in Niif Shib Auth with a CVSS 2.0 base score of 4.6. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-264.

Key facts

Description

The Shibboleth authentication module 5.x before 5.x-3.4 and 6.x before 6.x-3.2, a module for Drupal, does not properly remove statically granted privileges after a logout or other session change, which allows physically proximate attackers to gain privileges by using an unattended web browser.

Frequently asked questions

What is CVE-2009-4527?
The Shibboleth authentication module 5.x before 5.x-3.4 and 6.x before 6.x-3.2, a module for Drupal, does not properly remove statically granted privileges after a logout or other session change, which allows physically proximate attackers to gain privileges by using an unattended web browser.
How severe is CVE-2009-4527?
CVE-2009-4527 has a CVSS 2.0 base score of 4.6, rated medium severity.
Is CVE-2009-4527 being actively exploited?
It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (25th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2009-4527?
CVE-2009-4527 primarily affects Niif Shib Auth. In total, 17 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2009-4527?
Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2009-4527 published?
CVE-2009-4527 was published on 2009-12-31 and last updated on 2026-06-16.

References

Affected products (17)

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