How severe is CVE-2011-3126?

CVE-2011-3126 has a CVSS 2.0 base score of 5.0, rated medium severity.

Is CVE-2011-3126 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (80th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2011-3126?

CVE-2011-3126 primarily affects Wordpress. In total, 4 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2011-3126?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2011-3126 published?

CVE-2011-3126 was published on 2011-08-10 and last updated on 2026-06-16.

CVE-2011-3126

CVE-2011-3126 is a medium-severity vulnerability in Wordpress with a CVSS 2.0 base score of 5.0. 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-200.

Key facts

Severity: Medium (CVSS 2.0 base score 5.0)
EPSS exploit prediction: 2% (80th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-200
Affected product: Wordpress
Published: 2011-08-10
Last modified: 2026-06-16

Description

WordPress 3.1 before 3.1.3 and 3.2 before Beta 2 allows remote attackers to determine usernames of non-authors via canonical redirects.

Frequently asked questions

What is CVE-2011-3126?: WordPress 3.1 before 3.1.3 and 3.2 before Beta 2 allows remote attackers to determine usernames of non-authors via canonical redirects.
How severe is CVE-2011-3126?: CVE-2011-3126 has a CVSS 2.0 base score of 5.0, rated medium severity.
Is CVE-2011-3126 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (80th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2011-3126?: CVE-2011-3126 primarily affects Wordpress. In total, 4 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2011-3126?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2011-3126 published?: CVE-2011-3126 was published on 2011-08-10 and last updated on 2026-06-16.

References

Affected products (4)

cpe:2.3:a:wordpress:wordpress:3.1:*:*:*:*:*:*:*
cpe:2.3:a:wordpress:wordpress:3.1.1:*:*:*:*:*:*:*
cpe:2.3:a:wordpress:wordpress:3.1.2:*:*:*:*:*:*:*
cpe:2.3:a:wordpress:wordpress:3.2:beta1:*:*:*:*:*:*

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