What is CVE-2011-3126?

CVE-2011-3126 is a vulnerability in WordPress, classified under Information Disclosure. Published 2011-08-10.

Is CVE-2011-3126 known to be exploited?

1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.

Information disclosure in WordPress

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.

Vulnerability class: Information Disclosure

Published 2011-08-10 · last modified 2026-06-16.

CVSS v2 metric

CVSS v2 base score 5.0 (Medium). Vector: AV:N/AC:L/Au:N/C:P/I:N/A:N. This CVE predates CVSS v3 and has no v3 score from NVD.

EPSS exploit prediction

EPSS: 0.022 (81.9th percentile), scored 2026-09-29.

Low probability of exploitation in the next 30 days, but still tracked. 82nd percentile — 81.9% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.022 · newest: 0.022 · change: 0.000

Affected products

WordPress — versions 3.1, 3.1.1, 3.1.2

Weakness classification (CWE)

CWE-200 — Information Disclosure

Public proof-of-concept exploits

20142995/nuclei-templates

References

www.securityfocus.com/bid/47995 (vdb-entry)
secunia.com/advisories/49138 (third-party-advisory)
wordpress.org/news/2011/05/wordpress-3-1-3/ (Patch)
www.debian.org/security/2012/dsa-2470 (vendor-advisory)
exchange.xforce.ibmcloud.com/vulnerabilities/69173 (vdb-entry)

Frequently asked questions

What is CVE-2011-3126?: CVE-2011-3126 is a vulnerability in WordPress, classified under Information Disclosure. Published 2011-08-10.
Is CVE-2011-3126 known to be exploited?: 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.