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Fencer Intel
medium 4.3

CVE-2011-5106 json

Cross-site scripting (XSS) vulnerability in edit-post.php in the Flexible Custom Post Type plugin before 0.1.7 for WordPress allows remote…

published 2012-08-23 14 y ago modified 2026-06-16 4 mo ago also EUVD-2011-5006

cvss
4.3
version 2.0, NVD
cisa kev
Not listed
not in CISA's catalog
epss
10.9%
EPSS 10.9% chance of exploitation in 30 days, percentile 95%
public exploits
1
Exploit-DB, plus a Nuclei check

Summary

Cross-site scripting (XSS) vulnerability in edit-post.php in the Flexible Custom Post Type plugin before 0.1.7 for WordPress allows remote attackers to inject arbitrary web script or HTML via the id parameter.

Patch / fix

Timeline

  1. First public exploit (EDB-36317)
  2. Published

Exploit prediction

10.90% chance of exploitation in the next 30 days, higher than 95% of all scored CVEs (FIRST EPSS, 2026-11-09).

Exploits and checks

  • EDB-36317 WordPress Plugin Flexible Custom Post Type - 'id' Cross-Site Scripting webapps, 2011-11-17
  • Nuclei template WordPress Plugin Flexible Custom Post Type < 0.1.7 - Cross-Site Scripting nuclei detection template
  • plugins.trac.wordpress.org http://plugins.trac.wordpress.org/changeset?reponame=&new=466252%40flexible-custom-post-type&old=465583%40flexible-custom-post-type referenced PoC, tagged "exploit" by a source, unverified
  • securityfocus.com http://www.securityfocus.com/bid/50719 referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by version score vector
NVD 2.0 4.3 AV:N/AC:M/Au:N/C:N/I:P/A:N

Classification

Weakness
  • CWE-79 Improper Neutralization of Input During Web Page Generation
Technology feeds

References

Sources

Fencer Intel keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.