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Fencer Intel
medium 4.3

CVE-2012-4271 json

Multiple cross-site scripting (XSS) vulnerabilities in bad-behavior-wordpress-admin.php in the Bad Behavior plugin before 2.0.47 and 2.2.x…

published 2012-08-13 14 y ago modified 2026-06-16 4 mo ago also EUVD-2012-4215

cvss
4.3
version 2.0, NVD
cisa kev
Not listed
not in CISA's catalog
epss
2.0%
EPSS 2.0% chance of exploitation in 30 days, percentile 81%
public exploits
0
none known

Summary

Multiple cross-site scripting (XSS) vulnerabilities in bad-behavior-wordpress-admin.php in the Bad Behavior plugin before 2.0.47 and 2.2.x before 2.2.5 for WordPress allow remote attackers to inject arbitrary web script or HTML via the (1) PATH_INFO, (2) httpbl_key, (3) httpbl_maxage, (4) httpbl_threat, (5) reverse_proxy_addresses, or (6) reverse_proxy_header parameter.

Patch / fix

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2012-4271 updated cvss 4.3

wordpress-plugin-bad-behavior: multiple XSS flaws

  • Red Hat All currently supported Red Hat products
    not affected: vulnerable code not present

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

Exploit prediction

2.05% chance of exploitation in the next 30 days, higher than 81% of all scored CVEs (FIRST EPSS, 2026-11-09).

Exploits and checks

  • plugins.trac.wordpress.org http://plugins.trac.wordpress.org/changeset?old_path=%2Fbad-behavior&old=543807&new_path=%2Fbad-behavior&new=543807 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.