CVE-2012-4271: Multiple cross-site scripting (XSS) vulnerabilities in bad-behavior-wordpress-admin.php in the Bad Behavior pl

Q: How do I fix CVE-2012-4271?

bad behavior: upgrade to newer than 2.0.46; wordpress: mitigate or apply the listed mitigation. Exact commands for each OS are on this page.

Q: Is CVE-2012-4271 being exploited?

CVE-2012-4271 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

Q: What does CVE-2012-4271 affect?

CVE-2012-4271 affects bad behavior, wordpress. Severity is medium (CVSS 4.3). 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)

Q: How urgent is CVE-2012-4271?

Priority 40/100. Public exploit reference

This month

MEDIUM 4.3UPGRADEMITIGATE

CVE-2012-4271 is a medium-severity flaw (CVSS 4.3) affecting bad behavior, wordpress. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

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.

Why this priority

Public exploit reference

A fixed release or distro patch exists.

Risk facts

CVSS score	4.3 (Medium)
EPSS exploit chance	2.0% (top 19%)
CISA exploited list	No
Weakness	CWE-79
Published	2012-08-13
Last modified	2026-06-16

Publisher (CNA): MITRE · Vendor: mark jaquith · wordpress

Last updated 2026-06-16 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2012-08-13 22:55 UTCPublished CVE record published
2026-06-16 23:44 UTCUpdated Record last modified

mark jaquith bad behavior UPGRADE

Affected: <= 2.0.46 · 2.2.0 · 2.2.1 · 2.2.2 · 2.2.3 · 2.2.4

Fixed in: newer than 2.0.46

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy bad-behavior || rpm -q bad-behavior || bad-behavior --version

2. UPGRADE to newer than 2.0.46 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade bad-behavior

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade bad-behavior

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

wordpress wordpress MITIGATE

Affected: all versions

Fixed in: no fixed release known

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy wordpress || rpm -q wordpress || wordpress --version

No fixed or unaffected release known

Apply the vendor mitigation from the advisory, disable the affected feature, or restrict network access.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2012-4271?

bad behavior: upgrade to newer than 2.0.46; wordpress: mitigate or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2012-4271 being exploited?

CVE-2012-4271 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2012-4271 affect?

CVE-2012-4271 affects bad behavior, wordpress. Severity is medium (CVSS 4.3). 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)

How urgent is CVE-2012-4271?

Priority 40/100. Public exploit reference

Software pages

WordPress vulnerabilities · PHP vulnerabilities

Related CVEs

CVE-2014-8735 MEDIUM 4.0 DOWNGRADE The Bad Behavior module 6.x-2.x before 6.x-2.2216 and 7.x-2.x before 7.x-2.2216 for Drupal logs usernames and

References

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