CVE-2006-2131: include/class_poll.php in Advanced Poll 2.0.4 uses the HTTP_X_FORWARDED_FOR (X-Forwarded-For HTTP header) to i

Routine

MEDIUM 5.0DOWNGRADE

CVE-2006-2131 is a medium-severity flaw (CVSS 5.0) affecting advanced poll. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

include/class_poll.php in Advanced Poll 2.0.4 uses the HTTP_X_FORWARDED_FOR (X-Forwarded-For HTTP header) to identify the IP address of a client, which makes it easier for remote attackers to spoof the source IP and bypass voting restrictions.

Why this priority

No elevated risk signals yet

No fix is published yet: follow the downgrade or mitigation steps.

Risk facts

CVSS score	5.0 (Medium)
EPSS exploit chance	1.7% (top 23%)
CISA exploited list	No
Published	2006-05-01
Last modified	2026-06-16

Publisher (CNA): MITRE · Vendor: advanced poll

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

Am I affected?

Timeline

2006-05-01 23:02 UTCPublished CVE record published
2026-06-16 22:24 UTCUpdated Record last modified

advanced poll advanced poll DOWNGRADE

Affected: 2.0.4

Fixed in: no fixed release known

Safe to downgrade to: a release before 2.0.4

1. Check installed version

apt-cache policy advanced-poll || rpm -q advanced-poll || advanced-poll --version

2. No fixed release: DOWNGRADE to a release before 2.0.4 (Debian / Ubuntu)

apt-cache madison advanced-poll sudo apt install advanced-poll=<VERSION_BEFORE_2.0.4> sudo apt-mark hold advanced-poll

2. No fixed release: DOWNGRADE (RHEL / Amazon Linux / Fedora)

dnf --showduplicates list advanced-poll sudo dnf downgrade advanced-poll-<VERSION_BEFORE_2.0.4> sudo dnf versionlock add advanced-poll

Downgrade risk

Downgrading can break dependent software and may reopen older bugs. Read the distro advisory first and test on a non-production host.

After downgrade

Restart the service, and keep the package held until a fixed release ships.

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-2006-2131?

advanced poll: downgrade or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2006-2131 being exploited?

CVE-2006-2131 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-2006-2131 affect?

CVE-2006-2131 affects advanced poll. Severity is medium (CVSS 5.0). include/class_poll.php in Advanced Poll 2.0.4 uses the HTTP_X_FORWARDED_FOR (X-Forwarded-For HTTP header) to identify the IP address of a client, which makes it easier for remote attackers to spoof the source IP and bypass voting restrictio

How urgent is CVE-2006-2131?

Priority 37/100. No elevated risk signals yet.

Software pages

PHP vulnerabilities

Related CVEs

CVE-2010-2003 MEDIUM 4.3 DOWNGRADE Cross-site scripting (XSS) vulnerability in misc/get_admin.php in Advanced Poll 2.08 allows remote attackers t
CVE-2007-0845 HIGH 7.5 DOWNGRADE admin/index.php in Advanced Poll 2.0.0 through 2.0.5-dev allows remote attackers to bypass authentication and
CVE-2006-2130 MEDIUM 5.1 DOWNGRADE SQL injection vulnerability in include/class_poll.php in Advanced Poll 2.0.4 allows remote attackers to execut
CVE-2006-1617 MEDIUM 4.3 DOWNGRADE Multiple cross-site scripting (XSS) vulnerabilities in Advanced Poll 2.02 allow remote attackers to inject arb
CVE-2006-1616 HIGH 7.5 DOWNGRADE Multiple SQL injection vulnerabilities in Advanced Poll 2.02 allow remote attackers to execute arbitrary SQL c

References

← Back to latest CVEs