CVE-2002-2163: KvPoll 1.1 allows remote authenticated users to vote more than once by setting the "already_voted" cookie by v

Routine

MEDIUM 4.0DOWNGRADE

CVE-2002-2163 is a medium-severity flaw (CVSS 4.0) affecting kvpoll. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

KvPoll 1.1 allows remote authenticated users to vote more than once by setting the "already_voted" cookie by various methods, including a direct call to clear_cookies.php.

Why this priority

No elevated risk signals yet

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

Risk facts

CVSS score	4.0 (Medium)
EPSS exploit chance	1.2% (top 32%)
CISA exploited list	No
Published	2002-12-31
Last modified	2026-06-16

Publisher (CNA): MITRE · Vendor: killervault

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

Am I affected?

Timeline

2002-12-31 05:00 UTCPublished CVE record published
2026-06-16 22:00 UTCUpdated Record last modified

killervault kvpoll DOWNGRADE

Affected: 1.1

Fixed in: no fixed release known

Safe to downgrade to: a release before 1.1

1. Check installed version

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

2. No fixed release: DOWNGRADE to a release before 1.1 (Debian / Ubuntu)

apt-cache madison kvpoll sudo apt install kvpoll=<VERSION_BEFORE_1.1> sudo apt-mark hold kvpoll

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

dnf --showduplicates list kvpoll sudo dnf downgrade kvpoll-<VERSION_BEFORE_1.1> sudo dnf versionlock add kvpoll

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-2002-2163?

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

Is CVE-2002-2163 being exploited?

CVE-2002-2163 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-2002-2163 affect?

CVE-2002-2163 affects kvpoll. Severity is medium (CVSS 4.0). KvPoll 1.1 allows remote authenticated users to vote more than once by setting the "already_voted" cookie by various methods, including a direct call to clear_cookies.php.

How urgent is CVE-2002-2163?

Priority 31/100. No elevated risk signals yet.

Software pages

PHP vulnerabilities

References

← Back to latest CVEs