CVE-2002-1821: Ultimate PHP Board (UPB) 1.0 and 1.0b allows remote authenticated users to gain privileges and perform unautho

Routine

MEDIUM 4.6DOWNGRADE

CVE-2002-1821 is a medium-severity flaw (CVSS 4.6) affecting ultimate php board. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Ultimate PHP Board (UPB) 1.0 and 1.0b allows remote authenticated users to gain privileges and perform unauthorized actions via direct requests to (1) admin_members.php, (2) admin_config.php, (3) admin_cat.php, or (4) admin_forum.php.

Why this priority

No elevated risk signals yet

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

Risk facts

CVSS score	4.6 (Medium)
EPSS exploit chance	0.7% (top 48%)
CISA exploited list	No
Published	2002-12-31
Last modified	2026-06-16

Publisher (CNA): MITRE · Vendor: ultimate php board

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

ultimate php board ultimate php board DOWNGRADE

Affected: 1.0 · 1.0_beta

Fixed in: no fixed release known

Safe to downgrade to: a release before 1.0

1. Check installed version

apt-cache policy ultimate-php-board || rpm -q ultimate-php-board || ultimate-php-board --version

2. No fixed release: DOWNGRADE to a release before 1.0 (Debian / Ubuntu)

apt-cache madison ultimate-php-board sudo apt install ultimate-php-board=<VERSION_BEFORE_1.0> sudo apt-mark hold ultimate-php-board

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

dnf --showduplicates list ultimate-php-board sudo dnf downgrade ultimate-php-board-<VERSION_BEFORE_1.0> sudo dnf versionlock add ultimate-php-board

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-2002-1821?

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

Is CVE-2002-1821 being exploited?

CVE-2002-1821 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-2002-1821 affect?

CVE-2002-1821 affects ultimate php board. Severity is medium (CVSS 4.6). Ultimate PHP Board (UPB) 1.0 and 1.0b allows remote authenticated users to gain privileges and perform unauthorized actions via direct requests to (1) admin_members.php, (2) admin_config.php, (3) admin_cat.php, or (4) admin_forum.php.

How urgent is CVE-2002-1821?

Priority 29/100. No elevated risk signals yet.

Software pages

PHP vulnerabilities

Related CVEs

CVE-2025-61540 MEDIUM 6.5 DOWNGRADE SQL injection vulnerability in Ultimate PHP Board 2.2.7 via the username field in lostpassword.php.
CVE-2025-61539 MEDIUM 6.1 DOWNGRADE Cross site scripting (XSS) vulnerability in Ultimate PHP Board 2.2.7 via the u_name parameter in lostpassword.
CVE-2015-2217 MEDIUM 4.3 DOWNGRADE Multiple cross-site scripting (XSS) vulnerabilities in Ultimate PHP Board (aka myUPB) before 2.2.8 allow remot
CVE-2006-7169 MEDIUM 6.8 UPGRADE PHP remote file inclusion vulnerability in includes/header_simple.php in Ultimate PHP Board (UPB) 2.0 and earl
CVE-2006-6790 HIGH 7.5 UPGRADE Direct static code injection vulnerability in chat/login.php in Ultimate PHP Board (UPB) 2.0b1 and earlier all

References

← Back to latest CVEs