CVE-2003-1255: add_bookmark.php in Active PHP Bookmarks (APB) 1.1.01 allows remote attackers to add arbitrary bookmarks as ot

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MEDIUM 6.4DOWNGRADE

CVE-2003-1255 is a medium-severity flaw (CVSS 6.4) affecting active php bookmarks. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

add_bookmark.php in Active PHP Bookmarks (APB) 1.1.01 allows remote attackers to add arbitrary bookmarks as other users using a modified auth_user_id parameter.

Why this priority

Public exploit reference

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

Risk facts

CVSS score	6.4 (Medium)
EPSS exploit chance	1.5% (top 26%)
CISA exploited list	No
Published	2003-12-31
Last modified	2026-06-16

Publisher (CNA): MITRE · Vendor: active php bookmarks

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

Am I affected?

Timeline

2003-12-31 05:00 UTCPublished CVE record published
2026-06-16 22:03 UTCUpdated Record last modified

active php bookmarks active php bookmarks DOWNGRADE

Affected: 1.1.01

Fixed in: no fixed release known

Safe to downgrade to: a release before 1.1.01

1. Check installed version

apt-cache policy active-php-bookmarks || rpm -q active-php-bookmarks || active-php-bookmarks --version

2. No fixed release: DOWNGRADE to a release before 1.1.01 (Debian / Ubuntu)

apt-cache madison active-php-bookmarks sudo apt install active-php-bookmarks=<VERSION_BEFORE_1.1.01> sudo apt-mark hold active-php-bookmarks

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

dnf --showduplicates list active-php-bookmarks sudo dnf downgrade active-php-bookmarks-<VERSION_BEFORE_1.1.01> sudo dnf versionlock add active-php-bookmarks

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-2003-1255?

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

Is CVE-2003-1255 being exploited?

CVE-2003-1255 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-2003-1255 affect?

CVE-2003-1255 affects active php bookmarks. Severity is medium (CVSS 6.4). add_bookmark.php in Active PHP Bookmarks (APB) 1.1.01 allows remote attackers to add arbitrary bookmarks as other users using a modified auth_user_id parameter.

How urgent is CVE-2003-1255?

Priority 46/100. Public exploit reference

Software pages

PHP vulnerabilities

Related CVEs

CVE-2008-3748 HIGH 7.5 DOWNGRADE DOWNGRADE SQL injection vulnerability in view_group.php in Active PHP Bookmarks (APB) 1.1.02 and 1.2.06 allows remote at
CVE-2006-6167 HIGH 7.5 DOWNGRADE Multiple PHP remote file inclusion vulnerabilities in L

References

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