CVE-2008-6718: U&M Software JustBookIt 1.0 does not require administrative authentication for all scripts in the admin/ direc

This month

HIGH 7.5DOWNGRADE

CVE-2008-6718 is a high-severity flaw (CVSS 7.5) affecting justbookit. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

U&M Software JustBookIt 1.0 does not require administrative authentication for all scripts in the admin/ directory, which allows remote attackers to have an unspecified impact via a direct request to (1) user_manual.php, (2) user_config.php, (3) user_kundnamn.php, (4) user_kundlista.php, (5) user_aktiva_kunder.php, (6) database.php, and possibly (7) index.php.

Why this priority

High severity
Public exploit reference

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

Risk facts

CVSS score	7.5 (High)
EPSS exploit chance	2.2% (top 17%)
CISA exploited list	No
Weakness	CWE-287
Published	2009-04-13
Last modified	2026-06-16

Publisher (CNA): MITRE · Vendor: uochm

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

Am I affected?

Timeline

2009-04-13 15:30 UTCPublished CVE record published
2026-06-16 23:02 UTCUpdated Record last modified

uochm justbookit DOWNGRADE

Affected: 1.0

Fixed in: no fixed release known

Safe to downgrade to: a release before 1.0

1. Check installed version

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

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

apt-cache madison justbookit sudo apt install justbookit=<VERSION_BEFORE_1.0> sudo apt-mark hold justbookit

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

dnf --showduplicates list justbookit sudo dnf downgrade justbookit-<VERSION_BEFORE_1.0> sudo dnf versionlock add justbookit

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.

Public exploits and detection

Public code exists for this CVE. Treat unpatched systems as at risk, and only run PoCs in a lab.

Exploit-DB: U&M Software JustBookIt 1.0 - Authentication Bypass

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-2008-6718?

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

Is CVE-2008-6718 being exploited?

CVE-2008-6718 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-2008-6718 affect?

CVE-2008-6718 affects justbookit. Severity is high (CVSS 7.5). U&M Software JustBookIt 1.0 does not require administrative authentication for all scripts in the admin/ directory, which allows remote attackers to have an unspecified impact via a direct request to (1) user_manual.php, (2) user_config.php

How urgent is CVE-2008-6718?

Priority 52/100. High severity; Public exploit reference

Software pages

PHP vulnerabilities

References

← Back to latest CVEs