CVE-2006-1978: SQL injection vulnerability in inc/start.php in FlexBB 0.5.5 and earlier allows remote attackers to execute ar

Q: How do I fix CVE-2006-1978?

flexbb: upgrade to newer than 0.5.5. Exact commands for each OS are on this page.

Q: Is CVE-2006-1978 being exploited?

CVE-2006-1978 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

Q: What does CVE-2006-1978 affect?

CVE-2006-1978 affects flexbb. Severity is high (CVSS 7.5). SQL injection vulnerability in inc/start.php in FlexBB 0.5.5 and earlier allows remote attackers to execute arbitrary SQL commands via the flexbb_username COOKIE parameter.

Q: How urgent is CVE-2006-1978?

Priority 49/100. High severity; Public exploit reference

This month

HIGH 7.5UPGRADE

CVE-2006-1978 is a high-severity flaw (CVSS 7.5) affecting flexbb. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

SQL injection vulnerability in inc/start.php in FlexBB 0.5.5 and earlier allows remote attackers to execute arbitrary SQL commands via the flexbb_username COOKIE parameter.

Why this priority

High severity
Public exploit reference

A fixed release or distro patch exists.

Risk facts

CVSS score	7.5 (High)
EPSS exploit chance	1.3% (top 30%)
CISA exploited list	No
Weakness	CWE-89
Published	2006-04-21
Last modified	2026-06-16

Publisher (CNA): MITRE · Vendor: flexbb

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

Am I affected?

Timeline

2006-04-21 22:02 UTCPublished CVE record published
2026-06-16 22:24 UTCUpdated Record last modified

flexbb flexbb UPGRADE

Affected: <= 0.5.5

Fixed in: newer than 0.5.5

Safe to downgrade to: no unaffected older release

1. Check installed version

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

2. UPGRADE to newer than 0.5.5 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade flexbb

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade flexbb

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

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: FlexBB 0.5.5 - '/inc/start.php?_COOKIE' SQL 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-2006-1978?

flexbb: upgrade to newer than 0.5.5. Exact commands for each OS are on this page.

Is CVE-2006-1978 being exploited?

CVE-2006-1978 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-2006-1978 affect?

CVE-2006-1978 affects flexbb. Severity is high (CVSS 7.5). SQL injection vulnerability in inc/start.php in FlexBB 0.5.5 and earlier allows remote attackers to execute arbitrary SQL commands via the flexbb_username COOKIE parameter.

How urgent is CVE-2006-1978?

Priority 49/100. High severity; Public exploit reference

Software pages

PHP vulnerabilities

Related CVEs

CVE-2008-0157 HIGH 7.5 UPGRADE SQL injection vulnerability in FlexBB 0.6.3 and earlier allows remote attackers to execute arbitrary SQL comma
CVE-2007-1729 HIGH 7.5 DOWNGRADE SQL injection vulnerability in includes/start.php in Flexbb 1.0.0 10005 Beta Release 1 allows remote attackers
CVE-2006-2034 HIGH 7.5 DOWNGRADE SQL injection vulnerability in function/showprofile.php in FlexBB 0.5.5 allows remote attackers to execute arb
CVE-2006-1977 MEDIUM 5.8 UPGRADE Cross-site scripting (XSS) vulnerability in FlexBB 0.5.7 BETA and earlier allows remote attackers to inject ar
CVE-2006-1811 MEDIUM 6.4 DOWNGRADE Multiple SQL injection vulnerabilities in FlexBB 0.5.5 BETA allow remote attackers to execute arbitrary SQL co

References

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