CVE-2006-2089: Multiple cross-site scripting (XSS) vulnerabilities in misc.php in MySmartBB 1.1.x allow remote attackers to i

Routine

MEDIUM 4.3DOWNGRADE

CVE-2006-2089 is a medium-severity flaw (CVSS 4.3) affecting mysmartbb. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Multiple cross-site scripting (XSS) vulnerabilities in misc.php in MySmartBB 1.1.x allow remote attackers to inject arbitrary web script or HTML via the (1) id and (2) username parameters.

Why this priority

Public exploit reference

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

Risk facts

CVSS score	4.3 (Medium)
EPSS exploit chance	1.7% (top 22%)
CISA exploited list	No
Published	2006-04-29
Last modified	2026-06-16

Publisher (CNA): MITRE · Vendor: mysmartbb

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

Am I affected?

Timeline

2006-04-29 10:02 UTCPublished CVE record published
2026-06-16 22:24 UTCUpdated Record last modified

mysmartbb mysmartbb DOWNGRADE

Affected: 1.1.2 · 1.1.3

Fixed in: no fixed release known

Safe to downgrade to: a release before 1.1.2

1. Check installed version

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

2. No fixed release: DOWNGRADE to a release before 1.1.2 (Debian / Ubuntu)

apt-cache madison mysmartbb sudo apt install mysmartbb=<VERSION_BEFORE_1.1.2> sudo apt-mark hold mysmartbb

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

dnf --showduplicates list mysmartbb sudo dnf downgrade mysmartbb-<VERSION_BEFORE_1.1.2> sudo dnf versionlock add mysmartbb

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: MySmartBB 1.1.2/1.1.3 - Multiple Input Validation Vulnerabilities

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-2006-2089?

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

Is CVE-2006-2089 being exploited?

CVE-2006-2089 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-2006-2089 affect?

CVE-2006-2089 affects mysmartbb. Severity is medium (CVSS 4.3). Multiple cross-site scripting (XSS) vulnerabilities in misc.php in MySmartBB 1.1.x allow remote attackers to inject arbitrary web script or HTML via the (1) id and (2) username parameters.

How urgent is CVE-2006-2089?

Priority 39/100. Public exploit reference

Software pages

PHP vulnerabilities

Related CVEs

CVE-2006-2090 HIGH 7.5 DOWNGRADE Multiple SQL injection vulnerabilities in misc.php in MySmartBB 1.1.x allow remote attackers to execute arbitr

References

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