CVE-2012-3872: Multiple cross-site scripting (XSS) vulnerabilities in Open Constructor 3.12.0 allow remote attackers to injec

Routine

MEDIUM 4.3DOWNGRADE

CVE-2012-3872 is a medium-severity flaw (CVSS 4.3) affecting openconstructor. 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 Open Constructor 3.12.0 allow remote attackers to inject arbitrary web script or HTML via (1) the result parameter to data/file/edit.php, (2) the q parameter to confirm.php, or (3) the keyword parameter to users/users.php.

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	1.4% (top 28%)
CISA exploited list	No
Weakness	CWE-79
Published	2012-12-28
Last modified	2026-06-16

Publisher (CNA): MITRE · Vendor: openconstructor project

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

Am I affected?

Timeline

2012-12-28 11:48 UTCPublished CVE record published
2026-06-16 23:44 UTCUpdated Record last modified

openconstructor project openconstructor DOWNGRADE

Affected: 3.12.0

Fixed in: no fixed release known

Safe to downgrade to: a release before 3.12.0

1. Check installed version

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

2. No fixed release: DOWNGRADE to a release before 3.12.0 (Debian / Ubuntu)

apt-cache madison openconstructor sudo apt install openconstructor=<VERSION_BEFORE_3.12.0> sudo apt-mark hold openconstructor

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

dnf --showduplicates list openconstructor sudo dnf downgrade openconstructor-<VERSION_BEFORE_3.12.0> sudo dnf versionlock add openconstructor

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: Open Constructor - '/data/file/edit.php?result' Cross-Site Scripting
Exploit-DB: Open Constructor - '/users/users.php?keyword' Cross-Site Scripting
Exploit-DB: Open Constructor - 'confirm.php?q' Cross-Site Scripting

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-2012-3872?

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

Is CVE-2012-3872 being exploited?

CVE-2012-3872 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-2012-3872 affect?

CVE-2012-3872 affects openconstructor. Severity is medium (CVSS 4.3). Multiple cross-site scripting (XSS) vulnerabilities in Open Constructor 3.12.0 allow remote attackers to inject arbitrary web script or HTML via (1) the result parameter to data/file/edit.php, (2) the q parameter to confirm.php, or (3) the

How urgent is CVE-2012-3872?

Priority 38/100. Public exploit reference

Software pages

PHP vulnerabilities

Related CVEs

CVE-2012-3873 MEDIUM 6.5 DOWNGRADE Multiple SQL injection vulnerabilities in Open Constructor 3.12.0 allow remote authenticated users to execute
CVE-2012-3871 LOW 3.5 DOWNGRADE Cross-site scripting (XSS) vulnerability in data/hybrid/i_hybrid.php in Open Constructor 3.12.0 allows remote
CVE-2012-3870 LOW 3.5 DOWNGRADE Multiple cross-site scripting (XSS) vulnerabilities in objects/createobject.php in Open Constructor 3.12.0 all

References

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