CVE-2012-0693: submitticket.php in WHMCompleteSolution (WHMCS) 5.03 allows remote attackers to inject arbitrary code into a s

Routine

MEDIUM 5.0DOWNGRADE

CVE-2012-0693 is a medium-severity flaw (CVSS 5.0) affecting whmcompletesolution. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

submitticket.php in WHMCompleteSolution (WHMCS) 5.03 allows remote attackers to inject arbitrary code into a subject field via crafted ticket data, a different vulnerability than CVE-2011-5061. NOTE: the vendor disputes this issue, noting that some of the details overlap CVE-2011-5061, but that it "says it affects V5.0.3, and the submitticket.php file, both of which are wrong.

Why this priority

No elevated risk signals yet

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

Risk facts

CVSS score	5.0 (Medium)
EPSS exploit chance	0.9% (top 39%)
CISA exploited list	No
Weakness	CWE-94
Published	2012-01-14
Last modified	2026-06-16

Publisher (CNA): MITRE · Vendor: whmcs

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

Am I affected?

Timeline

2012-01-14 03:57 UTCPublished CVE record published
2026-06-16 23:38 UTCUpdated Record last modified

whmcs whmcompletesolution DOWNGRADE

Affected: 5.03

Fixed in: no fixed release known

Safe to downgrade to: a release before 5.03

1. Check installed version

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

2. No fixed release: DOWNGRADE to a release before 5.03 (Debian / Ubuntu)

apt-cache madison whmcompletesolution sudo apt install whmcompletesolution=<VERSION_BEFORE_5.03> sudo apt-mark hold whmcompletesolution

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

dnf --showduplicates list whmcompletesolution sudo dnf downgrade whmcompletesolution-<VERSION_BEFORE_5.03> sudo dnf versionlock add whmcompletesolution

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-2012-0693?

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

Is CVE-2012-0693 being exploited?

CVE-2012-0693 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-2012-0693 affect?

CVE-2012-0693 affects whmcompletesolution. Severity is medium (CVSS 5.0). submitticket.php in WHMCompleteSolution (WHMCS) 5.03 allows remote attackers to inject arbitrary code into a subject field via crafted ticket data, a different vulnerability than CVE-2011-5061. NOTE: the vendor disputes this issue, noting t

How urgent is CVE-2012-0693?

Priority 33/100. No elevated risk signals yet.

Software pages

PHP vulnerabilities

Related CVEs

CVE-2011-5061 HIGH 7.5 DOWNGRADE functions.php in WHMCompleteSolution (WHMCS) 4.0.x through 5.0.x allows remote attackers to trigger arbitrary
CVE-2011-4813 MEDIUM 5.0 DOWNGRADE Directory traversal vulnerability in clientarea.php in WHMCompleteSolution (WHMCS) 3.x.x allows remote attacke
CVE-2011-4810 MEDIUM 5.0 DOWNGRADE Multiple directory traversal vulnerabilities in WHMCompleteSolution (WHMCS) 3.x and 4.x allow remote attackers
CVE-2006-0652 MEDIUM 6.5 DOWNGRADE WHMCompleteSolution (WHMCS) before 2.3 assigns incorrect permissions to "resellers", which allows remote authe
CVE-2005-4235 MEDIUM 4.3 UPGRADE Cross-site scripting (XSS) vulnerability in knowledgebase.php in WHMCompleteSolution 2.1 and earlier allows re

References

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