CVE-2012-6112: classes/GoogleSpell.php in the PHP Spellchecker (aka Google Spellchecker) addon before 2.0.6.1 for TinyMCE, as

Routine

MEDIUM 5.0DOWNGRADEDOWNGRADE

CVE-2012-6112 is a medium-severity flaw (CVSS 5.0) affecting spellchecker php, moodle. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

classes/GoogleSpell.php in the PHP Spellchecker (aka Google Spellchecker) addon before 2.0.6.1 for TinyMCE, as used in Moodle 2.1.x before 2.1.10, 2.2.x before 2.2.7, 2.3.x before 2.3.4, and 2.4.x before 2.4.1 and other products, does not properly handle control characters, which allows remote attackers to trigger arbitrary outbound HTTP requests via a crafted string.

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	2.3% (top 17%)
CISA exploited list	No
Weakness	CWE-264
Published	2013-01-27
Last modified	2026-06-16

Publisher (CNA): Red Hat, Inc. · Vendor: moodle · tinymce

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

Am I affected?

Timeline

2013-01-27 22:55 UTCPublished CVE record published
2026-06-16 23:47 UTCUpdated Record last modified

tinymce spellchecker php DOWNGRADE

Affected: 2.0 · 2.0 a1 · 2.0 a2 · 2.0 b1 · 2.0 b2 · 2.0 b3 · 2.0 rc1 · 2.0.1

Fixed in: no fixed release known

Safe to downgrade to: a release before 2.0

1. Check installed version

apt-cache policy spellchecker-php || rpm -q spellchecker-php || spellchecker-php --version

2. No fixed release: DOWNGRADE to a release before 2.0 (Debian / Ubuntu)

apt-cache madison spellchecker-php sudo apt install spellchecker-php=<VERSION_BEFORE_2.0> sudo apt-mark hold spellchecker-php

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

dnf --showduplicates list spellchecker-php sudo dnf downgrade spellchecker-php-<VERSION_BEFORE_2.0> sudo dnf versionlock add spellchecker-php

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.

moodle moodle DOWNGRADE

Affected: 2.1.0 · 2.1.1 · 2.1.2 · 2.1.3 · 2.1.4 · 2.1.5 · 2.1.6 · 2.1.7

Fixed in: no fixed release known

Safe to downgrade to: a release before 2.1.0

1. Check installed version

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

2. No fixed release: DOWNGRADE to a release before 2.1.0 (Debian / Ubuntu)

apt-cache madison moodle sudo apt install moodle=<VERSION_BEFORE_2.1.0> sudo apt-mark hold moodle

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

dnf --showduplicates list moodle sudo dnf downgrade moodle-<VERSION_BEFORE_2.1.0> sudo dnf versionlock add moodle

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-2012-6112?

spellchecker php: downgrade or apply the listed mitigation; moodle: downgrade or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2012-6112 being exploited?

CVE-2012-6112 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-2012-6112 affect?

CVE-2012-6112 affects spellchecker php, moodle. Severity is medium (CVSS 5.0). classes/GoogleSpell.php in the PHP Spellchecker (aka Google Spellchecker) addon before 2.0.6.1 for TinyMCE, as used in Moodle 2.1.x before 2.1.10, 2.2.x before 2.2.7, 2.3.x before 2.3.4, and 2.4.x before 2.4.1 and other products, does not p

How urgent is CVE-2012-6112?

Priority 38/100. No elevated risk signals yet.

Software pages

PHP vulnerabilities · Moodle vulnerabilities

References

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