How severe is CVE-2014-7846?

No CVSS score has been assigned to CVE-2014-7846 yet. Review the advisory details and affected package list to assess your exposure.

Which packages are affected by CVE-2014-7846?

CVE-2014-7846 affects the following packages: moodle/moodle (Packagist), moodle/moodle (Packagist), moodle/moodle (Packagist). Ecosystems affected: Packagist.

How do I fix CVE-2014-7846?

Update moodle/moodle to 2.5.9 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms CVE-2014-7846 is resolved across your whole dependency graph.

How do I detect CVE-2014-7846 in my Packagist dependencies?

Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for moodle/moodle, including transitive dependencies — a direct dependency you never call can still pull in a vulnerable version.

How do I mitigate CVE-2014-7846 if there is no patch (or I can't update yet)?

If you can't upgrade right away: gate or disable the affected feature, validate untrusted input at the boundary, and avoid passing attacker-controlled data into the vulnerable path. O3's runtime protection blocks exploitation in production as an interim safeguard until the upgrade lands.

Is CVE-2014-7846 actively exploited in the wild?

No public exploit code has been indexed for CVE-2014-7846 yet. This does not mean the vulnerability cannot be exploited — absence of public exploits does not imply safety. Apply the recommended fix and use O3 Security to monitor your exposure.

What is the EPSS score for CVE-2014-7846?

CVE-2014-7846 has an EPSS (Exploit Prediction Scoring System) score of 1.7%, placing it in the 77th percentile of all CVEs. EPSS is maintained by FIRST.org and estimates the probability that a vulnerability will be exploited in the wild within the next 30 days. This score indicates relatively lower exploitation probability, though the CVSS severity should still guide your patching priority.

What type of vulnerability is CVE-2014-7846?

CVE-2014-7846 is classified as CWE-264 (CWE-264). This weakness type describe the underlying flaw category, which helps determine the potential impact and the right class of mitigation.

When was CVE-2014-7846 published, and has it been updated?

CVE-2014-7846 was published on May 13, 2022 and was last updated on December 7, 2024. Advisory data evolves as severity scores, affected ranges, and exploit intelligence are revised — always check the latest version of the advisory before acting.

CVE-2014-7846: moodle — Fixed in 2.5.9

EPSS Exploitation Probability

via FIRST.org ↗

1.7%probability of exploitation in next 30 days

Lower Risk0.00%

Lower risk than most CVEs77th percentile — riskier than 77% of all scored CVEsHighest risk

Probability of exploitation in the next 30 days, from FIRST.org EPSS.

Real-World Exposure

3 pkgs affected

🐘moodle/moodle🐘moodle/moodle🐘moodle/moodle

Real-time download stats are indexed for npm and PyPI packages. This vulnerability affects Packagist packages — download data is not available via public APIs for these ecosystems.

Description

tag/tag_autocomplete.php in Moodle through 2.4.11, 2.5.x before 2.5.9, 2.6.x before 2.6.6, and 2.7.x before 2.7.3 does not consider the moodle/tag:edit capability before adding a tag, which allows remote authenticated users to bypass intended access restrictions via an AJAX request.

Affected Packages

3 total 3 fixed

Ecosystem	Package	Vulnerable range	Fix
🐘Packagist	`moodle/moodle`	all versions	2.5.9`composer require moodle/moodle:^2.5.9`
🐘Packagist	`moodle/moodle`	≥ 2.6.0&&< 2.6.6	2.6.6`composer require moodle/moodle:^2.6.6`
🐘Packagist	`moodle/moodle`	≥ 2.7.0&&< 2.7.3	2.7.3`composer require moodle/moodle:^2.7.3`

Affected Products

1 product · 19 configurations

Application

moodlemoodle

≤ 2.4.11

18 versions

2.5.02.5.12.5.22.5.32.5.42.5.52.5.62.5.72.5.82.6.02.6.12.6.2

Detection & mitigation playbook

Open-source dependency

Detect
Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for moodle/moodle, including transitive dependencies — a direct dependency you never call can still pull in a vulnerable version.
Fix
Update moodle/moodle to 2.5.9 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms CVE-2014-7846 is resolved across your whole dependency graph.
Workarounds
If you can't upgrade right away: gate or disable the affected feature, validate untrusted input at the boundary, and avoid passing attacker-controlled data into the vulnerable path. O3's runtime protection blocks exploitation in production as an interim safeguard until the upgrade lands.

Frequently Asked Questions

tag/tag_autocomplete.php in Moodle through 2.4.11, 2.5.x before 2.5.9, 2.6.x before 2.6.6, and 2.7.x before 2.7.3 does not consider the moodle/tag:edit capability before adding a tag, which allows remote authenticated users to bypass intended access restrictions via an AJAX request.

O3 Security · Impact-Aware SCA

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CVE-2014-7846 — moodle