CVE-2016-9188

MEDIUMNVD 6.16.1—

6.1

Cross-site scripting (XSS) vulnerabilities in Moodle CMS on or before 3.1.2 allow remote attackers to inject arbitrary web script or HTML via the s_additionalhtmlhead, s_additionalhtmltopofbody, and s_additionalhtmlfooter parameters.

CVSS v3: 6.1
EG Score: 6.1(medium)
EPSS: 47.2%
KEV: Not listed

Published

November 4, 2016

Last Modified

May 6, 2026

References (4)

cve@mitrehttp://www.securityfocus.com/bid/94189
cve@mitrehttps://packetstormsecurity.com/files/139466/Moodle-CMS-3.1.2-Cross-Site-Scripting-File-Upload.html
af854a3a-2127-422b-91ae-364da2661108http://www.securityfocus.com/bid/94189
af854a3a-2127-422b-91ae-364da2661108https://packetstormsecurity.com/files/139466/Moodle-CMS-3.1.2-Cross-Site-Scripting-File-Upload.html

Patch Availability(1)

Vendor / Ecosystem	Fixed in / Patch	Released	Source
composer	moodle/moodle	—	ghsa

Patches are aggregated from vendor advisories (Red Hat, Microsoft, Cisco, GitHub) and package ecosystems (OSV, GHSA). Multiple rows for the same upstream release have been deduplicated.

Affected Packages

(1 across 1 ecosystem)

Packagist(1)

Package	Vulnerable range	Fixed in	Dependents
moodle/moodle	v2.3.10 ... v3.2.1 (146 versions)	—	—

Data Freshness Timeline

(refreshed 9× in last 7d / 20× in last 30d)

Every time one of our enrichment pipelines (NVD, MITRE cvelistV5, EPSS, CISA KEV, GHSA, OSV, vendor advisories) ran against this CVE. Most recent first.

2026-06-04 13:10 UTCepss_batch
2026-06-04 13:10 UTCepss_batch
2026-06-02 20:10 UTCepss_batch
2026-06-01 13:49 UTCepss_batch
2026-06-01 13:49 UTCepss_batch
2026-05-31 22:28 UTCepss_batch
2026-05-31 22:28 UTCepss_batch
2026-05-31 00:14 UTCepss_batch
2026-05-29 13:41 UTCepss_batch
2026-05-28 13:42 UTCepss_batch
2026-05-28 13:42 UTCepss_batch
2026-05-27 13:38 UTCepss_batch
2026-05-27 13:38 UTCepss_batch
2026-05-26 13:42 UTCepss_batch
2026-05-26 13:42 UTCepss_batch
2026-05-26 07:17 UTCepss_batch
2026-05-24 16:44 UTCepss_batch
2026-05-22 21:15 UTCepss_batch
2026-05-22 18:04 UTCEG score recompute
2026-05-22 18:04 UTCGHSA enrichment

Frequently asked(5)

What is CVE-2016-9188?

CVE-2016-9188 is a medium vulnerability published on November 4, 2016. Cross-site scripting (XSS) vulnerabilities in Moodle CMS on or before 3.1.2 allow remote attackers to inject arbitrary web script or HTML via the sadditionalhtmlhead, sadditionalhtmltopofbody, and s_additionalhtmlfooter parameters.

When was CVE-2016-9188 disclosed?

CVE-2016-9188 was first published in the National Vulnerability Database on November 4, 2016, with the most recent update on May 6, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.

Is CVE-2016-9188 actively exploited?

CVE-2016-9188 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 47.2% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.

What is the CVSS score of CVE-2016-9188?

CVE-2016-9188 has a CVSS v3 base score of 6.1 (NVD).

How do I remediate CVE-2016-9188?

Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2016-9188, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

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CVE-2016-9188

📅 Published

🔄 Last Modified

🔗 References (4)

Patch Availability(1)

Affected Packages

Data Freshness Timeline

❓ Frequently asked(5)

Dependency Blast Radius

Is Your Infrastructure Affected by CVE-2016-9188?

🔗 Related CVEs(same product)

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Published

Last Modified

References (4)

Frequently asked(5)

Related CVEs(same product)