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Vulnerability details: VCID-8a4a-pz1v-zua5
Vulnerability ID VCID-8a4a-pz1v-zua5
Aliases CVE-2015-3178
GHSA-9fmw-m4qx-6cq8
Summary Moodle cross-site scripting (XSS) vulnerability Cross-site scripting (XSS) vulnerability in the external_format_text function in lib/externallib.php in Moodle through 2.5.9, 2.6.x before 2.6.11, 2.7.x before 2.7.8, and 2.8.x before 2.8.6 allows remote authenticated users to inject arbitrary web script or HTML into an external application via a crafted string that is visible to web services.
Status Published
Exploitability 0.5
Weighted Severity 2.7
Risk 1.4
Affected and Fixed Packages Package Details
Weaknesses (3)
CWE-79 Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
CWE-1035 OWASP Top Ten 2017 Category A9 - Using Components with Known Vulnerabilities
CWE-937 OWASP Top Ten 2013 Category A9 - Using Components with Known Vulnerabilities
System Score Found at
generic_textual LOW http://git.moodle.org/gw?p=moodle.git&a=search&h=HEAD&st=commit&s=MDL-49718
generic_textual LOW http://openwall.com/lists/oss-security/2015/05/18/1
epss 0.00208 https://api.first.org/data/v1/epss?cve=CVE-2015-3178
epss 0.00208 https://api.first.org/data/v1/epss?cve=CVE-2015-3178
cvssv3.1_qr LOW https://github.com/advisories/GHSA-9fmw-m4qx-6cq8
generic_textual LOW https://github.com/moodle/moodle
generic_textual LOW https://github.com/moodle/moodle/commit/28947c1d7d9c53781989b9da7ceb2cafdd144749
generic_textual LOW https://github.com/moodle/moodle/commit/2c7d13dba37aa0c850c62037b951efd6dc1b0f78
generic_textual LOW https://github.com/moodle/moodle/commit/77067fbb3a248ac2f1fa4b3c20e5b81f768940e5
generic_textual LOW https://github.com/moodle/moodle/commit/7f5bd0da0e25feb3b6da3908b6672a58af82e12f
generic_textual LOW https://github.com/moodle/moodle/commit/b4da1e0ae4f63ef0bb14b8bf5c0b86cd00f2af4b
generic_textual LOW https://github.com/moodle/moodle/commit/d62d36c657a5df45ee286722490abb7901381da6
generic_textual LOW https://moodle.org/mod/forum/discuss.php?d=313685
generic_textual LOW https://nvd.nist.gov/vuln/detail/CVE-2015-3178
generic_textual LOW https://web.archive.org/web/20200228054910/http://www.securityfocus.com/bid/74726
generic_textual LOW https://web.archive.org/web/20201201000000*/http://www.securitytracker.com/id/1032358
Reference id Reference type URL
http://git.moodle.org/gw?p=moodle.git&a=search&h=HEAD&st=commit&s=MDL-49718
http://openwall.com/lists/oss-security/2015/05/18/1
https://api.first.org/data/v1/epss?cve=CVE-2015-3178
https://github.com/moodle/moodle
https://github.com/moodle/moodle/commit/28947c1d7d9c53781989b9da7ceb2cafdd144749
https://github.com/moodle/moodle/commit/2c7d13dba37aa0c850c62037b951efd6dc1b0f78
https://github.com/moodle/moodle/commit/77067fbb3a248ac2f1fa4b3c20e5b81f768940e5
https://github.com/moodle/moodle/commit/7f5bd0da0e25feb3b6da3908b6672a58af82e12f
https://github.com/moodle/moodle/commit/b4da1e0ae4f63ef0bb14b8bf5c0b86cd00f2af4b
https://github.com/moodle/moodle/commit/d62d36c657a5df45ee286722490abb7901381da6
https://moodle.org/mod/forum/discuss.php?d=313685
https://nvd.nist.gov/vuln/detail/CVE-2015-3178
https://web.archive.org/web/20200228054910/http://www.securityfocus.com/bid/74726
https://web.archive.org/web/20201201000000*/http://www.securitytracker.com/id/1032358
GHSA-9fmw-m4qx-6cq8 https://github.com/advisories/GHSA-9fmw-m4qx-6cq8
No exploits are available.
Exploit Prediction Scoring System (EPSS)
Percentile 0.43402
EPSS Score 0.00208
Published At June 30, 2025, 12:55 p.m.
Date Actor Action Source VulnerableCode Version
2025-07-01T12:30:57.413089+00:00 GithubOSV Importer Import https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2022/05/GHSA-9fmw-m4qx-6cq8/GHSA-9fmw-m4qx-6cq8.json 36.1.3