Moodle does not set the RISK_XSS bit for graders
mod/quiz/db/access.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 does not set the RISK_XSS bit for graders, which allows remote authenticated users to conduct cross-site scripting (XSS) attacks via crafted gradebook feedback during manual quiz grading.
Affected software
Click a technology to see all vulnerabilities affecting it.
| Platform | Package | Vulnerable versions | Fixed in |
|---|---|---|---|
| Composer package | moodle/moodle | < 2.6.11, >= 2.7.0, < 2.7.8, >= 2.8.0, < 2.8.6 | 2.6.11, 2.7.8, 2.8.6 |
References
- https://nvd.nist.gov/vuln/detail/CVE-2015-3174
- https://github.com/moodle/moodle/commit/10c2b92448873a8479942098a090e7c16b44438d
- https://github.com/moodle/moodle/commit/1ce4f44df7e793051211841b6a78ac77bd42fc99
- https://github.com/moodle/moodle/commit/39ae18a2f90fcf392a711dd41f9aa7627f72a762
- https://github.com/moodle/moodle/commit/e51fdfe0cbab19320f139773d83aacb1ad15eb46
- https://github.com/moodle/moodle
- https://moodle.org/mod/forum/discuss.php?d=313681
- https://web.archive.org/web/20201030042703/http://www.securitytracker.com/id/1032358
- http://git.moodle.org/gw?p=moodle.git&a=search&h=HEAD&st=commit&s=MDL-49941
- http://openwall.com/lists/oss-security/2015/05/18/1
- http://www.securityfocus.com/bid/74719https://web.archive.org/web/20200228054910/http://www.securityfocus.com/bid/74719
- Weakness (CWE)
CWE-79- Platform
- Composer
- Package
moodle/moodle- Disclosed
- 13.05.2022
- Updated
- 11.10.2026 10:22
Sources and licenses
OSV / GitHub Advisory Database - GHSA-6r7x-6q98-qcqp - CC BY 4.0
Vulnerability history: moodle/moodle
All published vulnerabilities of this package (Composer package), newest first. Shows whether this is a one-off slip or a package that needs watching.
- Total entries
- 437
- First → latest
- 03.2021 02.2026
- Without a fix
- 10
- Exploited in attacks
- 0
Severity breakdown
- Critical 16
- High 68
- Medium 318
- Low 35
Disclosures per year
- 2021: 11
- 2022: 285
- 2023: 43
- 2024: 53
- 2025: 33
- 2026: 12
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Moodle does not set the RISK_XSS bit for graders this entry
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