Cross-site scripting (XSS) vulnerability in the tag autocomplete functionality in Moodle 1.9.x before 1.9.11 and 2.0.x before 2.0.2 allows remote attackers to inject arbitrary web script or HTML via unspecified vectors.
CVE-2011-4278
NONECVSS 0.0
0.0
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
- No confirmed exploitation signals yet
CISA-KEV: Not listedEPSS: 2%CVSS: —Exploit: NoneExposed: 0
No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.
- CVSS v3
- —
- EG Score
- 0.0(none)
- EPSS
- 76.3%
- KEV
- Not listed
Published
July 16, 2012
Last Modified
April 29, 2026
References (6)
- secalert@redhathttp://git.moodle.org/gw?p=moodle.git%3Ba=commit%3Bh=fd29b2ad1c20906da00d7e523f39bc8a0358a65b
- secalert@redhathttp://moodle.org/mod/forum/discuss.php?d=170003
- secalert@redhathttp://openwall.com/lists/oss-security/2011/11/14/1
- af854a3a-2127-422b-91ae-364da2661108http://git.moodle.org/gw?p=moodle.git%3Ba=commit%3Bh=fd29b2ad1c20906da00d7e523f39bc8a0358a65b
- af854a3a-2127-422b-91ae-364da2661108http://moodle.org/mod/forum/discuss.php?d=170003
- af854a3a-2127-422b-91ae-364da2661108http://openwall.com/lists/oss-security/2011/11/14/1
Frequently asked(4)
What is CVE-2011-4278?
CVE-2011-4278 is a none vulnerability published on July 16, 2012. Cross-site scripting (XSS) vulnerability in the tag autocomplete functionality in Moodle 1.9.x before 1.9.11 and 2.0.x before 2.0.2 allows remote attackers to inject arbitrary web script or HTML via unspecified vectors.
When was CVE-2011-4278 disclosed?
CVE-2011-4278 was first published in the National Vulnerability Database on July 16, 2012, with the most recent update on April 29, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2011-4278 actively exploited?
CVE-2011-4278 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 76.3% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
How do I remediate CVE-2011-4278?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2011-4278, 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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