kbrain

CVE-2011-4203

MEDIUM · CVSS 5.0EPSS 1.2%EU EUVD

CRLF injection vulnerability in calendar/set.php in the Calendar component in Moodle 1.9.x before 1.9.15, 2.0.x before 2.0.6, 2.1.x before 2.1.3, and 2.2 allows remote attackers to inject arbitrary HTTP headers and conduct HTTP response splitting attacks via vectors involving the url variable.

Key facts

CVSS score
5.0 (v2.0)
Severity
MEDIUM
CVSS vector
AV:N/AC:L/Au:N/C:N/I:P/A:N
Weakness (CWE)
CWE-94
EPSS score
1.2% (68th percentile)
In CISA KEV
No
In EU EUVD
Yes (EUVD-2022-2457)
Published
December 22, 2011
NVD last modified
June 16, 2026
Status
Modified

EU Vulnerability Database (EUVD)

This vulnerability is also tracked by ENISA as EUVD-2022-2457 in the EU Vulnerability Database. Last updated in EUVD on September 17, 2024.

View on the EU Vulnerability Database

Affected products

  • moodle / moodle
  • moodle / moodle
  • moodle / moodle
  • moodle / moodle
  • moodle / moodle
  • moodle / moodle
  • moodle / moodle
  • moodle / moodle
  • moodle / moodle
  • moodle / moodle
  • moodle / moodle
  • moodle / moodle
  • moodle / moodle
  • moodle / moodle
  • moodle / moodle
  • moodle / moodle
  • moodle / moodle
  • moodle / moodle
  • moodle / moodle
  • moodle / moodle
  • moodle / moodle
  • moodle / moodle
  • moodle / moodle
  • moodle / moodle

References

Last updated September 17, 2026 · Source: NVD, CISA KEV, FIRST.org EPSS

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