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TI-2011-03952 Aliases CVE-2011-4586GHSA-5hc2-8542-698w

CRLF injection vulnerability in calendar/set.php in the Calendar subsystem in Moodle…

Priority LOW 27Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
— Not recorded in CVSS 2.0
Attack complexity
Low
Impact type
—
Confidentiality · integrity · availability
None · Partial · None
Fix status
No fix listed

Attack profile from CVSS 2.0 · NVD. Fix status from CNA.

Summary

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

Why it matters now

EPSS 0.02102 81st percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet

SSVC decision points

Not available: CISA has not published SSVC decision points for this record.

Affected products

VendorProductAffected versionsFixed inStatusSource
——all versions—No fix listedCNA
  • — Vendor— Affected all versions Fixed in — No fix listed CNA

CPE configurations NVD · 23

CPEVersionsRoleVendor
cpe:2.3:a:moodle:moodle:1.9.1:*:*:*:*:*:*:*1.9.1VulnerableMoodle
cpe:2.3:a:moodle:moodle:1.9.2:*:*:*:*:*:*:*1.9.2VulnerableMoodle
cpe:2.3:a:moodle:moodle:1.9.3:*:*:*:*:*:*:*1.9.3VulnerableMoodle
cpe:2.3:a:moodle:moodle:1.9.4:*:*:*:*:*:*:*1.9.4VulnerableMoodle
cpe:2.3:a:moodle:moodle:1.9.5:*:*:*:*:*:*:*1.9.5VulnerableMoodle
cpe:2.3:a:moodle:moodle:1.9.6:*:*:*:*:*:*:*1.9.6VulnerableMoodle
cpe:2.3:a:moodle:moodle:1.9.7:*:*:*:*:*:*:*1.9.7VulnerableMoodle
cpe:2.3:a:moodle:moodle:1.9.8:*:*:*:*:*:*:*1.9.8VulnerableMoodle
cpe:2.3:a:moodle:moodle:1.9.9:*:*:*:*:*:*:*1.9.9VulnerableMoodle
cpe:2.3:a:moodle:moodle:1.9.10:*:*:*:*:*:*:*1.9.10VulnerableMoodle
  • cpe:2.3:a:moodle:moodle:1.9.1:*:*:*:*:*:*:* Versions 1.9.1 Vulnerable ·Moodle
  • cpe:2.3:a:moodle:moodle:1.9.2:*:*:*:*:*:*:* Versions 1.9.2 Vulnerable ·Moodle
  • cpe:2.3:a:moodle:moodle:1.9.3:*:*:*:*:*:*:* Versions 1.9.3 Vulnerable ·Moodle
  • cpe:2.3:a:moodle:moodle:1.9.4:*:*:*:*:*:*:* Versions 1.9.4 Vulnerable ·Moodle
  • cpe:2.3:a:moodle:moodle:1.9.5:*:*:*:*:*:*:* Versions 1.9.5 Vulnerable ·Moodle
  • cpe:2.3:a:moodle:moodle:1.9.6:*:*:*:*:*:*:* Versions 1.9.6 Vulnerable ·Moodle
  • cpe:2.3:a:moodle:moodle:1.9.7:*:*:*:*:*:*:* Versions 1.9.7 Vulnerable ·Moodle
  • cpe:2.3:a:moodle:moodle:1.9.8:*:*:*:*:*:*:* Versions 1.9.8 Vulnerable ·Moodle
  • cpe:2.3:a:moodle:moodle:1.9.9:*:*:*:*:*:*:* Versions 1.9.9 Vulnerable ·Moodle
  • cpe:2.3:a:moodle:moodle:1.9.10:*:*:*:*:*:*:* Versions 1.9.10 Vulnerable ·Moodle
Show 13 more CPE
CPEVersionsRoleVendor
cpe:2.3:a:moodle:moodle:1.9.11:*:*:*:*:*:*:*1.9.11VulnerableMoodle
cpe:2.3:a:moodle:moodle:1.9.12:*:*:*:*:*:*:*1.9.12VulnerableMoodle
cpe:2.3:a:moodle:moodle:1.9.13:*:*:*:*:*:*:*1.9.13VulnerableMoodle
cpe:2.3:a:moodle:moodle:1.9.14:*:*:*:*:*:*:*1.9.14VulnerableMoodle
cpe:2.3:a:moodle:moodle:2.0.0:*:*:*:*:*:*:*2.0.0VulnerableMoodle
cpe:2.3:a:moodle:moodle:2.0.1:*:*:*:*:*:*:*2.0.1VulnerableMoodle
cpe:2.3:a:moodle:moodle:2.0.2:*:*:*:*:*:*:*2.0.2VulnerableMoodle
cpe:2.3:a:moodle:moodle:2.0.3:*:*:*:*:*:*:*2.0.3VulnerableMoodle
cpe:2.3:a:moodle:moodle:2.0.4:*:*:*:*:*:*:*2.0.4VulnerableMoodle
cpe:2.3:a:moodle:moodle:2.0.5:*:*:*:*:*:*:*2.0.5VulnerableMoodle
cpe:2.3:a:moodle:moodle:2.1.0:*:*:*:*:*:*:*2.1.0VulnerableMoodle
cpe:2.3:a:moodle:moodle:2.1.1:*:*:*:*:*:*:*2.1.1VulnerableMoodle
cpe:2.3:a:moodle:moodle:2.1.2:*:*:*:*:*:*:*2.1.2VulnerableMoodle
  • cpe:2.3:a:moodle:moodle:1.9.11:*:*:*:*:*:*:* Versions 1.9.11 Vulnerable ·Moodle
  • cpe:2.3:a:moodle:moodle:1.9.12:*:*:*:*:*:*:* Versions 1.9.12 Vulnerable ·Moodle
  • cpe:2.3:a:moodle:moodle:1.9.13:*:*:*:*:*:*:* Versions 1.9.13 Vulnerable ·Moodle
  • cpe:2.3:a:moodle:moodle:1.9.14:*:*:*:*:*:*:* Versions 1.9.14 Vulnerable ·Moodle
  • cpe:2.3:a:moodle:moodle:2.0.0:*:*:*:*:*:*:* Versions 2.0.0 Vulnerable ·Moodle
  • cpe:2.3:a:moodle:moodle:2.0.1:*:*:*:*:*:*:* Versions 2.0.1 Vulnerable ·Moodle
  • cpe:2.3:a:moodle:moodle:2.0.2:*:*:*:*:*:*:* Versions 2.0.2 Vulnerable ·Moodle
  • cpe:2.3:a:moodle:moodle:2.0.3:*:*:*:*:*:*:* Versions 2.0.3 Vulnerable ·Moodle
  • cpe:2.3:a:moodle:moodle:2.0.4:*:*:*:*:*:*:* Versions 2.0.4 Vulnerable ·Moodle
  • cpe:2.3:a:moodle:moodle:2.0.5:*:*:*:*:*:*:* Versions 2.0.5 Vulnerable ·Moodle
  • cpe:2.3:a:moodle:moodle:2.1.0:*:*:*:*:*:*:* Versions 2.1.0 Vulnerable ·Moodle
  • cpe:2.3:a:moodle:moodle:2.1.1:*:*:*:*:*:*:* Versions 2.1.1 Vulnerable ·Moodle
  • cpe:2.3:a:moodle:moodle:2.1.2:*:*:*:*:*:*:* Versions 2.1.2 Vulnerable ·Moodle

Remediation

No fixed version listed by the sources yet.

Vendor assessments

Red Hat

Red Hat's page for this CVE →

Not affected: 1 product
  • Red Hat

Timeline

  1. 2026-10-02 Threatist record created from CVE-2011-4586
  2. 2026-10-03 Alias added: GHSA-5hc2-8542-698w

References

Advisory 2

Other 2

  • TI-2024-22468 moodle: unsafe direct use of $_SERVER['HTTP_REFERER'] in admin/tool/mfa/index.php CVSS 3.1CRITICAL 9.8
  • TI-2021-14741 In Moodle, an SQL injection risk was identified in the library fetching a user's recent courses. CVSS 3.1CRITICAL 9.8
  • TI-2024-29071 Moodle: remote code execution via calculated question types CVSS 3.1HIGH 8.1
  • TI-2016-06653 Moodle 3.1.2 allows remote attackers to obtain sensitive information via unspecified… CVSS 3.1HIGH 7.5
  • TI-2022-00259 SQL injection in moodle CVSS 3.1CRITICAL 9.8
  • TI-2022-16116 Path traversal in Moodle CVSS 3.1HIGH 7.5
See all 636 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences