CVE-2021-43558
MEDIUM
6.1
CVSS Score
Published: November 22, 2021 at 03:59 PM UTC
Updated: June 17, 2026 at 04:11 AM UTC
4 products affected across 2 vendorsFedoraMoodleExtra Packages for Enterprise Linux
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Severity
MEDIUM6.1
Exploit prediction
EPSS 0.9%
Description
A flaw was found in Moodle in versions 3.11 to 3.11.3, 3.10 to 3.10.7, 3.9 to 3.9.10 and earlier unsupported versions. A URL parameter in the filetype site administrator tool required extra sanitizing to prevent a reflected XSS risk.
Affected
Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.
95%
v ≤ 3.8.83.10.0 ≤ v < 3.10.83.11.0 ≤ v < 3.11.43.9.0 ≤ v < 3.9.11
Affected range stops below 3.10.8, so it looks safe — our inference, not a vendor statement
Affected range stops below 3.11.4, so it looks safe — our inference, not a vendor statement
Affected range stops below 3.9.11, so it looks safe — our inference, not a vendor statement
Remediation
No guide yetNo remediation guidance has been written for this CVE yet. What the record does show:
Patch and advisory references
References (2)
x_refsource_MISCIssue TrackingThird Party Advisory
Source: [email protected]
https://bugzilla.redhat.com/show_bug.cgi?id=2021515x_refsource_MISCPatchVendor Advisory
Source: [email protected]
https://moodle.org/mod/forum/discuss.php?d=429097CVSS
- Attack Vector
- NETWORK
- Complexity
- LOW
- Privileges
- NONE
- User Interaction
- REQUIRED
- Scope
- CHANGED
- Confidentiality
- LOW
- Integrity
- LOW
- Availability
- NONE
Vector?
Quick Info
StatusMODIFIED
CWE
CWE-79
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