CVE-2021-20281
MEDIUM
5.3
CVSS Score
Published: March 15, 2021 at 09:35 PM UTC
Updated: June 17, 2026 at 03:33 AM UTC
2 products affected across 2 vendorsFedoraMoodle
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Severity
MEDIUM5.3
Exploit prediction
EPSS 1%
Description
It was possible for some users without permission to view other users' full names to do so via the online users block in moodle before 3.10.2, 3.9.5, 3.8.8, 3.5.17.
Affected
Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.
3.10.0 ≤ v < 3.10.23.5.0 ≤ v < 3.5.173.8.0 ≤ v < 3.8.83.9.0 ≤ v < 3.9.5
Vendor states this is fixed in 3.10.2 (unaffected)
Affected range stops below 3.5.17, so it looks safe — our inference, not a vendor statement
Affected range stops below 3.8.8, so it looks safe — our inference, not a vendor statement
Affected range stops below 3.9.5, 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
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/AFSNJ7XHVTC52RSRX2GBQFF3VEEAY2MS/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/UFH5DDMU5TZ3JT4Q52WMRAHACA5MHIMT/
- https://moodle.org/mod/forum/discuss.php?d=419652
References (4)
x_refsource_MISCIssue TrackingThird Party Advisory
Source: [email protected]
https://bugzilla.redhat.com/show_bug.cgi?id=1939041Vendor Advisoryx_refsource_FEDORA
Source: [email protected]
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/AFSNJ7XHVTC52RSRX2GBQFF3VEEAY2MS/Vendor Advisoryx_refsource_FEDORA
Source: [email protected]
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/UFH5DDMU5TZ3JT4Q52WMRAHACA5MHIMT/x_refsource_MISCPatchVendor Advisory
Source: [email protected]
https://moodle.org/mod/forum/discuss.php?d=419652CVSS
- Attack Vector
- NETWORK
- Complexity
- LOW
- Privileges
- NONE
- User Interaction
- NONE
- Scope
- UNCHANGED
- Confidentiality
- LOW
- Integrity
- NONE
- Availability
- NONE
Vector?
Quick Info
StatusMODIFIED
CWE
CWE-200CWE-863
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