Bug 2494835 (CVE-2026-58347)

Summary: CVE-2026-58347 moodle: DoS risk via user profile description
Product: [Other] Security Response Reporter: OSIDB Bzimport <bzimport>
Component: vulnerabilityAssignee: Product Security DevOps Team <prodsec-dev>
Status: NEW --- QA Contact:
Severity: medium Docs Contact:
Priority: medium    
Version: unspecifiedCC: security-response-team
Target Milestone: ---Keywords: Security
Target Release: ---   
Hardware: All   
OS: Linux   
Whiteboard:
Fixed In Version: Doc Type: ---
Doc Text:
A flaw was found in Moodle. Authenticated users could cause a Denial of Service (DoS) by providing an excessively long user profile description. This vulnerability is due to the absence of a defined maximum length for user profile descriptions, which could lead to resource exhaustion.
Story Points: ---
Clone Of: Environment:
Last Closed: Type: ---
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Documentation: --- CRM:
Verified Versions: Category: ---
oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: --- Target Upstream Version:
Embargoed:
Bug Depends On: 2507958    
Bug Blocks:    
Deadline: 2026-07-01   

Description OSIDB Bzimport 2026-06-30 10:37:49 UTC
MSA-26-0028: DoS risk via user profile description

Description:       User profile descriptions for authenticated users posed a
denial of service risk due to the absence of a defined
maximum length.
Issue summary:     DoS risk via user profile description
Severity/Risk:     Serious
Versions affected: 5.2, 5.1 to 5.1.4, 5.0 to 5.0.7, 4.5 to 4.5.11 and earlier
unsupported versions
Versions fixed:    5.2.1, 5.1.5, 5.0.8 and 4.5.12
Reported by:       David Bogner
Issue no.:         MDL-87898