Bug 2464363 (CVE-2026-43507)

Summary: CVE-2026-43507 Prosody: Prosody: Denial of Service via XML parsing resource amplification
Product: [Other] Security Response Reporter: OSIDB Bzimport <bzimport>
Component: vulnerabilityAssignee: Product Security <prodsec-ir-bot>
Status: NEW --- QA Contact:
Severity: high Docs Contact:
Priority: high    
Version: unspecifiedKeywords: Security
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Hardware: All   
OS: Linux   
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A flaw was found in Prosody. An unauthenticated remote attacker can exploit this vulnerability by sending specially crafted XML data, leading to excessive memory consumption. This memory exhaustion can cause a Denial of Service (DoS), making the service unavailable to legitimate users.
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oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
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Bug Depends On: 2466692, 2466693    
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Description OSIDB Bzimport 2026-05-01 15:02:26 UTC
An issue was discovered in Prosody before 0.12.6 and 1.0.0 through 13.0.0 before 13.0.5. A Denial of Service can occur via memory exhaustion caused by XML parsing resource amplification from unauthenticated connections.