Bug 2561423 (CVE-2026-116584)

Summary:	CVE-2026-116584 seroval: seroval: Denial of Service via manipulated array length during deserialization
Product:	[Other] Security Response	Reporter:	OSIDB Bzimport <bzimport>
Component:	vulnerability	Assignee:	Product Security DevOps Team <prodsec-dev>
Status:	NEW ---	QA Contact:
Severity:	high	Docs Contact:
Priority:	high
Version:	unspecified	CC:	blitton, mbarnett
Target Milestone:	---	Keywords:	Security
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Hardware:	All
OS:	Linux
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Doc Text:	A flaw was found in seroval. A remote, unauthenticated attacker can trigger a Denial of Service (DoS) by supplying a crafted serialized payload containing a manipulated array length. Because the deserialization routines do not verify that an array node contains a valid list of elements, the application allocates excessive memory and enters extensive processing loops, causing the process to block execution threads or exhaust available system resources.	Story Points:	---
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oVirt Team:	---	RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---	Target Upstream Version:
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Description OSIDB Bzimport 2026-10-26 22:30:07 UTC

Seroval facilitates JavaScript value stringification, including complex structures beyond JSON.stringify capabilities. From 1.4.1 until 1.6.8, fromJSON and fromCrossJSON do not require an array node's element list to be an actual array. A small crafted payload can supply an attacker-controlled length that determines memory allocation and decoder iterations independently of payload size, allowing an unauthenticated request to exhaust the process or block its thread. This issue is a residual bypass of the remediation for CVE-2026-23957. This issue is fixed in version 1.6.8.