Bug 2469184 (CVE-2026-43896)

Summary: CVE-2026-43896 jq: stack overflow in recursive object merge
Product: [Other] Security Response Reporter: OSIDB Bzimport <bzimport>
Component: vulnerabilityAssignee: Product Security <prodsec-ir-bot>
Status: NEW --- QA Contact:
Severity: medium Docs Contact:
Priority: medium    
Version: unspecifiedCC: amctagga, aoconnor, bniver, dschmidt, erezende, flucifre, gmeno, groman, jlanda, jmitchel, kshier, mbenjamin, mhackett, rhel-process-autobot, simaishi, smcdonal, sostapov, stcannon, teagle, vereddy, watson-tool-maintainers, yguenane
Target Milestone: ---Keywords: Security
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Hardware: All   
OS: Linux   
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A flaw was found in jq, a command line JSON processor. The `jv_object_merge_recursive` function, reachable via the `*` operator when both operands are objects, does not have a depth limit when processing nested objects. This missing depth limit allows an attacker who can supply a sufficiently nested input structure to exhaust the stack memory, causing an application crash and resulting in a denial of service.
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oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
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Bug Depends On: 2477180    
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Description OSIDB Bzimport 2026-05-11 18:02:26 UTC
jq is a command-line JSON processor. In 1.8.1 and earlier, unbounded recursion in jv_object_merge_recursive() allows a crafted jq program to crash the process with a segfault. The function is reachable through the * operator when both operands are objects.