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OESA-2026-3608 python-ujson security update

🗓️ 05 Sep 2026 15:03:07Reported by GoogleType 
osv
 osv🔗 osv.dev👁 4 Views

UltraJSON up to 5.13.0 suffers buffer overflow, infinite loop, and memory leak causing DoS.

Related
Refs
ReporterTitlePublishedViews
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ibm
IBM Security Bulletins		Security Bulletin:UltraJSON Memory Leak Fix in ujson.dump() Prior to 5.12.1
4 Aug 202609:57
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IBM Security Bulletins		Security Bulletin: IBM Watson Speech Services Cartridge is vulnerable to a memory leak or buffer overflow in UltraJSON [CVE-2026-32874, CVE-2026-32875]
21 May 202615:13
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IBM Security Bulletins		Security Bulletin: Multiple vulnerabilities in IBM watsonx Orchestrate Developer Edition
12 Jun 202611:10
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IBM Security Bulletins		Security Bulletin: Multiple vulnerabilities in IBM watsonx Orchestrate Developer Edition
7 Aug 202608:26
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IBM Security Bulletins		Security Bulletin: Vulnerabilities found in Watson Data Intelligence
18 Aug 202608:28
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IBM Security Bulletins		Security Bulletin: Maximo AI Service uses multiple third party dependencies which are vulnerable to multiple CVEs.
27 Aug 202619:18
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IBM Security Bulletins		Security Bulletin: UltraJSON Memory Leak in Large Integer Parsing Enables Denial of Service
4 May 202612:32
–ibm
ibm
IBM Security Bulletins		Security Bulletin: IBM Watson Speech Services Cartridge is vulnerable to a memory leak in UltraJSON [CVE-2026-44660]
27 Jul 202620:19
–ibm
ibm
IBM Security Bulletins		Security Bulletin: IBM Cloud Pak for Security includes components with multiple known vulnerabilities
12 Jan 202317:22
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IBM Security Bulletins		Security Bulletin: IBM App Connect Enterprise Certified Container DesignerAuthoring operands that use mapping assistance are vulnerable to denial of service (CVE-2026-32874, CVE-2026-32875)
25 Mar 202612:45
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05 Sep 2026 15:16Current
6.8Medium risk
Vulners AI Score6.8
CVSS 3.17.5
EPSS0.0155
UltraJSONbuffer overflowinfinite loopmemory leakdenial of serviceindent handling
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