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pyasn1 has a DoS vulnerability in decoder

🗓️ 16 Jan 2026 19:19:25Reported by GitHub Advisory DatabaseType 
github
 github🔗 github.com👁 6 Views

pyasn1 v0.6.1 BER decoder DoS via malformed RELATIVE-OBJECT IDENTIFIER with excessive continuation octets.

Related
Detection
Refs
ReporterTitlePublishedViews
Family
IBM Security Bulletins		Security Bulletin: Maximo AI Service uses multiple third party dependencies which is vulnerable to multiple CVEs.
31 Mar 202613:54
–ibm
IBM Security Bulletins		Security Bulletin: There is a vulnerability in pyasn1-0.6.1.tar.gz used by IBM Maximo Manage application in IBM Maximo Application Suite (CVE-2026-23490)
2 Feb 202612:13
–ibm
IBM Security Bulletins		Security Bulletin: Vulnerability in pyasn1 affects IBM watsonx Assistant Cartridge and IBM watsonx Orchestrate with watsonx Assistant Cartridge.
4 May 202614:26
–ibm
IBM Security Bulletins		Security Bulletin: IBM Maximo Application Suite - Monitor Component uses pyasn1-0.6.1.tar.gz which is vulnerable to CVE-2026-23490.
27 Feb 202611:53
–ibm
IBM Security Bulletins		Security Bulletin: IBM Maximo Application Suite - Visual Inspection component uses pyasn1 which is vulnerable to CVE-2026-23490
20 Mar 202610:10
–ibm
IBM Security Bulletins		Security Bulletin: IBM Maximo Application Suite - IoT Component uses multiple third party dependencies which are vulnerable to CVEs.
5 Mar 202604:55
–ibm
IBM Security Bulletins		Security Bulletin: IBM Watson Speech Services Cartridge is vulnerable to a Denial-of-Service in pyasn1 [CVE-2026-23490]
14 Apr 202615:21
–ibm
IBM Security Bulletins		Security Bulletin: IBM Guardium Data Security Center is affected by multiple vulnerabilities
2 Mar 202614:44
–ibm
IBM Security Bulletins		Security Bulletin: pyasn1 Memory Exhaustion via Malformed RELATIVE-OID Leads to Denial of Service
4 May 202612:28
–ibm
IBM Security Bulletins		Security Bulletin: IBM Maximo Application Suite uses pyasn1-0.6.1, protobuf-6.33.4-cp39-abi3-manylinux2014_x86_64, urllib3-2.5.0-py3-none-any, database/sql 1.24.4 and weasyprint-67.0-py3-none-any.
3 Mar 202606:49
–ibm
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Vulners
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pyasn1pyasn1Match0.6.1pip

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01 Feb 2026 18:30Current
6.9Medium risk
Vulners AI Score6.9
CVSS 3.17.5
EPSS0.00032
SSVC
CWE-400CWE-770
pyasn1denial of serviceber decoderrelative object identifiercontinuation octetsmemory exhaustion
6