CVE-2026-23490

pyasn1 is a generic ASN.1 library for Python. Prior to 0.6.2, a Denial-of-Service issue has been found that leads to memory exhaustion from malformed RELATIVE-OID with excessive continuation octets. This vulnerability is fixed in 0.6.2.

CVSS v3 7.5 HIGH

7.5^/10

CVSS v3 : HIGH

Vector :

Exploitability : 3.9 / Impact : 3.6

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://github.com/pyasn1/pyasn1/commit/3908f144229eed4df24bd569d16e5991ace44970	Patch
https://github.com/pyasn1/pyasn1/releases/tag/v0.6.2	Product Release Notes
https://github.com/pyasn1/pyasn1/security/advisories/GHSA-63vm-454h-vhhq	Vendor Advisory
https://lists.debian.org/debian-lts-announce/2026/02/msg00002.html	Vendor Advisory

Configurations

Configuration 1 (hide)

cpe:2.3:a:pyasn1:pyasn1:*:*:*:*:*:python:*:*

Configuration 2 (hide)

cpe:2.3:o:debian:debian_linux:11.0:*:*:*:*:*:*:*

History

No history.

Information

Published : 2026-01-16 19:16

Updated : 2026-03-13 14:19

NVD link : CVE-2026-23490

Mitre link : CVE-2026-23490

CVE.ORG link : CVE-2026-23490

JSON object : View

Products Affected

debian

debian_linux

pyasn1

pyasn1

CWE

CWE-770

Allocation of Resources Without Limits or Throttling

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