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I. Basic Information for CVE-2026-23490
Vulnerability Information

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Vulnerability Title
pyasn1 has a DoS vulnerability in decoder
Source: NVD (National Vulnerability Database)
Vulnerability Description
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.
Source: NVD (National Vulnerability Database)
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Source: NVD (National Vulnerability Database)
Vulnerability Type
不加限制或调节的资源分配
Source: NVD (National Vulnerability Database)
Vulnerability Title
pyasn1 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
pyasn1是pyasn1 maintenance organization开源的一个Python库。 pyasn1 0.6.2之前版本存在安全漏洞,该漏洞源于处理畸形RELATIVE-OID时存在内存耗尽问题,可能导致拒绝服务。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)
Affected Products
VendorProductAffected VersionsCPESubscribe
pyasn1pyasn1 < 0.6.2 -
II. Public POCs for CVE-2026-23490
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III. Intelligence Information for CVE-2026-23490
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