pyasn1 has a DoS vulnerability in decoder_CVE-2026-23490

7.5 / 10

HIGH

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

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.

Basic Information

ID CVE-2026-23490

Source GitHub_M

Published Jan 16, 2026 at 19:03

Modified Jan 16, 2026 at 19:23

Affected Product

Vendor pyasn1

Product pyasn1

Version < 0.6.2

Affected Versions pyasn1 pyasn1 < 0.6.2

CWE Classification

CWE-770

References

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    "published": "2026-01-16T19:03:36.442Z",
    "modified": "2026-01-16T19:23:51.965Z",
    "type": "cve",
    "title": "pyasn1 has a DoS vulnerability in decoder",
    "source": "GitHub_M",
    "references": "https://github.com/pyasn1/pyasn1/security/advisories/GHSA-63vm-454h-vhhq\nhttps://github.com/pyasn1/pyasn1/commit/3908f144229eed4df24bd569d16e5991ace44970\nhttps://github.com/pyasn1/pyasn1/releases/tag/v0.6.2",
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