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pyasn1 has a DoS vulnerability in decoder

CVSS 3.1 7.5 HIGHCheck source for fixed versionsKEV status unknown

cve-program · CVE-2026-23490

Published

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.

Read the publisher's advisory

Affected versions, risk and source history

cve-program · CVE-2026-23490

Published

pyasn1

Vendor product

Publisher's version information

Shown as published. These rules are not interpreted as NuGet package version ranges.

{
                    "vendor": "pyasn1",
                    "product": "pyasn1",
                    "versions": [
                        {
                            "version": "< 0.6.2",
                            "status": "affected"
                        }
                    ]
                }

Original source record · Cite this exact observation · Complete original publisher JSON

ChangeIntel

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Sources read 13 Nov 09:00 UTC · 274 of 275 readable · 272 fully read · documentation 469/469 current