CVE-2026-23490

high

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.

References

https://github.com/pyasn1/pyasn1/security/advisories/GHSA-63vm-454h-vhhq

https://github.com/pyasn1/pyasn1/releases/tag/v0.6.2

https://github.com/pyasn1/pyasn1/commit/3908f144229eed4df24bd569d16e5991ace44970

Details

Source: Mitre, NVD

Published: 2026-01-16

Updated: 2026-01-16

Risk Information

CVSS v2

Base Score: 7.8

Vector: CVSS2#AV:N/AC:L/Au:N/C:N/I:N/A:C

Severity: High

CVSS v3

Base Score: 7.5

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