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7.5highHigh

CVE-2026-23490

Pyasn1 Pyasn1

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.

Exploitation status

  • A vendor advisory or patch reference has been published.

What the metrics mean

  • It is reachable over a network, without needing local access.
  • For an attacker who can reach it, no special conditions are needed to exploit it.
  • To exploit it, no account is needed.
  • Beyond that, no action by a user is required.

Scoring

CVSS
7.5 (v3.1)
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Weakness
CWE-770
Assigned by
security-advisories@github.com

Dates

Published
2026-01-16
Last modified
2026-08-27
Sources
NVD

Affected products

  • Pyasn1 Pyasn1- 0.6.2
  • Debian Debian Linux11.0

As listed in the NVD configuration data. Not a statement about your estate.

References