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THREAT OPSThreat News › [NVD] CVE-2026-23490 (HIGH 7.5) — 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.

[NVD] CVE-2026-23490 (HIGH 7.5) — 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.

lownvdPublished 2026-01-16

CVE-2026-23490 CVSS: 7.5 HIGH Published: 2026-01-16T19:16:19.117

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.

Indicators of compromise

Original source: https://nvd.nist.gov/vuln/detail/CVE-2026-23490