{"cve":"CVE-2026-23490","nvd":{"published":"2026-01-16T19:16:19.117","modified":"2026-09-09T13:18:50.673","status":"Modified","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.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","score":7.5},"cwes":["CWE-770"],"references":["https://github.com/pyasn1/pyasn1/commit/3908f144229eed4df24bd569d16e5991ace44970","https://github.com/pyasn1/pyasn1/releases/tag/v0.6.2","https://github.com/pyasn1/pyasn1/security/advisories/GHSA-63vm-454h-vhhq","https://lists.debian.org/debian-lts-announce/2026/02/msg00002.html","https://access.redhat.com/errata/RHSA-2026:13508"],"products":["debian:debian_linux","pyasn1:pyasn1"],"source":"nvd","synced_at":"2026-10-19T22:21:16.563232421+00:00"},"epss":{"cve":"CVE-2026-23490","score":0.0076,"percentile":0.55291,"date":"2026-10-31"},"kev":null,"osv":[{"id":"GHSA-63vm-454h-vhhq","url":"https://osv.dev/vulnerability/GHSA-63vm-454h-vhhq","summary":"pyasn1 has a DoS vulnerability in decoder","modified":"2026-09-10T03:49:54.331513613Z","packages":[{"ecosystem":"PyPI","name":"pyasn1","purl":"pkg:pypi/pyasn1","ranges":[">=0.6.1 <0.6.2"],"fixed":["0.6.2"]}]},{"id":"PYSEC-2026-1810","url":"https://osv.dev/vulnerability/PYSEC-2026-1810","summary":"pyasn1 has a DoS vulnerability in decoder","modified":"2026-07-07T17:48:03.492099219Z","packages":[{"ecosystem":"PyPI","name":"pyasn1","purl":"pkg:pypi/pyasn1","ranges":[">=0.6.1 <0.6.2"],"fixed":["0.6.2"]}]}],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}