{"id":"CVE-2026-23490","summary":"pyasn1 has a DoS vulnerability in decoder","details":"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.","aliases":["GHSA-63vm-454h-vhhq"],"modified":"2026-04-02T13:12:51.208847Z","published":"2026-01-16T19:03:36.442Z","related":["ALSA-2026:1903","ALSA-2026:1904","ALSA-2026:1905","ALSA-2026:1906","ALSA-2026:3354","ALSA-2026:3359","ALSA-2026:4146","CGA-2xv8-pf5x-hq9x","MGASA-2026-0020","SUSE-SU-2026:0252-1","SUSE-SU-2026:0300-1","SUSE-SU-2026:0430-1","SUSE-SU-2026:20133-1","SUSE-SU-2026:20158-1","SUSE-SU-2026:20447-1","SUSE-SU-2026:20482-1","openSUSE-SU-2026:10078-1","openSUSE-SU-2026:20089-1"],"database_specific":{"cwe_ids":["CWE-770"],"cna_assigner":"GitHub_M","osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/23xxx/CVE-2026-23490.json"},"references":[{"type":"WEB","url":"https://github.com/pyasn1/pyasn1/releases/tag/v0.6.2"},{"type":"WEB","url":"https://lists.debian.org/debian-lts-announce/2026/02/msg00002.html"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/23xxx/CVE-2026-23490.json"},{"type":"ADVISORY","url":"https://github.com/pyasn1/pyasn1/security/advisories/GHSA-63vm-454h-vhhq"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-23490"},{"type":"FIX","url":"https://github.com/pyasn1/pyasn1/commit/3908f144229eed4df24bd569d16e5991ace44970"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/pyasn1/pyasn1","events":[{"introduced":"0"},{"fixed":"e7356f89cf32c130d65b1a0e903fe7ecce426424"}]}],"versions":["0.2.3","v0.2.1","v0.2.2","v0.3.1","v0.3.2","v0.3.3","v0.3.4","v0.3.5","v0.3.6","v0.3.7","v0.4.1","v0.4.2","v0.4.3","v0.4.4","v0.4.5","v0.4.6","v0.4.7","v0.4.8","v0.5.0","v0.5.1","v0.6.0","v0.6.1"],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-23490.json"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"}]}