PyPI/pyasn1 CVE-2026-59885: high 7.5, EPSS 0.62%

pyasn1: Quadratic complexity in OBJECT IDENTIFIER and RELATIVE-OID processing allows denial of service

Action: Upgrade pyasn1 to 0.6.4 or later.

pip install pyasn1==0.6.4

Affected

Fixed versions

Sources

• osv: GHSA-8ppf-4f7h-5ppj
• https://github.com/pyasn1/pyasn1/security/advisories/GHSA-8ppf-4f7h-5ppj
• https://nvd.nist.gov/vuln/detail/CVE-2026-59885
• https://github.com/pyasn1/pyasn1/commit/45bdb19eb7df4b3780fe9c912c63e99bffc39dd9
• https://github.com/pyasn1/pyasn1
• https://github.com/pyasn1/pyasn1/releases/tag/v0.6.4

CVE-2026-59885 · published 2026-07-21T19:11:03Z · modified 2026-09-10T03:51:11.103855167Z · JSON