NVD - CVE-2026-30922 (original) (raw)

Change History

4 change records found show changes

CVE Modified by CVE 5/01/2026 1:16:21 PM

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Added Reference https://lists.debian.org/debian-lts-announce/2026/05/msg00001.html

CVE Modified by CVE 3/20/2026 9:17:06 PM

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Added Reference http://www.openwall.com/lists/oss-security/2026/03/20/4

Initial Analysis by NIST 3/20/2026 1:48:30 PM

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Added CPE Configuration OR *cpe:2.3:a:pyasn1:pyasn1:*:*:*:*:*:python:*:* versions up to (excluding) 0.6.3
Added Reference Type GitHub, Inc.: https://github.com/pyasn1/pyasn1/commit/25ad481c19fdb006e20485ef3fc2e5b3eff30ef0 Types: Patch
Added Reference Type GitHub, Inc.: https://github.com/pyasn1/pyasn1/security/advisories/GHSA-jr27-m4p2-rc6r Types: Exploit, Vendor Advisory

New CVE Received from GitHub, Inc. 3/18/2026 12:17:18 AM

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Added Description pyasn1 is a generic ASN.1 library for Python. Prior to 0.6.3, the `pyasn1` library is vulnerable to a Denial of Service (DoS) attack caused by uncontrolled recursion when decoding ASN.1 data with deeply nested structures. An attacker can supply a crafted payload containing thousands of nested `SEQUENCE` (`0x30`) or `SET` (`0x31`) tags with "Indefinite Length" (`0x80`) markers. This forces the decoder to recursively call itself until the Python interpreter crashes with a `RecursionError` or consumes all available memory (OOM), crashing the host application. This is a distinct vulnerability from CVE-2026-23490 (which addressed integer overflows in OID decoding). The fix for CVE-2026-23490 (`MAX_OID_ARC_CONTINUATION_OCTETS`) does not mitigate this recursion issue. Version 0.6.3 fixes this specific issue.
Added CVSS V3.1 AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Added CWE CWE-674
Added Reference https://github.com/pyasn1/pyasn1/commit/25ad481c19fdb006e20485ef3fc2e5b3eff30ef0
Added Reference https://github.com/pyasn1/pyasn1/security/advisories/GHSA-jr27-m4p2-rc6r