SB2026051931 - IBM Watson Discovery Cartridge update for pyasn1

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Main Vulnerability Database SB2026051931

SB2026051931 - IBM Watson Discovery Cartridge update for pyasn1

Published: May 19, 2026

Security Bulletin ID SB2026051931
CSH Severity
Medium
Patch available
YES
Number of vulnerabilities 1
Exploitation vector Remote access
Highest impact Denial of service

Breakdown by Severity

Medium 100%
  • Low
  • Medium
  • High
  • Critical

Description

This security bulletin contains information about 1 vulnerability.


1) Uncontrolled Recursion (CVE-ID: CVE-2026-30922)

CWE-ID: CWE-674 - Uncontrolled Recursion

CVSSv4: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Green


The vulnerability allows a remote attacker to cause a denial of service.

The vulnerability exists due to uncontrolled recursion in the pyasn1 BER decoder when decoding deeply nested ASN.1 data with indefinite-length constructed types. A remote attacker can supply a specially crafted payload containing nested SEQUENCE or SET tags to cause a denial of service.

Services that parse untrusted ASN.1 data may terminate with a RecursionError or exhaust available memory.


Remediation

Install update from vendor's website.

References