SB2026090932 - Multiple vulnerabilities in IBM DataStage on Cloud Pak for Data
Published: September 9, 2026
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 6 vulnerabilities.
1) Insufficient verification of data authenticity (CVE-ID: CVE-2026-42960)
CWE-ID: CWE-345 - Insufficient Verification of Data Authenticity
CVSSv4: 8.3 [CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:L/VI:H/VA:N/SC:N/SI:N/SA:N]
The vulnerability allows a remote attacker to poison Unbound's DNS cache.
The vulnerability exists due to improper cache validation in processing authority and additional section RRSets when handling spoofed DNS replies or fragmented responses. A remote attacker can inject non-NS RRSets accompanied by related address records to poison Unbound's DNS cache.
Exploitation requires the ability to attach malicious records to a reply, such as through packet spoofing or fragmentation attacks.
2) Insufficient verification of data authenticity (CVE-ID: CVE-2025-11411)
CWE-ID: CWE-345 - Insufficient Verification of Data Authenticity
CVSSv4: 6.9 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N]
The vulnerability allows a remote attacker to poison DNS cache.
The vulnerability exists due to incorrect processing of DNS responses contain NS RRSets records. A remote attacker can poison DNS cache of the affected server.3) Use-after-free (CVE-ID: CVE-2026-33416)
CWE-ID: CWE-416 - Use After Free
CVSSv4: 7.5 [CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N]
The vulnerability allows a remote attacker to execute arbitrary code.
The vulnerability exists due to use-after-free in png_set_tRNS and png_set_PLTE when processing a crafted PNG file and subsequent decoding after png_free_data() or repeated setter calls. A remote attacker can supply a specially crafted PNG file to execute arbitrary code.
User interaction is required to open or process the crafted PNG file, and exploitation affects applications that free PNG data between png_read_info() and png_read_update_info().
4) Uncontrolled recursion (CVE-ID: CVE-2026-4224)
CWE-ID: CWE-674 - Uncontrolled Recursion
CVSSv4: 6.9 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N]
The vulnerability allows a remote attacker to perform a denial of service attack.
The vulnerability exists due to uncontrolled recursion in conv_content_model() when parsing document type definition containing a deeply nested content model. A remote attacker can pass specially crafted input to the application and perform a denial of service attack.
5) Allocation of Resources Without Limits or Throttling (CVE-ID: CVE-2026-42198)
CWE-ID: CWE-770 - Allocation of Resources Without Limits or Throttling
CVSSv4: 8.7 [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]
The vulnerability allows a remote attacker to cause a denial of service.
The vulnerability exists due to allocation of resources without limits or throttling in SCRAM-SHA-256 authentication handling when processing a server-supplied PBKDF2 iteration count. A remote attacker can send a specially crafted SCRAM server-first-message with a very large iteration count to cause a denial of service.
The issue is triggered only when the client uses SCRAM-SHA-256 authentication and reaches a malicious, compromised, or attacker-controlled PostgreSQL endpoint.
6) CRLF injection (CVE-ID: CVE-2026-0672)
CWE-ID: CWE-93 - Improper Neutralization of CRLF Sequences ('CRLF Injection')
CVSSv4: 5.1 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:L/VA:N/SC:N/SI:L/SA:N]
The vulnerability allows a remote attacker to inject arbitrary data in server response.
The vulnerability exists due to insufficient validation of attacker-supplied data when using http.cookies.Morsel. A remote attacker can pass specially crafted data to the application containing CR-LF characters and modify application behavior leading to a spoofing attack.
Remediation
Install update from vendor's website.