SB2026100104 - Multiple vulnerabilities in IBM DataPower Gateway
Published: October 1, 2026 Updated: October 1, 2026
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 11 vulnerabilities.
1) Inefficient Algorithmic Complexity (CVE-ID: CVE-2026-55968)
CWE-ID: CWE-407 - Inefficient Algorithmic Complexity
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 inefficient algorithmic complexity and allocation of resources without limits or throttling in Node.js server receive transports when processing input. A remote attacker can send specially crafted input to cause a denial of service.
2) Improper validation of certificate with host mismatch (CVE-ID: CVE-2026-48144)
CWE-ID: CWE-297 - Improper Validation of Certificate with Host Mismatch
CVSSv4: 6.9 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N]
The vulnerability allows a remote attacker to impersonate a trusted server.
The vulnerability exists due to improper validation of certificate with host mismatch in the c_glib TLS client when establishing TLS connections. A remote attacker can present a certificate for a different host to impersonate a trusted server.
3) Improper validation of certificate with host mismatch (CVE-ID: CVE-2026-48145)
CWE-ID: CWE-297 - Improper Validation of Certificate with Host Mismatch
CVSSv4: 6.9 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N]
The vulnerability allows a remote attacker to bypass hostname verification.
The vulnerability exists due to improper validation of certificate with host mismatch in the C++ TSSLSocket matchName() function when validating wildcard certificate names during TLS certificate verification. A remote attacker can present a crafted certificate with a mismatched hostname to bypass hostname verification.
4) Out-of-bounds read (CVE-ID: CVE-2026-55970)
CWE-ID: CWE-125 - Out-of-bounds read
CVSSv4: 6.9 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N]
The vulnerability allows a remote attacker to disclose sensitive information.
The vulnerability exists due to out-of-bounds read in THeaderTransport::readHeaderFormat() when parsing input. A remote attacker can send specially crafted input to disclose sensitive information.
5) Out-of-bounds read (CVE-ID: CVE-2026-58662)
CWE-ID: CWE-125 - Out-of-bounds read
CVSSv4: 6.9 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N]
The vulnerability allows a remote attacker to disclose sensitive information.
The vulnerability exists due to an out-of-bounds read in the C++ THeaderTransport::readString() function when parsing input. A remote attacker can send specially crafted input to disclose sensitive information.
6) Improper access control (CVE-ID: CVE-2026-43870)
CWE-ID: CWE-284 - Improper Access Control
CVSSv4: 6.9 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N]
The vulnerability allows a remote attacker to bypass origin validation.
The vulnerability exists due to improper access control in Node.js web_server.js when handling cross-origin requests. A remote attacker can send a specially crafted request to bypass origin validation.
7) Mismatched Memory Management Routines (CVE-ID: CVE-2025-48431)
CWE-ID: CWE-762 - Mismatched Memory Management Routines
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 mismatched memory management routines in c_glib language bindings when handling specially crafted requests. A remote attacker can send a specially crafted request to cause a denial of service.
The issue can terminate a c_glib-based Thrift server with a fatal "free(): invalid pointer" error.
8) Integer overflow (CVE-ID: CVE-2026-41602)
CWE-ID: CWE-190 - Integer overflow
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 integer overflow or wraparound in the TFramedTransport Go language implementation when parsing framed transport data. A remote attacker can send specially crafted framed input to cause a denial of service.
9) Uncontrolled Recursion (CVE-ID: CVE-2026-41606)
CWE-ID: CWE-674 - Uncontrolled Recursion
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 uncontrolled recursion in c_glib dispatch when processing crafted input. A remote attacker can send crafted input to cause a denial of service.
10) Out-of-bounds read (CVE-ID: CVE-2026-41607)
CWE-ID: CWE-125 - Out-of-bounds read
CVSSv4: 6.9 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N]
The vulnerability allows a remote attacker to disclose sensitive information.
The vulnerability exists due to out-of-bounds read in the C++ JSON parser when parsing input. A remote attacker can send specially crafted input to disclose sensitive information.
11) Uncontrolled Memory Allocation (CVE-ID: CVE-2026-43868)
CWE-ID: CWE-789 - Uncontrolled Memory Allocation
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 memory allocation with excessive size value in the Rust implementation when parsing input. A remote attacker can send specially crafted input to cause a denial of service.
Remediation
Install update from vendor's website.