SB2026091024 - Multiple vulnerabilities in IBM Informix Dynamic Server
Published: September 10, 2026
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 2 vulnerabilities.
1) Server-Side Request Forgery (SSRF) (CVE-ID: CVE-2026-69192)
CWE-ID: CWE-918 - Server-Side Request Forgery (SSRF)
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 bypass network trust boundaries and perform server-side request forgery.
The vulnerability exists due to improper input validation in the Address4 parser when processing user-supplied IPv4 addresses with leading-zero octets. A remote attacker can supply a specially crafted address string to bypass network trust boundaries and perform server-side request forgery.
This issue occurs because the library interprets leading-zero octets as decimal while common URL parsers and resolvers interpret them as octal, causing security checks such as private-address and subnet classification to disagree with the destination actually reached by the network stack.
2) Input validation error (CVE-ID: CVE-2026-69198)
CWE-ID: CWE-20 - Improper input validation
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 bypass SSRF and trust-boundary checks.
The vulnerability exists due to improper input validation in the special-use classification methods built on isInSubnet when parsing an address string with a CIDR suffix. A remote attacker can supply a specially crafted address such as an internal address with a shorter CIDR suffix to bypass SSRF and trust-boundary checks.
Exploitation requires an application to accept a bare address string that may include a CIDR suffix and classify it before using the resulting address.
Remediation
Install update from vendor's website.