SB20261111140 - Multiple vulnerabilities in IBM Db2 Developer Extension
Published: November 11, 2026
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 3 vulnerabilities.
1) Uncontrolled Recursion (CVE-ID: CVE-2026-102276)
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 by crashing applications that process untrusted brace-expansion patterns.
The vulnerability exists due to uncontrolled recursion and unbounded push.apply argument lists in brace-expansion's parseCommaParts() when parsing untrusted patterns. A remote attacker can supply expand('{' + '{a},'.repeat(7000) + 'b}') or expand('{{x},' + 'a,'.repeat(125000) + 'b}') to exhaust the stack and terminate applications that do not catch the resulting RangeError.
2) Inefficient Algorithmic Complexity (CVE-ID: CVE-2026-102277)
CWE-ID: CWE-407 - Inefficient Algorithmic Complexity
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 cause temporary denial of service through excessive CPU consumption and memory pressure.
The vulnerability exists due to inefficient algorithmic complexity in the brace-expansion parser when processing {a},b}-shaped patterns, as each rewrite rescans an expanding string. A remote attacker can supply patterns constructed as '{a}' + '}'.repeat(n) + ',z}' to expand(), directly or through minimatch or glob, to trigger quadratic processing time and block the application's event loop.
3) Uncontrolled Recursion (CVE-ID: CVE-2026-102278)
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 by crashing applications using brace-expansion.
The vulnerability exists due to uncontrolled recursion in brace-expansion's expand_() function when expanding nested comma alternatives or single-part brace sets. A remote attacker can supply strings generated by '{a,'.repeat(4000) + 'z' + '}'.repeat(4000) or '{'.repeat(3200) + 'a,b' + '}'.repeat(3200) to expand(), directly or through user-supplied minimatch/glob patterns, to exhaust the stack and terminate the process if the resulting exception is uncaught.
Remediation
Install update from vendor's website.