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CVE-2026-102276

brace-expansion: DoS via uncontrolled recursion in parseCommaParts causing stack exhaustion

CVSS 3.1 7.5 HIGHCheck source for fixed versionsKEV status unknown

Original advisory

Historical advisory recorded 23 Oct 2026 15:48:27 UTC. Read the latest advisory.

cve-program · CVE-2026-102276

Published

The brace-expansion library generates arbitrary strings containing a common prefix and suffix. Prior to 1.1.19, 2.1.5, 3.0.7, and 5.0.10, crafted brace patterns can exhaust the native stack in parseCommaParts because parseCommaParts recursively processes the remainder once per brace group and uses push.apply to pass every element of a very large comma-part array as a function argument. Patterns containing many comma-separated brace groups trigger the recursive path, while the large array triggers the argument-array path without deep recursion. These paths cause recursive and argument-array native stack exhaustion before max or maxLength can limit output, potentially terminating the Node.js process in a process-terminating denial of service. This issue is fixed in versions 1.1.19, 2.1.5, 3.0.7, and 5.0.10.

Read the publisher's advisory

Affected versions, risk and source history

cve-program · CVE-2026-102276

Published

brace-expansion

Vendor product

Publisher's version information

Shown as published. These rules are not interpreted as NuGet package version ranges.

{
                    "vendor": "juliangruber",
                    "product": "brace-expansion",
                    "versions": [
                        {
                            "version": ">= 4.0.0, < 5.0.10",
                            "status": "affected"
                        },
                        {
                            "version": ">= 3.0.0, < 3.0.7",
                            "status": "affected"
                        },
                        {
                            "version": ">= 2.0.0, < 2.1.5",
                            "status": "affected"
                        },
                        {
                            "version": "< 1.1.19",
                            "status": "affected"
                        }
                    ]
                }

Original source record · Cite this exact observation · Complete original publisher JSON