{"id":"CVE-2026-33750","revision":"58a18b5095fb48ac9f784083eb5097bf","records":[{"revision":"58a18b5095fb48ac9f784083eb5097bf","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2026-33750","aliases":[],"title":"brace-expansion: Zero-step sequence causes process hang and memory exhaustion","description":"The brace-expansion library generates arbitrary strings containing a common prefix and suffix. Prior to versions 5.0.5, 3.0.2, 2.0.3, and 1.1.13, a brace pattern with a zero step value (e.g., `{1..2..0}`) causes the sequence generation loop to run indefinitely, making the process hang for seconds and allocate heaps of memory. Versions 5.0.5, 3.0.2, 2.0.3, and 1.1.13 fix the issue. As a workaround, sanitize strings passed to `expand()` to ensure a step value of `0` is not used.","state":0,"publishedAt":"2026-03-27T14:04:52.297+00:00","modifiedAt":"2026-03-27T14:48:06.779+00:00","affected":[{"ecosystem":"Vendor product","name":"brace-expansion","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"vendor\": \"juliangruber\",\n                    \"product\": \"brace-expansion\",\n                    \"versions\": [\n                        {\n                            \"version\": \">= 4.0.0, < 5.0.5\",\n                            \"status\": \"affected\"\n                        },\n                        {\n                            \"version\": \">= 3.0.0, < 3.0.2\",\n                            \"status\": \"affected\"\n                        },\n                        {\n                            \"version\": \">= 2.0.0, < 2.0.3\",\n                            \"status\": \"affected\"\n                        },\n                        {\n                            \"version\": \"< 1.1.13\",\n                            \"status\": \"affected\"\n                        }\n                    ]\n                }"}],"metrics":[{"system":"CVSS 3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H","score":6.5,"severity":"MEDIUM"}],"references":["https://github.com/juliangruber/brace-expansion/security/advisories/GHSA-f886-m6hf-6m8v","https://github.com/juliangruber/brace-expansion/issues/98","https://github.com/juliangruber/brace-expansion/pull/95","https://github.com/juliangruber/brace-expansion/pull/96","https://github.com/juliangruber/brace-expansion/pull/97","https://github.com/juliangruber/brace-expansion/commit/311ac0d54994158c0a384e286a7d6cbb17ee8ed5","https://github.com/juliangruber/brace-expansion/commit/7fd684f89fdde3549563d0a6522226a9189472a2","https://github.com/juliangruber/brace-expansion/commit/b9cacd9e55e7a1fa588fe4b7bb1159d52f1d902a","https://github.com/juliangruber/brace-expansion/blob/daa71bcb4a30a2df9bcb7f7b8daaf2ab30e5794a/src/index.ts#L107-L113","https://github.com/juliangruber/brace-expansion/blob/daa71bcb4a30a2df9bcb7f7b8daaf2ab30e5794a/src/index.ts#L184"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-33750","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-33750","identifiers":["CVE-2026-33750"]},"retained":false,"historicalAffected":[]}],"coverage":[]}