brace-expansion: Zero-step sequence causes process hang and memory exhaustion
CVE-2026-33750 is fixed in node-brace-expansion on 1 platform by DEBIAN-CVE-2026-33750 (version 2.0.3+~1.1.2-1), released March 27, 2026. It is not reported as exploited. Patch Radar priority: High.
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.
Where it's fixed
| Product | Fixed in | Fix | Released |
|---|---|---|---|
| Linux | |||
| node-brace-expansion · Debian 14 | 2.0.3+~1.1.2-1 | DEBIAN-CVE-2026-33750 | Mar 27, 2026 |
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