node-brace-expansion: The brace-expansion library generates arbitrary strings containing a common prefix and suffix
CVE-2026-45149 is fixed in node-brace-expansion on 1 platform by DEBIAN-CVE-2026-45149 (version 2.0.3+~1.1.2-3), released June 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. From 5.0.0 to before 5.0.6, the max option was being applied too late. When expanding a single large numeric range like {1..10000000}, the sequence generation loop generates all 10 million intermediate elements before the max limit is applied With max=10, the output is correctly limited to 10 items, but the process still allocates ~505 MB and spends ~800ms building the full intermediate array. This vulnerability is fixed in 5.0.6.
Where it's fixed
| Product | Fixed in | Fix | Released |
|---|---|---|---|
| Linux | |||
| node-brace-expansion · Debian 14 | 2.0.3+~1.1.2-3 | DEBIAN-CVE-2026-45149 | Jun 27, 2026 |
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