brace-expansion: Large numeric range defeats documented `max` DoS protection
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. ### Workaround Ensure the string to be expanded doesn't contain more values than the desired `max` item count.
describes (1)
Related CVEs.
| ID | severity | exploitable | ||
|---|---|---|---|---|
| CVE-2026-45149US | high7.5 | — | ||
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… | ||||
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