CVE-2026-13149: high-severity vulnerability in juliangruber brace-expansion
Published · Updated
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21Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackcvss 7.7epss 0.4%
brace-expansion through 5.0.6 is vulnerable to denial of service. The expand() function exhibits exponential-time complexity in the number of consecutive non-expanding '{}' brace groups. An attacker who passes a crafted string to expand(), directly or transitively, can cause significant CPU consumption and event-loop blocking. The max option does not mitigate this, as it bounds the output size rather than the recursion work.
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:P/S:N/AU:Y/R:U/V:D/RE:M/U:Amber
Affected products
juliangruber · brace-expansionRelated CVEs — juliangruber brace-expansion
In the same product, most dangerous first.
CVE-2026-69152HIGHbrace-expansion: DoS via unbounded intermediate arrays, bypassing the CVE-2026-14257 mitigationEPSS 0.6%CVE-2026-14257HIGHbrace-expansion DoS via unbounded expansion length causing an out-of-memory process crashEPSS 0.6%CVE-2025-5889LOWjuliangruber brace-expansion index.js expand redosEPSS 0.6%CVE-2026-102278HIGHbrace-expansion: DoS via uncontrolled recursion on nested brace groups causing stack exhaustionEPSS 0.5%CVE-2026-102276HIGHbrace-expansion: DoS via uncontrolled recursion in parseCommaParts causing stack exhaustionEPSS 0.5%CVE-2026-33750MEDIUMbrace-expansion: Zero-step sequence causes process hang and memory exhaustionEPSS 0.4%