CVE-2026-69152: CWE-400: Uncontrolled Resource Consumption in juliangruber brace-expansion
The brace-expansion library generates arbitrary strings containing a common prefix and suffix. Prior to 1.1.18, 2.1.4, 3.0.6, and 5.0.9, expand() does not apply maxLength while constructing comma-alternative intermediate arrays or padded sequences, allowing attacker-controlled input to exhaust memory or block the event loop. The fix for CVE-2026-14257 is bypassed by the vulnerability. This issue is fixed in versions 1.1.18, 2.1.4, 3.0.6, and 5.0.9.
AI Analysis
Technical Summary
CVE-2026-69152 affects the juliangruber brace-expansion library where the expand() function fails to apply the maxLength constraint during the construction of comma-alternative intermediate arrays or padded sequences. This flaw allows an attacker to supply crafted input that can cause excessive memory consumption or event loop blocking, leading to denial of service conditions. The vulnerability bypasses the fix implemented for CVE-2026-14257. The issue is resolved in brace-expansion versions 1.1.18, 2.1.4, 3.0.6, and 5.0.9.
Potential Impact
An attacker can exploit this vulnerability to cause uncontrolled resource consumption, resulting in memory exhaustion or blocking the event loop. This leads to denial of service (DoS) conditions in applications using vulnerable versions of the brace-expansion library. There is no impact on confidentiality or integrity reported.
Mitigation Recommendations
This vulnerability is fixed in brace-expansion versions 1.1.18, 2.1.4, 3.0.6, and 5.0.9. Users should upgrade to one of these versions or later to remediate the issue. Patch status is not explicitly confirmed by a vendor advisory but the description states these versions contain the fix. Until upgraded, applications remain vulnerable.
CVE-2026-69152: CWE-400: Uncontrolled Resource Consumption in juliangruber brace-expansion
Description
The brace-expansion library generates arbitrary strings containing a common prefix and suffix. Prior to 1.1.18, 2.1.4, 3.0.6, and 5.0.9, expand() does not apply maxLength while constructing comma-alternative intermediate arrays or padded sequences, allowing attacker-controlled input to exhaust memory or block the event loop. The fix for CVE-2026-14257 is bypassed by the vulnerability. This issue is fixed in versions 1.1.18, 2.1.4, 3.0.6, and 5.0.9.
CVSS v3.1
Score 7.5high
Affected software
juliangruber
brace-expansion
pkg:npm/brace-expansionRun on your own infrastructure? Check whether these packages are installed with threat-finder — our free open-source scanner.
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
CVE-2026-69152 affects the juliangruber brace-expansion library where the expand() function fails to apply the maxLength constraint during the construction of comma-alternative intermediate arrays or padded sequences. This flaw allows an attacker to supply crafted input that can cause excessive memory consumption or event loop blocking, leading to denial of service conditions. The vulnerability bypasses the fix implemented for CVE-2026-14257. The issue is resolved in brace-expansion versions 1.1.18, 2.1.4, 3.0.6, and 5.0.9.
Potential Impact
An attacker can exploit this vulnerability to cause uncontrolled resource consumption, resulting in memory exhaustion or blocking the event loop. This leads to denial of service (DoS) conditions in applications using vulnerable versions of the brace-expansion library. There is no impact on confidentiality or integrity reported.
Mitigation Recommendations
This vulnerability is fixed in brace-expansion versions 1.1.18, 2.1.4, 3.0.6, and 5.0.9. Users should upgrade to one of these versions or later to remediate the issue. Patch status is not explicitly confirmed by a vendor advisory but the description states these versions contain the fix. Until upgraded, applications remain vulnerable.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- GitHub_M
- Date Reserved
- 2026-08-03T15:47:09.654Z
- Cvss Version
- 3.1
- State
- PUBLISHED
Threat ID: 6a70cd6fbf32cb7a34ebce94
Added to database: 08/03/2026, 17:18:39 UTC
Last enriched: 08/03/2026, 17:32:55 UTC
Last updated: 09/17/2026, 22:01:37 UTC
Views: 65
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