CVE-2026-33750 | juliangruber brace-expansion up to 1.1.12/2.0.2/3.0.1/5.0.4 expand step resource consumption

VDB-353932 · CVE-2026-33750 · GCVE-0-2026-33750 JULIANGRUBER BRACE-EXPANSION UP TO 1.1.12/2.0.2/3.0.1/5.0.4 EXPAND STEP RESOURCE CONSUMPTION HISTORYDIFFRELATEJSONXMLCTI CVSS Meta Temp Score Current Exploit Price (≈) CTI Interest Score 5.3 $0-$5k 1.63+ Summaryinfo A vulnerability described as problematic has been identified in juliangruber brace-expansion up to 1.1.12/2.0.2/3.0.1/5.0.4. The impacted element is the function expand. Executing a manipulation of the argument step can lead to resource consumption. This vulnerability is tracked as CVE-2026-33750. The attack can be launched remotely. No exploit exists. Upgrading the affected component is recommended. Detailsinfo A vulnerability was found in juliangruber brace-expansion up to 1.1.12/2.0.2/3.0.1/5.0.4. It has been declared as problematic. This vulnerability affects the function expand. The manipulation of the argument step with an unknown input leads to a resource consumption vulnerability. The CWE definition for the vulnerability is CWE-400. The product does not properly control the allocation and maintenance of a limited resource, thereby enabling an actor to influence the amount of resources consumed, eventually leading to the exhaustion of available resources. As an impact it is known to affect availability. CVE summarizes: 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. The advisory is shared for download at github.com. This vulnerability was named CVE-2026-33750 since 03/23/2026. The exploitation appears to be easy. The attack can be initiated remotely. No form of authentication is required for a successful exploitation. Successful exploitation requires user interaction by the victim. There are known technical details, but no exploit is available. The MITRE ATT&CK project declares the attack technique as T1499. Upgrading to version 1.1.13, 2.0.3, 3.0.2 or 5.0.5 eliminates this vulnerability. Productinfo Vendor juliangruber Name brace-expansion Version 1.1.0 1.1.1 1.1.2 1.1.3 1.1.4 1.1.5 1.1.6 1.1.7 1.1.8 1.1.9 1.1.10 1.1.11 1.1.12 2.0.0 2.0.1 2.0.2 3.0.0 3.0.1 5.0.0 5.0.1 5.0.2 5.0.3 5.0.4 Website Product: https://github.com/juliangruber/brace-expansion/ CPE 2.3info 🔒 🔒 🔒 CPE 2.2info 🔒 🔒 🔒 CVSSv4info VulDB Vector: 🔒 VulDB Reliability: 🔍 CVSSv3info VulDB Meta Base Score: 5.4 VulDB Meta Temp Score: 5.3 VulDB Base Score: 4.3 VulDB Temp Score: 4.1 VulDB Vector: 🔒 VulDB Reliability: 🔍 CNA Base Score: 6.5 CNA Vector (GitHub_M): 🔒 CVSSv2info Vector Complexity Authentication Confidentiality Integrity Availability Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock VulDB Base Score: 🔒 VulDB Temp Score: 🔒 VulDB Reliability: 🔍 Exploitinginfo Class: Resource consumption CWE: CWE-400 / CWE-404 CAPEC: 🔒 ATT&CK: 🔒 Physical: No Local: No Remote: Yes Availability: 🔒 Status: Not defined Price Prediction: 🔍 Current Price Estimation: 🔒 0-Day Unlock Unlock Unlock Unlock Today Unlock Unlock Unlock Unlock Threat Intelligenceinfo Interest: 🔍 Active Actors: 🔍 Active APT Groups: 🔍 Countermeasuresinfo Recommended: Upgrade Status: 🔍 0-Day Time: 🔒 Upgrade: brace-expansion 1.1.13/2.0.3/3.0.2/5.0.5 Timelineinfo 03/23/2026 CVE reserved 03/27/2026 +4 days Advisory disclosed 03/27/2026 +0 days VulDB entry created 03/27/2026 +0 days VulDB entry last update Sourcesinfo Product: github.com Advisory: github.com Status: Confirmed CVE: CVE-2026-33750 (🔒) GCVE (CVE): GCVE-0-2026-33750 GCVE (VulDB): GCVE-100-353932 Entryinfo Created: 03/27/2026 15:49 Changes: 03/27/2026 15:49 (65) Complete: 🔍 Cache ID: 99:EB6:101 Discussion No comments yet. Languages: en. Please log in to comment. ◂ PreviousOverviewNext ▸