Withdrawn by the publisher.

Affected: CleanStart: mongosh

Multiple security vulnerabilities affect the mongosh package. These issues are resolved in later releases. See references for individual vulnerability details.

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.

Affected: npm: brace-expansion

### Impact

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.

The loop in question:

https://github.com/juliangruber/brace-expansion/blob/daa71bcb4a30a2df9bcb7f7b8daaf2ab30e5794a/src/index.ts#L184

`test()` is one of

https://github.com/juliangruber/brace-expansion/blob/daa71bcb4a30a2df9bcb7f7b8daaf2ab30e5794a/src/index.ts#L107-L113

The increment is computed as `Math.abs(0) = 0`, so the loop variable never advances. On a test machine, the process hangs for about 3.5 seconds and allocates roughly 1.9 GB of memory before throwing a `RangeError`. Setting max to any value has no effect because the limit is only checked at the output combination step, not during sequence generation.

This affects any application that passes untrusted strings to expand(), or by error sets a step value of `0`. That includes tools built on minimatch/glob that resolve patterns from CLI arguments or config files. The input needed is just 10 bytes.

### Patches

Upgrade to versions - 5.0.5+

A step increment of 0 is now sanitized to 1, which matches bash behavior.

### Workarounds

Sanitize strings passed to `expand()` to ensure a step value of `0` is not used.

Affected: openEuler:20.03-LTS-SP4: nodejs-brace-expansion, openEuler:22.03-LTS-SP4: nodejs-brace-expansion, openEuler:24.03-LTS: nodejs-brace-expansion, openEuler:24.03-LTS-SP1: nodejs-brace-expansion, openEuler:24.03-LTS-SP2: nodejs-brace-expansion, openEuler:24.03-LTS-SP3: nodejs-brace-expansion

Brace expansion as known from sh/bash Security Fix(es):

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.(CVE-2026-33750)

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Affected: Ubuntu:18.04:LTS: node-brace-expansion, Ubuntu:20.04:LTS: node-brace-expansion, Ubuntu:22.04:LTS: node-brace-expansion, Ubuntu:24.04:LTS: node-brace-expansion, Ubuntu:25.10: node-brace-expansion, Ubuntu:26.04:LTS: node-brace-expansion

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.

Ein Angreifer kann mehrere Schwachstellen in Atlassian Bamboo, Atlassian Bitbucket, Atlassian Confluence, Atlassian Crucible, Atlassian Fisheye und Atlassian Jira ausnutzen, um beliebigen Programmcode auszuführen, um einen Denial of Service Angriff durchzuführen, um Informationen offenzulegen, um einen Cross-Site Scripting Angriff durchzuführen, und um Sicherheitsvorkehrungen zu umgehen.