LiquidJS: memoryLimit Bypass through Negative Range Values Leads to Process Crash
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Denial of service
- Confidentiality · integrity · availability
- None · None · High
- Fix status
- Fixed
Attack profile from CVSS 3.1 · CNA. Fix status from CNA and GitHub. Impact type from CWE-400.
Summary
LiquidJS is a Shopify / GitHub Pages compatible template engine in pure JavaScript. Prior to version 10.25.1, LiquidJS's `memoryLimit` security mechanism can be completely bypassed by using reverse range expressions (e.g., `(100000000..1)`), allowing an attacker to allocate unlimited memory. Combined with a string flattening operation (e.g., `replace` filter), this causes a V8 Fatal error that crashes the Node.js process, resulting in complete denial of service from a single HTTP request. Version 10.25.1 patches the issue.
Why it matters now
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- Poc
- Automatable
- Yes
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| harttle | liquidjs | before 10.25.1 | 10.25.1 | Patch available | CNA |
| — | liquidjs (npm) | up to 10.24.0 | — | No fix listed | GHSA-9r5m-9576-7f6x |
- liquidjs Vendorharttle Affected before 10.25.1 Fixed in 10.25.1 Patch available CNA
- liquidjs (npm) Vendor— Affected up to 10.24.0 Fixed in — No fix listed GHSA-9r5m-9576-7f6x
Remediation
- Fix · CNA liquidjs (harttle) Fixed in 10.25.1
Timeline
- 2026-10-02 Threatist record created from CVE-2026-33285
- 2026-10-03 Alias added: GHSA-9r5m-9576-7f6x
References
More harttle Liquidjs vulnerabilities
- TI-2026-29912 LiquidJS is vulnerable to Denial of Service via circular block reference in layout CVSS 3.1HIGH 7.5
- TI-2026-28394 Information disclosure in harttle liquidjs CVSS 3.1HIGH 7.5
- TI-2026-25698 LiquidJS has Exponential Memory Amplification through its replace_first Filter $& Pattern CVSS 3.1HIGH 7.5
- TI-2026-27640 LiquidJS has a root restriction bypass for partial and layout loading through symlinked templates CVSS 4.0HIGH 8.2
- TI-2022-09484 Information exposure in liquidjs CVSS 3.1MEDIUM 5.3
- TI-2026-26466 LiquidJS has a Memory Limit Bypass via Quadratic Amplification in `replace` Filter CVSS 3.1MEDIUM 5.3
Sources
- CVE-2026-33285 · CVE Program
- CVE-2026-33285 · NVD
- FIRST EPSS
- GHSA-9r5m-9576-7f6x · GitHub Advisory Database · CC BY 4.0
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