Uncontrolled memory allocation in js-beautify
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Attack requirements
- None
- Impact type
- Denial of service
- Confidentiality · integrity · availability
- None · None · Low
- Fix status
- No fix listed
Attack profile from CVSS 4.0 · CNA. Fix status from CNA. Impact type from CWE-400.
Summary
js-beautify versions up to and including 1.15.1 and 2.0.3 allow uncontrolled memory allocation (CWE-789) when a crafted input is processed by an unidentified function. A remote attacker without privileges or user interaction can trigger it, with a low impact on availability.
Written with Claude Haiku 5.5 from the sources below · 2026-10-27
Description from the CNA
A weakness has been identified in beautifier js-beautify up to 1.15.1/2.0.3. The affected element is an unknown function. Executing a manipulation can lead to uncontrolled memory allocation. The attack may be launched remotely. The vendor was contacted early about this disclosure but did not respond in any way.
Why it matters now
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- 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 |
|---|---|---|---|---|---|
| beautifier | js-beautify | 1.15.0; 1.15.1; 2.0.0; 2.0.1; 2.0.2; 2.0.3 | — | No fix listed | CNA |
- js-beautify Vendorbeautifier Affected 1.15.0; 1.15.1; 2.0.0; 2.0.1; 2.0.2; 2.0.3 Fixed in — No fix listed CNA
CPE names CNA · 1
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:beautifier:js-beautify:*:*:*:*:*:*:*:* | — | — | beautifier |
- cpe:2.3:a:beautifier:js-beautify:*:*:*:*:*:*:*:* Versions — — ·beautifier
Remediation
The sources list no fixed version for js-beautify.
Written with Claude Haiku 5.5 from the sources below · 2026-10-27
Timeline
- 2026-10-13 Threatist record created from CVE-2026-109149
- 2026-10-13 Alias added: GHSA-jgqr-xggw-6823
- 2026-10-14 Priority changed: MEDIUM → LOW
- 2026-10-18 CISA SSVC decision points changed
References
Sources
- CVE-2026-109149 · CVE Program
- CVE-2026-109149 · NVD
- FIRST EPSS
- GHSA-jgqr-xggw-6823 · GitHub Advisory Database · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences