devalue: Residual sparse-array CPU amplification in uneval
Priority LOW 38CWE-400Published · Updated
Key facts
- Attack vector
- —
- Privileges required
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- User interaction
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- Attack complexity
- —
- Impact type
- Denial of service
- Confidentiality · integrity · availability
- —
- Fix status
- Fixed
No CVSS vector from any source. Fix status from GitHub. Impact type from CWE-400.
Summary
`uneval` performs synchronous work proportional to a sparse array's declared length. An application that passes attacker-influenced sparse values to `uneval` can suffer event-loop blocking. Since attacker-controlled creation of sparse arrays is so difficult, this vulnerability is very difficult to exploit.
Why it matters now
Fix Fixed devalue (npm): 5.9.3
SSVC decision points
Not available: CISA has not published SSVC decision points for this record.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| — | devalue (npm) | before 5.9.3 | 5.9.3 | Patch available | GHSA-hx4r-w6wj-j8fg |
- devalue (npm) Vendor— Affected before 5.9.3 Fixed in 5.9.3 Patch available GHSA-hx4r-w6wj-j8fg
Remediation
- Fix · GHSA-hx4r-w6wj-j8fg devalue (npm) Fixed in 5.9.3 Advisory →
Timeline
- 2026-10-03 Threatist record created from GHSA-hx4r-w6wj-j8fg
References
Sources
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences