CVE catalog
CVE-2026-42570
Svelte devalue is a JavaScript library that serializes values into strings when JSON.stringify isn't sufficient for the job. From version 5.6.3 to before version 5.8.1, devalue.parse could, due to qui
- Severity
- High · CVSS 7.5
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H - Published
- Source
- [NVD] · [CVE record]
- EPSS
- 0.40% · Oct 25, 2026
A flaw was found in devalue, a JavaScript library used for serializing values. Due to quirks in some JavaScript engines, the `devalue.parse` function could be exploited by a remote attacker when deserializing specially crafted sparse arrays. This could lead to excessive memory consumption, resulting in a Denial of Service (DoS) for the affected system. devalue: devalue: Excessive memory consumption via deserialization of sparse arrays This vulnerability is rated as Important. The `devalue` JavaScript library is susceptible to excessive memory consumption. Deserializing specially crafted sparse arrays can lead to resource exhaustion and a denial of service, impacting the availability of affected systems. The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.
Vulnerable and fixed packages
Distribution-reported package versions and fixes. These do not depend on matching against the OpenFactory package catalog.
| Distribution | Package | Release | Version | Status |
|---|---|---|---|---|
| Cpe | devalue | Not reported | 5.8.1 | fixed |
| Cpe | devalue | Not reported | 5.8.1 | fixed |
Fixed-version evidence
| Distribution | Package | Type | Release | Fixed version | Urgency | Origin | Bugs |
|---|---|---|---|---|---|---|---|
| Cpe | devalue | cpe | Not reported | 5.8.1 | Not reported | Not reported | Not reported |
| Cpe | devalue | cpe | Not reported | 5.8.1 | Not reported | NVD-CVE-2026-42570 | Not reported |
OpenFactory catalog packages
No matching packages in this catalog.
Observed: