7.5
High
CVE-2026-42570 Svelte devalue is a JavaScript library that serializes values into strings when JSON.stringify isn't sufficient for…
Description
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 quirks in some JavaScript engines, be convinced to allocate much more memory than was needed when deserializing sparse arrays, leading to excessive memory consumption. This issue has been patched in version 5.8.1.
Affected products and versions
| Product | Affected versions | Fixed in |
|---|---|---|
| devalue 5.6 | 5.6.3 → < 5.8.1 | 5.8.1 |
| Red Hat Build of Podman Desktop | Versions not published | |
| Red Hat Trusted Artifact Signer | Versions not published | |
| Red Hat Trusted Artifact Signer 1.4 1783327185 | earliest → < 1783327185 | 1783327185 |
| Red Hat Enterprise Linux 10 | Versions not published |
Other CVEs of devalue
The 16 CVEs of devalue →
CVE-2026-123569
Devalue before 5.6.3 Denial of Service via Sparse Array Serialization
8.7
High
CVE-2026-123568
Sveltejs devalue before 5.6.3 Prototype Pollution via uneval Output
2.1
Low
CVE-2026-123566
Devalue before 5.9.3 CPU Amplification Denial of Service via uneval
8.7
High
CVE-2026-123567
Sveltejs devalue before 5.6.4 Prototype Injection via parse and unflatten
6.3
Medium