Vulnerability in Sveltejs Devalue
CVE-2026-22774
Svelte devalue is a JavaScript library that serializes values into strings when JSON.stringify isn't sufficient for the job. From 5.3.0 to 5.6.1, certain inputs can cause devalue.parse to consume excessive CPU time and/or memory, potential…
EPSS: 0.000 (12.0th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.
Affected products
- Sveltejs Devalue — versions >= 5.3.0, < 5.6.2
Weakness classification (CWE)
References
- https://github.com/sveltejs/devalue/security/advisories/GHSA-vw5p-8cq8-m7mv (x_refsource_CONFIRM)
- https://github.com/sveltejs/devalue/commit/e46afa64dd2b25aa35fb905ba5d20cea63aabbf7 (x_refsource_MISC)
- https://github.com/sveltejs/devalue/releases/tag/v5.6.2 (x_refsource_MISC)
Frequently asked questions
- What is CVE-2026-22774?
- CVE-2026-22774 is a high-severity vulnerability in Sveltejs Devalue, classified under Asymmetric Resource Consumption (Amplification). CVSS score: 7.5/10. Published 2026-01-15.
- How severe is CVE-2026-22774?
- High severity. CVSS v3 base score is 7.5 out of 10.