CVE-2026-123567
Sveltejs devalue before 5.6.4 contains a prototype injection vulnerability that allows attackers to inject proto own properties into objects returned by devalue.parse and devalue.unflatten. Attackers can supply crafted serialized input that, when downstream code merges results via Object.assign, alters the target object's prototype.
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The sources do not list affected products or versions for this vulnerability yet.
0.2%14th percentile
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Published
First publication at the source
Collected
First seen by Baba Yaga Security