CVE-2026-30226

The CVE relates to the Svelte devalue JavaScript library. Affected versions are 5.6.3 and earlier, where devalue.parse and devalue.unflatten are vulnerable to prototype pollution via malicious payloads. Exploitation can cause Denial of Service (DoS) or type confusion. The issue is mitigated by up...

CVE-2026-30226 devalue has prototype pollution in devalue.parse and devalue.unflatten

Svelte devalue is a JavaScript library that serializes values into strings when JSON.stringify isn't sufficient for the job. In devalue v5.6.3 and earlier, devalue.parse and devalue.unflatten were susceptible to prototype pollution via maliciously crafted payloads. Successful exploitation could...

CVE-2026-30226

Svelte devalue is a JavaScript library that serializes values into strings when JSON.stringify isn't sufficient for the job. In devalue v5.6.3 and earlier, devalue.parse and devalue.unflatten were susceptible to prototype pollution via maliciously crafted payloads. Successful exploitation could...

CVE-2026-30226 devalue has prototype pollution in devalue.parse and devalue.unflatten

Svelte devalue is a JavaScript library that serializes values into strings when JSON.stringify isn't sufficient for the job. In devalue v5.6.3 and earlier, devalue.parse and devalue.unflatten were susceptible to prototype pollution via maliciously crafted payloads. Successful exploitation could...

CVE-2026-30226: Improperly Controlled Modification of Object Prototype Attributes

Svelte devalue is a JavaScript library that serializes values into strings when JSON.stringify isn't sufficient for the job. In devalue v5.6.3 and earlier, devalue.parse and devalue.unflatten were susceptible to prototype pollution via maliciously crafted payloads. Successful exploitation could...

PT-2026-24756

Svelte devalue is a JavaScript library that serializes values into strings when JSON.stringify isn't sufficient for the job. In devalue v5.6.3 and earlier, devalue.parse and devalue.unflatten were susceptible to prototype pollution via maliciously crafted payloads. Successful exploitation could...

devalue 安全漏洞

devalue is an enhanced JavaScript object serialization library developed by Svelte. Versions of devalue 5.6.3 and earlier contained a security vulnerability. This vulnerability stemmed from the susceptibility of devalue.parse and devalue.unflatten to prototype pollution attacks involving speciall...

Allocation of Resources Without Limits or Throttling

Overview devalue is a JSON.stringify, but handles cyclical references, repeated references, undefined, regular expressions, dates, Map and Set. Affected versions of this package are vulnerable to Allocation of Resources Without Limits or Throttling via the uneval or stringify functions. An attack...

@deno/sandbox (>=0.0.9, <=0.6.0), @ekairos/dataset (>=1.21.56-beta.0, <=1.22.22-beta.development.0) +51 more potentially affected by unknown CVE via devalue (>=5.0.0, <=5.6.2)

devalue NPM version =5.0.0, =0.0.9, =1.21.56-beta.0, =1.22.4-beta.development.0, =1.21.56-beta.0, =1.21.67-beta.0, =1.21.88-beta.0, =0.0.0-dev-20260121145510, =0.0.0-dev-20260115183047, =0.0.0-dev-20260115183047, =0.0.0-dev-20260115183047, =2.3.65, =1.1.27, =1.1.21, =1.2.263, =2.2.3, =4.0.1 and...

@deno/sandbox (>=0.0.9, <=0.6.0), @ekairos/dataset (>=1.21.56-beta.0, <=1.22.22-beta.development.0) +51 more potentially affected by unknown CVE via devalue (>=5.0.0, <=5.6.2)

devalue NPM version =5.0.0, =0.0.9, =1.21.56-beta.0, =1.22.4-beta.development.0, =1.21.56-beta.0, =1.21.67-beta.0, =1.21.88-beta.0, =0.0.0-dev-20260121145510, =0.0.0-dev-20260115183047, =0.0.0-dev-20260115183047, =0.0.0-dev-20260115183047, =2.3.65, =1.1.27, =1.1.21, =1.2.263, =2.2.3, =4.0.1 and...

Prototype Pollution

Overview devalue is a JSON.stringify, but handles cyclical references, repeated references, undefined, regular expressions, dates, Map and Set. Affected versions of this package are vulnerable to Prototype Pollution via the uneval method. An attacker can manipulate object prototypes by supplying...

@deno/sandbox (>=0.0.9, <=0.6.0), @ekairos/dataset (>=1.21.56-beta.0, <=1.22.22-beta.development.0) +51 more potentially affected by unknown CVE via devalue (>=5.0.0, <=5.6.2)

devalue NPM version =5.0.0, =0.0.9, =1.21.56-beta.0, =1.22.4-beta.development.0, =1.21.56-beta.0, =1.21.67-beta.0, =1.21.88-beta.0, =0.0.0-dev-20260121145510, =0.0.0-dev-20260115183047, =0.0.0-dev-20260115183047, =0.0.0-dev-20260115183047, =2.3.65, =1.1.27, =1.1.21, =1.2.263, =2.2.3, =4.0.1 and...

@deno/sandbox (>=0.0.9, <=0.6.0), @ekairos/dataset (>=1.21.56-beta.0, <=1.22.22-beta.development.0) +51 more potentially affected by unknown CVE via devalue (>=5.0.0, <=5.6.2)

devalue NPM version =5.0.0, =0.0.9, =1.21.56-beta.0, =1.22.4-beta.development.0, =1.21.56-beta.0, =1.21.67-beta.0, =1.21.88-beta.0, =0.0.0-dev-20260121145510, =0.0.0-dev-20260115183047, =0.0.0-dev-20260115183047, =0.0.0-dev-20260115183047, =2.3.65, =1.1.27, =1.1.21, =1.2.263, =2.2.3, =4.0.1 and...

Denial Of Service (DoS)

Svelte devalue is vulnerable to a Denial-Of-Service DoS. The vulnerability is due to missing input validation during typed array hydration, where devalue.parse assumes an ArrayBuffer input without verification, allowing crafted inputs to trigger excessive CPU or memory consumption when parsing...

Denial Of Service (DoS)

Devalue is vulnerable to a Denial-Of-Service DoS.The vulnerability is due to missing input validation during ArrayBuffer hydration, where devalue.parse assumes base64-encoded input without verification, allowing crafted data to trigger excessive CPU and memory consumption when parsing untrusted...

SUSE CVE-2026-22775

Svelte devalue is a JavaScript library that serializes values into strings when JSON.stringify isn't sufficient for the job. From 5.1.0 to 5.6.1, certain inputs can cause devalue.parse to consume excessive CPU time and/or memory, potentially leading to denial of service in systems that parse inpu...

CVE-2026-22775

A flaw was found in devalue, a JavaScript library used for serializing values. A remote attacker could exploit this vulnerability by providing specially crafted input to the devalue.parse function. This improper input validation, specifically during the ArrayBuffer hydration process, can cause th...

Asymmetric Resource Consumption (Amplification)

Overview devalue is a JSON.stringify, but handles cyclical references, repeated references, undefined, regular expressions, dates, Map and Set. Affected versions of this package are vulnerable to Asymmetric Resource Consumption Amplification due to the improper validation in ArrayBuffer if input...

@deno/sandbox (>=0.0.9, <=0.6.0), @ekairos/dataset (>=1.21.56-beta.0, <=1.22.22-beta.development.0) +51 more potentially affected by CVE-2026-22775 via devalue (>=5.1.1, <=5.6.0)

devalue NPM version =5.1.1, =0.0.9, =1.21.56-beta.0, =1.22.4-beta.development.0, =1.21.56-beta.0, =1.21.67-beta.0, =1.21.88-beta.0, =0.0.0-dev-20260121145510, =0.0.0-dev-20260115183047, =0.0.0-dev-20260115183047, =0.0.0-dev-20260115183047, =2.3.97, =1.1.53, =2.0.0, =1.2.263, =3.1.3, =4.0.1 and mo...

GHSA-G2PG-6438-JWPF devalue vulnerable to denial of service due to memory/CPU exhaustion in devalue.parse

Summary Certain inputs can cause devalue.parse to consume excessive CPU time and/or memory, potentially leading to denial of service in systems that parse input from untrusted sources. This affects applications using devalue.parse on externally-supplied data. The root cause is the ArrayBuffer...