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| purl | pkg:npm/serialize-javascript@7.0.4 |
| Vulnerability | Summary | Fixed by |
|---|---|---|
|
VCID-vn8z-q24d-57bu
Aliases: CVE-2026-34043 GHSA-qj8w-gfj5-8c6v |
Serialize JavaScript has CPU Exhaustion Denial of Service via crafted array-like objects ### Impact **What kind of vulnerability is it?** It is a **Denial of Service (DoS)** vulnerability caused by CPU exhaustion. When serializing a specially crafted "array-like" object (an object that inherits from `Array.prototype` but has a very large `length` property), the process enters an intensive loop that consumes 100% CPU and hangs indefinitely. **Who is impacted?** Applications that use `serialize-javascript` to serialize untrusted or user-controlled objects are at risk. While direct exploitation is difficult, it becomes a high-priority threat if the application is also vulnerable to **Prototype Pollution** or handles untrusted data via **YAML Deserialization**, as these could be used to inject the malicious object. ### Patches **Has the problem been patched?** Yes, the issue has been patched by replacing `instanceof Array` checks with `Array.isArray()` and using `Object.keys()` for sparse array detection. **What versions should users upgrade to?** Users should upgrade to **`v7.0.5`** or later. ### Workarounds **Is there a way for users to fix or remediate the vulnerability without upgrading?** There is no direct code-level workaround within the library itself. However, users can mitigate the risk by: * Validating and sanitizing all input before passing it to the `serialize()` function. * Ensuring the environment is protected against Prototype Pollution. * Upgrading to **`v7.0.5`** as soon as possible. ### Acknowledgements Serialize JavaScript thanks **Tomer Aberbach** (@TomerAberbach) for discovering and privately disclosing this issue. |
Affected by 0 other vulnerabilities. |
| Vulnerability | Summary | Aliases |
|---|---|---|
| This package is not known to fix vulnerabilities. | ||
| Date | Actor | Action | Vulnerability | Source | VulnerableCode Version |
|---|---|---|---|---|---|
| 2026-05-06T16:41:22.333477+00:00 | GitLab Importer | Affected by | VCID-vn8z-q24d-57bu | https://gitlab.com/gitlab-org/advisories-community/-/blob/main/npm/serialize-javascript/CVE-2026-34043.yml | 38.6.0 |
| 2026-04-29T23:35:19.109144+00:00 | GitLab Importer | Affected by | VCID-vn8z-q24d-57bu | https://gitlab.com/gitlab-org/advisories-community/-/blob/main/npm/serialize-javascript/CVE-2026-34043.yml | 38.5.0 |