Vulnerability Instance
Lookup for vulnerabilities affecting packages.
GET /api/vulnerabilities/24544?format=api
{ "url": "http://public2.vulnerablecode.io/api/vulnerabilities/24544?format=api", "vulnerability_id": "VCID-vn8z-q24d-57bu", "summary": "Serialize JavaScript has CPU Exhaustion Denial of Service via crafted array-like objects\n### Impact\n\n**What kind of vulnerability is it?**\n\nIt 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.\n\n**Who is impacted?**\n\nApplications 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.\n\n### Patches\n\n**Has the problem been patched?**\n\nYes, the issue has been patched by replacing `instanceof Array` checks with `Array.isArray()` and using `Object.keys()` for sparse array detection.\n\n**What versions should users upgrade to?**\n\nUsers should upgrade to **`v7.0.5`** or later.\n\n### Workarounds\n\n**Is there a way for users to fix or remediate the vulnerability without upgrading?**\n\nThere is no direct code-level workaround within the library itself. However, users can mitigate the risk by:\n\n* Validating and sanitizing all input before passing it to the `serialize()` function.\n* Ensuring the environment is protected against Prototype Pollution.\n* Upgrading to **`v7.0.5`** as soon as possible.\n\n### Acknowledgements\n\nSerialize JavaScript thanks **Tomer Aberbach** (@TomerAberbach) for discovering and privately disclosing this issue.", "aliases": [ { "alias": "CVE-2026-34043" }, { "alias": "GHSA-qj8w-gfj5-8c6v" } ], "fixed_packages": [ { "url": "http://public2.vulnerablecode.io/api/packages/1026178?format=api", "purl": "pkg:deb/debian/node-serialize-javascript@7.0.5%2B~5.0.4-1", "is_vulnerable": false, "affected_by_vulnerabilities": [], "resource_url": "http://public2.vulnerablecode.io/packages/pkg:deb/debian/node-serialize-javascript@7.0.5%252B~5.0.4-1" }, { "url": "http://public2.vulnerablecode.io/api/packages/1000460?format=api", "purl": "pkg:deb/debian/node-serialize-javascript@7.0.5%2B~5.0.4-1?distro=trixie", 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"scoring_elements": "0.05003", "published_at": "2026-05-11T12:55:00Z" }, { "value": "0.00018", "scoring_system": "epss", "scoring_elements": "0.04997", "published_at": "2026-05-09T12:55:00Z" }, { "value": "0.00038", "scoring_system": "epss", "scoring_elements": "0.11348", "published_at": "2026-04-02T12:55:00Z" }, { "value": "0.0004", "scoring_system": "epss", "scoring_elements": "0.12185", "published_at": "2026-04-04T12:55:00Z" }, { "value": "0.00052", "scoring_system": "epss", "scoring_elements": "0.16305", "published_at": "2026-04-07T12:55:00Z" }, { "value": "0.00052", "scoring_system": "epss", "scoring_elements": "0.16392", "published_at": "2026-04-08T12:55:00Z" }, { "value": "0.00052", "scoring_system": "epss", "scoring_elements": "0.16451", "published_at": "2026-04-09T12:55:00Z" }, { "value": "0.00052", "scoring_system": "epss", "scoring_elements": "0.16436", "published_at": "2026-04-11T12:55:00Z" }, { "value": "0.00052", "scoring_system": "epss", "scoring_elements": "0.16396", "published_at": "2026-04-12T12:55:00Z" }, { "value": "0.00052", "scoring_system": "epss", "scoring_elements": "0.16334", "published_at": "2026-04-13T12:55:00Z" }, { "value": "0.00052", "scoring_system": "epss", "scoring_elements": "0.16271", "published_at": "2026-04-16T12:55:00Z" }, { "value": "0.00052", "scoring_system": "epss", "scoring_elements": "0.16291", "published_at": "2026-04-18T12:55:00Z" } ], "url": "https://api.first.org/data/v1/epss?cve=CVE-2026-34043" }, { "reference_url": "https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2026-34043", "reference_id": "", "reference_type": "", "scores": [], "url": "https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2026-34043" }, { "reference_url": "https://github.com/yahoo/serialize-javascript", "reference_id": "", "reference_type": "", "scores": [ { "value": "5.9", "scoring_system": "cvssv3.1", "scoring_elements": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H" }, { "value": "MODERATE", "scoring_system": "generic_textual", "scoring_elements": "" } ], "url": "https://github.com/yahoo/serialize-javascript" }, { "reference_url": "https://github.com/yahoo/serialize-javascript/commit/f147e90269b58bb6e539cfdf3d0e20d6ad14204b", "reference_id": "", "reference_type": "", "scores": [ { "value": "5.9", "scoring_system": "cvssv3.1", "scoring_elements": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H" }, { "value": "MODERATE", "scoring_system": "generic_textual", "scoring_elements": "" }, { "value": "Track", "scoring_system": "ssvc", "scoring_elements": "SSVCv2/E:N/A:N/T:P/P:M/B:A/M:M/D:T/2026-03-31T13:55:44Z/" } ], "url": "https://github.com/yahoo/serialize-javascript/commit/f147e90269b58bb6e539cfdf3d0e20d6ad14204b" }, { "reference_url": "https://github.com/yahoo/serialize-javascript/releases/tag/v7.0.5", "reference_id": "", "reference_type": "", "scores": [ { "value": "5.9", "scoring_system": "cvssv3.1", "scoring_elements": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H" }, { "value": "MODERATE", "scoring_system": "generic_textual", "scoring_elements": "" }, { "value": "Track", "scoring_system": "ssvc", "scoring_elements": "SSVCv2/E:N/A:N/T:P/P:M/B:A/M:M/D:T/2026-03-31T13:55:44Z/" } ], "url": "https://github.com/yahoo/serialize-javascript/releases/tag/v7.0.5" }, { "reference_url": "https://github.com/yahoo/serialize-javascript/security/advisories/GHSA-qj8w-gfj5-8c6v", "reference_id": "", "reference_type": "", "scores": [ { "value": "5.9", "scoring_system": "cvssv3.1", "scoring_elements": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H" }, { "value": "MODERATE", "scoring_system": "cvssv3.1_qr", "scoring_elements": "" }, { "value": "MODERATE", "scoring_system": "generic_textual", "scoring_elements": "" }, { "value": "Track", "scoring_system": "ssvc", "scoring_elements": "SSVCv2/E:N/A:N/T:P/P:M/B:A/M:M/D:T/2026-03-31T13:55:44Z/" } ], "url": "https://github.com/yahoo/serialize-javascript/security/advisories/GHSA-qj8w-gfj5-8c6v" }, { "reference_url": "https://nvd.nist.gov/vuln/detail/CVE-2026-34043", "reference_id": "", "reference_type": "", "scores": [ { "value": "5.9", "scoring_system": "cvssv3.1", "scoring_elements": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H" }, { "value": "MODERATE", "scoring_system": "generic_textual", "scoring_elements": "" } ], "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-34043" }, { "reference_url": "https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=1132605", "reference_id": "1132605", "reference_type": "", "scores": [], "url": "https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=1132605" }, { "reference_url": "https://bugzilla.redhat.com/show_bug.cgi?id=2453284", "reference_id": "2453284", "reference_type": "", "scores": [], "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2453284" }, { "reference_url": "https://github.com/advisories/GHSA-qj8w-gfj5-8c6v", "reference_id": "GHSA-qj8w-gfj5-8c6v", "reference_type": "", "scores": [ { "value": "MODERATE", "scoring_system": "cvssv3.1_qr", "scoring_elements": "" } ], "url": "https://github.com/advisories/GHSA-qj8w-gfj5-8c6v" } ], "weaknesses": [ { "cwe_id": 400, "name": "Uncontrolled Resource Consumption", "description": "The product does not properly control the allocation and maintenance of a limited resource, thereby enabling an actor to influence the amount of resources consumed, eventually leading to the exhaustion of available resources." }, { "cwe_id": 834, "name": "Excessive Iteration", "description": "The product performs an iteration or loop without sufficiently limiting the number of times that the loop is executed." }, { "cwe_id": 835, "name": "Loop with Unreachable Exit Condition ('Infinite Loop')", "description": "The product contains an iteration or loop with an exit condition that cannot be reached, i.e., an infinite loop." }, { "cwe_id": 937, "name": "OWASP Top Ten 2013 Category A9 - Using Components with Known Vulnerabilities", "description": "Weaknesses in this category are related to the A9 category in the OWASP Top Ten 2013." }, { "cwe_id": 1035, "name": "OWASP Top Ten 2017 Category A9 - Using Components with Known Vulnerabilities", "description": "Weaknesses in this category are related to the A9 category in the OWASP Top Ten 2017." } ], "exploits": [], "severity_range_score": "4.0 - 6.9", "exploitability": "0.5", "weighted_severity": "6.2", "risk_score": 3.1, "resource_url": "http://public2.vulnerablecode.io/vulnerabilities/VCID-vn8z-q24d-57bu" }