CVE-2026-34043

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Source
https://cve.org/CVERecord?id=CVE-2026-34043
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-34043.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2026-34043
Aliases
Downstream
Related
Published
2026-03-31T01:48:45.759Z
Modified
2026-04-06T15:44:21.670729Z
Severity
  • 5.9 (Medium) CVSS_V3 - CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H CVSS Calculator
Summary
Serialize JavaScript has CPU Exhaustion Denial of Service via crafted array-like objects
Details

Serialize JavaScript to a superset of JSON that includes regular expressions and functions. Prior to version 7.0.5, there 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. This issue has been patched in version 7.0.5.

Database specific 
{
    "cna_assigner": "GitHub_M",
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/34xxx/CVE-2026-34043.json",
    "cwe_ids": [
        "CWE-400",
        "CWE-834"
    ]
}
References

Affected packages

Git / github.com/yahoo/serialize-javascript

Affected ranges

Type
GIT
Repo
https://github.com/yahoo/serialize-javascript
Events
Introduced
0 Unknown introduced commit / All previous commits are affected
Fixed
df3f1c1fa9ca16b050ae893cb63ac23c91deed55
Database specific 
{
    "versions": [
        {
            "introduced": "0"
        },
        {
            "fixed": "7.0.5"
        }
    ]
}

Affected versions

v1.*
v1.0.0
v1.1.0
v1.1.1
v1.1.2
v1.2.0
v1.3.0
v1.4.0
v1.5.0
v1.6.0
v1.6.1
v1.7.0
v1.8.0
v1.9.0
v1.9.1
v2.*
v2.0.0
v2.1.0
v2.1.1
v2.1.2
v3.*
v3.0.0
v3.1.0
v4.*
v4.0.0
v5.*
v5.0.0
v5.0.1
v6.*
v6.0.0
v6.0.1
v6.0.2
v7.*
v7.0.0
v7.0.1
v7.0.2
v7.0.3
v7.0.4

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-34043.json"