CVE-2026-102992

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Source
https://cve.org/CVERecord?id=CVE-2026-102992
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-102992.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2026-102992
Aliases
Downstream
CGA (19)
CLSA (2)
ECHO (1)
MINI (5)
Published
2026-09-30T19:50:18Z
Modified
2026-10-02T03:47:25Z
Severity
  • 9.2 (Critical) CVSS_V4 - CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N CVSS Calculator
Summary
piscina: Prototype-pollution gadget in ThreadPool.options allows RCE via execArgv / loadBalancer / env
Details

piscina is a node.js worker pool implementation. Prior to 4.9.4, 5.3.2, and 6.0.0-rc.5, Piscina stores ThreadPool.options in src/index.ts as a plain object that inherits from Object.prototype. Applications with a separate prototype-pollution primitive can therefore supply inherited values for security-sensitive options that do not have own defaults. An inherited execArgv value is passed to the Node.js Worker constructor and can preload attacker-controlled code in worker threads, an inherited loadBalancer function can execute during task scheduling, and inherited env values can alter worker environments. This issue is fixed in versions 4.9.4, 5.3.2, and 6.0.0-rc.5.

Database specific 
{
    "cna_assigner":  "GitHub_M",
    "cwe_ids":  [
        "CWE-1321"
    ],
    "osv_generated_from":  "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/102xxx/CVE-2026-102992.json",
    "unresolved_ranges":  [
        {
            "extracted_events":  [
                {
                    "introduced":  "5.0.0"
                },
                {
                    "fixed":  "5.3.2"
                },
                {
                    "introduced":  "6.0.0-rc.1"
                },
                {
                    "fixed":  "6.0.0-rc.5"
                }
            ],
            "source":  "AFFECTED_FIELD"
        }
    ]
}
References

Affected packages

Git / github.com/piscinajs/piscina

Affected ranges

Type
GIT
Repo
https://github.com/piscinajs/piscina
Events
Introduced
0 Unknown introduced commit / All previous commits are affected
Fixed
0cb12fca37f526065b072592afe954574dcc656f
Fixed
2f69f67159a0e48b38fd61fa4a91c2fdc19fff72
Fixed
5be7bbb19e3787bb698862cd516121a578d690f7
Fixed
bebbda255c2981cecddd36b171b94be2fd41c9a6
Fixed
016f84d4f0cf2f94c16652d491d644d3ce03f275
Database specific
Show details 
{
    "extracted_events":  [
        {
            "introduced":  "0"
        },
        {
            "fixed":  "4.9.4"
        }
    ],
    "source":  [
        "AFFECTED_FIELD",
        "REFERENCES"
    ]
}

Affected versions

v.*
v.4.9.0
v1.*
v1.0.0
v1.1.0
v1.2.0
v1.2.1
v1.3.0
v1.4.0
v1.5.0
v1.5.1
v1.6.0
v1.6.1
v1.6.2
v1.6.3
v2.*
v2.0.0
v2.1.0
v2.2.0
v3.*
v3.0.0
v3.1.0
v3.2.0
v4.*
v4.0.0
v4.1.0
v4.2.0
v4.2.1
v4.3.0
v4.3.1
v4.3.2
v4.4.0
v4.5.0
v4.5.1
v4.5.2
v4.6.0
v4.6.1
v4.7.0
v4.8.0
v4.9.1
v4.9.2
v4.9.3
v5.*
v5.0.0
v5.0.0-alpha.0
v5.0.0-alpha.1
v5.0.0-alpha.2
v5.1.0
v5.1.1
v5.1.2
v5.1.3
v5.1.4
v5.2.0
v5.3.0
v5.3.1
v6.*
v6.0.0-rc.0
v6.0.0-rc.2
v6.0.0-rc.3
v6.0.0-rc.4

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-102992.json"