Is there a public exploit for CVE-2026-104848?

No public exploit for CVE-2026-104848 was found in Exploit-DB, Metasploit, Nuclei templates or public proof-of-concept repositories. That is an absence of evidence rather than proof that none exists.

How severe is CVE-2026-104848?

CVE-2026-104848 scores CVSS 9.5 (v4.0), rated critical. EPSS puts the chance of exploitation in the next 30 days at 0.5%.

What does CVE-2026-104848 affect?

CVE-2026-104848 affects tinylibs tinypool.

9.5 Critical

Tinypool is a minimal Node.js worker thread pool implementation.

CVE-2026-104848

Tinypool is a minimal Node.js worker thread pool implementation. Prior to 2.1.1, Tinypool constructs ThreadPool.options from a normal options object and reads the execArgv and env worker options in dist/index.js, allowing values inherited from a polluted Object.prototype to be copied into own properties and passed to workerthreads.Worker. An attacker who can first pollute either property can cause each newly spawned worker to load attacker-selected JavaScript through command-line preload arguments or NODEOPTIONS, resulting in code execution with the host process's privileges and possible access to CI secrets, signing material, or build artifacts. This issue is fixed in version 2.1.1.

Assessment

CVSS: 9.5 (v4.0)
Severity: Critical
EPSS: 0.5% chance of exploitation in the next 30 days
Known exploited: Not listed in CISA KEV
Exploit availability: Nothing found in Exploit-DB, Metasploit, Nuclei or public PoC repositories
Published: 2 October 2026
Last updated: 2 October 2026
Affected: tinylibs · tinypool
Weakness: CWE-1321
Assigner: security-advisories@github.com

CVSS vectorCVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H

At the source

References

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