Is there a public exploit for CVE-2026-101894?

Yes. Proof-of-concept code for CVE-2026-101894 has been published publicly.

Is there a proof of concept for CVE-2026-101894?

Yes — 1 proof-of-concept entry is linked on this page, from public repositories and community submissions. They are listed for authorised testing only.

How severe is CVE-2026-101894?

CVE-2026-101894 scores CVSS 9.1 (v3.1), rated critical. EPSS puts the chance of exploitation in the next 30 days at 0.81%.

What does CVE-2026-101894 affect?

CVE-2026-101894 affects XhmikosR, kevva decompress.

9.1 Critical

The decompress package for Node.js extracts archives.

CVE-2026-101894

The decompress package for Node.js extracts archives. Prior to 10.2.2 and 11.1.4, the default decompress(input, output) API relies on lexical containment checks that do not account for the kernel following a planted symlink chain. An attacker can supply a crafted archive containing chained symlink entries so that a later entry resolves outside the output directory. This allows files outside output to be read or written, and overwriting startup scripts or configuration can lead to remote code execution. The maintained @xhmikosr/decompress package is fixed in 10.2.2 and 11.1.4, but the separately affected unmaintained decompress package remains unpatched through 4.2.1. This vulnerability results from a bypass of the incomplete hardening for CVE-2026-53486. @xhmikosr/decompress is fixed in versions 10.2.2 and 11.1.4.

Proof-of-concept code is published

Public PoC

Public PoCmurrez/CVE-2026-1018941 stars

Signals come from Exploit-DB, Metasploit, Nuclei and published proof-of-concept repositories. Their absence means nothing was found, not that nothing exists.

Assessment

CVSS: 9.1 (v3.1)
Severity: Critical
EPSS: 0.81% chance of exploitation in the next 30 days
Known exploited: Not listed in CISA KEV
Exploit availability: Public PoC
Published: 28 September 2026
Last updated: 30 September 2026
Affected: XhmikosR · kevva · decompress
Weakness: CWE-22, CWE-59
Assigner: security-advisories@github.com

CVSS vectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N

At the source

References

Community proofs of concept

No community proof of concept yet. If you have one for a published vulnerability and the right to share it, add it below — it will appear here once reviewed.

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