# CVE-2026-106070: CVE-2026-106070

Status: published. Published: 2026-10-23. Updated: 2026-11-02.

A flaw in the Node.js `zlib.ZipFile` API can cause it to return bytes that do not belong to the requested entry after the local and central header validation fails.

When `zipEntry.modified` is read on an archive whose local header does not match its central directory, either directly or while compacting the archive, the validation error is caught but the parsed local header is left cached without a content offset. A later content read then returns attacker-controlled bytes from the start of the file instead of rejecting the archive, and CRC-32 verification still passes because the attacker controls the central directory CRC. A Node.js-based scanner can therefore approve different content from what another ZIP implementation extracts from the same archive.

This vulnerability affects Node.js **26.x**.

## Remediation

No remediation reported in collected sources

## Affected products and versions

- nodejs / node: ≥ 26.12.0; ≤ 26.12.0 (affected, semver). Source: CNA: hackerone

## Severity and prioritization

- CVSS 3.0: 3.7 (low); CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:N; source: CNA: hackerone

- CVSS 3.0: 3.7 (low); CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:N; source: NVD: support@hackerone.com

- CISA KEV: No listing in collected sources

- EPSS: 0.37% as of 2026-11-02; percentile 30.54%

- SSVC: exploitation none; automatable no; technical impact partial; source ADP: CISA-ADP

- Weaknesses: CWE-840

## Exploit evidence

No exploit evidence in collected sources. This is not proof of no exploitation.

## References

- https://nodejs.org/en/blog/vulnerability/october-2026-security-releases (CNA: hackerone)

- https://nodejs.org/en/blog/vulnerability/october-2026-security-releases (support@hackerone.com)

## Provenance

- CNA: hackerone: https://www.cve.org/CVERecord?id=CVE-2026-106070; retrieved 2026-11-02; source updated 2026-11-02

- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-106070; retrieved 2026-11-02; source updated 2026-11-02

- FIRST EPSS: https://api.first.org/data/v1/epss?cve=CVE-2026-106070; retrieved 2026-11-02; source updated Not reported

Revision: c5a81001eb448a2a11eca2a622f1fdbb5b6e401bb42d68b3ff346a46b64daa51

Canonical: https://y2.dev/cve/CVE-2026-106070

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