# CVE-2026-7875: NanoClaw Host/Container Filesystem Boundary Vulnerability via Outbound Attachment Handling

Status: published. Published: 2026-05-06. Updated: 2026-11-08.

NanoClaw version 1.2.0 and prior contains a host/container filesystem boundary vulnerability in outbound attachment handling and outbox cleanup that allows a compromised or prompt-injected container to read files outside the intended outbox directory by supplying crafted messages_out.id and content.files values or creating symlinked outbox files. Attackers can exploit this vulnerability to trigger host-side reads of arbitrary files and in some cases achieve recursive deletion of paths outside the intended cleanup target.

## Remediation

- fix: The reporting source identifies this reference as a patch. Check the advisory for affected versions and supported release branches. (source: CNA: VulnCheck) — https://github.com/qwibitai/nanoclaw/pull/2001
- fix: The reporting source identifies this reference as a patch. Check the advisory for affected versions and supported release branches. (source: CNA: VulnCheck) — https://github.com/qwibitai/nanoclaw/commit/7814e45570edf0024a1a5c2ba9fbc9cb3a49f7f7

## Affected products and versions

- Qwibit / NanoClaw: 7814e45570edf0024a1a5c2ba9fbc9cb3a49f7f7 (unaffected, git); ≥ 0; ≤ 1.2.0 (affected, semver). Source: CNA: VulnCheck

## Severity and prioritization

- CVSS 3.1: 8.8 (high); CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H; source: CNA: VulnCheck

- CVSS 4.0: 9.3 (critical); CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H; source: CNA: VulnCheck

- CISA KEV: No listing in collected sources

- EPSS: 0.15% as of 2026-11-08; percentile 4.00%

- SSVC: exploitation poc; automatable no; technical impact total; source ADP: CISA-ADP

- Weaknesses: CWE-22

## Exploit evidence

- exploit: https://github.com/qwibitai/nanoclaw/pull/2001 (ADP: CISA-ADP)

## References

- https://github.com/qwibitai/nanoclaw/pull/2001 (CNA: VulnCheck; issue-tracking, patch)

- https://github.com/qwibitai/nanoclaw/commit/7814e45570edf0024a1a5c2ba9fbc9cb3a49f7f7 (CNA: VulnCheck; patch)

- https://github.com/qwibitai/nanoclaw/releases/tag/v1.2.0 (CNA: VulnCheck; release-notes)

- https://github.com/qwibitai/nanoclaw/pull/2001 (ADP: CISA-ADP; exploit)

## Provenance

- CNA: VulnCheck: https://www.cve.org/CVERecord?id=CVE-2026-7875; retrieved 2026-11-08; source updated 2026-11-08

- FIRST EPSS: https://api.first.org/data/v1/epss?cve=CVE-2026-7875; retrieved 2026-11-08; source updated Not reported

Revision: 6db5d88165433b495b95310f0d60acff8f2f27665e5dabc4ebf15493cda4be7a

Canonical: https://y2.dev/cve/CVE-2026-7875

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