# CVE-2026-118676: n8n before 1.123.85, 2.43.5, and 2.44.1 Credential Permission Check Bypass

Status: published. Published: 2026-10-28. Updated: 2026-11-02.

n8n before 1.123.85, 2.43.5, and 2.44.1 contains an authorization bypass vulnerability that allows member users to use credentials they cannot access by omitting default node parameters. Attackers can save and run workflows where pre-execution checks skip credential slots, causing decrypted credential values to be sent to attacker-chosen destinations.

## Remediation

No remediation reported in collected sources

## Affected products and versions

- n8n-io / n8n (n8n): ≥ 0; < 1.123.85 (affected, semver); 1.123.85 (unaffected, semver). Source: CNA: VulnCheck
- n8n-io / n8n (n8n): ≥ 2.44.0; < 2.44.1 (affected, semver); 2.44.1 (unaffected, semver). Source: CNA: VulnCheck
- n8n-io / n8n (n8n): ≥ 2.0.0; < 2.43.5 (affected, semver); 2.43.5 (unaffected, semver). Source: CNA: VulnCheck

## Severity and prioritization

- CVSS 4.0: 5.1 (medium); CVSS:4.0/AV:N/AC:H/AT:N/PR:L/UI:N/VC:L/VI:N/VA:N/SC:H/SI:L/SA:N; source: CNA: VulnCheck

- CVSS 3.1: 7.1 (high); CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:L/A:N; source: CNA: VulnCheck

- CISA KEV: No listing in collected sources

- EPSS: 0.20% as of 2026-11-02; percentile 9.82%

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

- Weaknesses: CWE-863

## Exploit evidence

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

## References

- https://github.com/n8n-io/n8n/security/advisories/GHSA-v9cx-v88r-42vw (CNA: VulnCheck; vendor-advisory)

- https://www.vulncheck.com/advisories/n8n-before-1.123.85-2.43.5-and-2.44.1-credential-permission-check-bypass (CNA: VulnCheck; third-party-advisory)

## Provenance

- CNA: VulnCheck: https://www.cve.org/CVERecord?id=CVE-2026-118676; retrieved 2026-11-02; source updated 2026-11-02

- FIRST EPSS: https://api.first.org/data/v1/epss?cve=CVE-2026-118676; retrieved 2026-11-02; source updated Not reported

Revision: cc92edfc913fd82dd822124d6a50a062943c779ab98de83722cfe44f88c45475

Canonical: https://y2.dev/cve/CVE-2026-118676

## Agent and API access

Public CVE pages, Markdown, and JSON are free to read without an account or API key.

- Public catalog: https://y2.dev/cve/index.json. Follow nextCursor with the same search, filters, sort, and limit (1–100). A null cursor marks the end.

- WebMCP: search_cve_disclosures, get_cve_disclosure, get_cve_page_markdown, get_y2_cve_access. Available in compatible browsers.

- Cyber API: https://api.y2.dev/api/v2/cyber/cves and https://api.y2.dev/api/v2/cyber/cves/{cveId}.

- Y2 Pro or Elite: create a workspace API key with the intel:cyber scope and send Authorization: Bearer <Y2_API_KEY>. Setup: https://y2.dev/docs/api/create-key.

- x402: Pay per request without an account or API key. Omit Authorization, read the HTTP 402 PAYMENT-REQUIRED challenge, validate its current requirements, and retry with PAYMENT-SIGNATURE through an authorized payment client. These browser tools never make payments. Guide: https://y2.dev/docs/api/x402.

- OpenAPI: https://y2.dev/api/openapi.yaml. Agent access metadata: https://y2.dev/cve/agent.json.

Collected public records only. Check source status for coverage and freshness.