# CVE-2026-126271: NocoDB before 2026.09.0 TLS Private Key Exposure via Data Source Read

Status: published. Published: 2026-11-13. Updated: 2026-11-13.

NocoDB before 2026.09.0 contains an information disclosure vulnerability that allows authenticated base Viewers to obtain TLS client private keys by reading a base's data source. The source read handler masked only the connection password, letting attackers retrieve the decrypted private key, client certificate and CA to connect directly to the external database, bypassing NocoDB permissions.

## Remediation

No remediation reported in collected sources

## Affected products and versions

- nocodb / nocodb: ≥ 0; < 2026.09.0 (affected, custom); 2026.09.0 (unaffected, custom). Source: CNA: VulnCheck

## Severity and prioritization

- CVSS 4.0: 8.3 (high); CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/SC:H/SI:N/SA:N; source: CNA: VulnCheck

- CVSS 3.1: 7.7 (high); CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N; source: CNA: VulnCheck

- CVSS 4.0: 8.3 (high); CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/SC:H/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X; source: NVD: disclosure@vulncheck.com

- CVSS 3.1: 7.7 (high); CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N; source: NVD: disclosure@vulncheck.com

- CISA KEV: No listing in collected sources

- EPSS: Not available

- SSVC: Not available

- Weaknesses: CWE-522

## Exploit evidence

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

## References

- https://github.com/nocodb/nocodb/security/advisories/GHSA-rjc4-j36j-gjjc (CNA: VulnCheck; vendor-advisory)

- https://www.vulncheck.com/advisories/nocodb-before-2026.09.0-tls-private-key-exposure-via-data-source-read (CNA: VulnCheck; third-party-advisory)

- https://github.com/nocodb/nocodb/security/advisories/GHSA-rjc4-j36j-gjjc (disclosure@vulncheck.com)

- https://www.vulncheck.com/advisories/nocodb-before-2026.09.0-tls-private-key-exposure-via-data-source-read (disclosure@vulncheck.com)

## Provenance

- CNA: VulnCheck: https://www.cve.org/CVERecord?id=CVE-2026-126271; retrieved 2026-11-13; source updated 2026-11-13

- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-126271; retrieved 2026-11-13; source updated 2026-11-13

Revision: c26f8be293b849b4fe199fa6a894df5e07aee59a5702d258852944ea9a207900

Canonical: https://y2.dev/cve/CVE-2026-126271

## 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.