# CVE-2026-19307: Improper Authorization vulnerability affects IBM Sterling B2B Integrator and IBM Sterling File Gateway

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

IBM Sterling B2B Integrator 6.2.1.0 through 6.2.1.2_1 and 6.2.2.0 through 6.2.2.1_1, and IBM Sterling File Gateway 6.2.1.0 through 6.2.1.2_1 and 6.2.2.0 through 6.2.2.1_1 Standard Edition could allow a remote authenticated attacker to access unauthorized pages due to improper authorization.

## Remediation

- fix: ProductVersionAPARRemediation & FixIBM Sterling B2B Integrator6.2.1.0 - 6.2.1.2_1IT49729 Apply 6.2.1.3 IBM Sterling File Gateway6.2.1.0 - 6.2.1.2_1IT49729 Apply 6.2.1.3 IBM Sterling B2B Integrator6.2.2.0 - 6.2.2.1_1IT49729 Apply 6.2.2.2IBM Sterling File Gateway6.2.2.0 - 6.2.2.1_1IT49729 Apply 6.2.2.2







The IIM versions of 6.2.1.3 and 6.2.2.2 are available on  Fix Central http://www-933.ibm.com/support/fixcentral/swg/selectFixes . 



The container versions of 6.2.1.3 and 6.2.2.2 are available in IBM Entitled Registry

  *  cp.icr.io/cp/ibm-b2bi for IBM Sterling B2B Integrator
  *  cp.icr.io/cp/ibm-sfg for IBM Sterling File Gateway (source: CNA: ibm)
- fix: The reporting source identifies this reference as a patch. Check the advisory for affected versions and supported release branches. (source: CNA: ibm) — https://www.ibm.com/support/pages/node/7293157

## Affected products and versions

- IBM / Sterling B2B Integrator: ≥ 6.2.1.0; ≤ 6.2.1.2_1, 6.2.2.0 - 6.2.2.1_1 (affected, semver). Source: CNA: ibm
- IBM / Sterling File Gateway: ≥ 6.2.1.0; ≤ 6.2.1.2_1, 6.2.2.0 - 6.2.2.1_1 (affected, semver). Source: CNA: ibm

## Severity and prioritization

- CVSS 3.1: 4.3 (medium); CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N; source: CNA: ibm

- CISA KEV: No listing in collected sources

- EPSS: Not available

- SSVC: Not available

- Weaknesses: CWE-285

## Exploit evidence

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

## References

- https://www.ibm.com/support/pages/node/7293157 (CNA: ibm; vendor-advisory, patch)

## Provenance

- CNA: ibm: https://www.cve.org/CVERecord?id=CVE-2026-19307; retrieved 2026-11-08; source updated 2026-11-08

Revision: 8879d3eaf19fdaa662fa9805e8ab24e871913dbbaa21b42af1fb7daac7ae0c9d

Canonical: https://y2.dev/cve/CVE-2026-19307

## 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.

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