# CVE-2026-86811: Apache TomEE: Path traversal via stateful EJB passivation

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

The stateful session bean passivation mechanism derives the on-disk file name from a client-supplied identifier without validating it. A remote attacker with access to the remote EJB service can cause session state to be read from or written to files outside the passivation directory. Users are recommended to upgrade to version 10.3.0 or 11.0.0-M2, which fix the issue.

## Remediation

No remediation reported in collected sources

## Affected products and versions

- Apache Software Foundation / Apache TomEE (org.apache.openejb:openejb-core): ≥ 4.0.0-beta-1; ≤ 4.7.5 (affected, semver). Source: CNA: apache
- Apache Software Foundation / Apache TomEE (org.apache.tomee:openejb-core): ≥ 7.0.0-M1; < 10.0.0-M1 (affected, semver); ≥ 10.0.0-M1; < 10.3.0 (affected, semver); ≥ 11.0.0-M1; < 11.0.0-M2 (affected, semver). Source: CNA: apache

## Severity and prioritization

- CISA KEV: No listing in collected sources

- EPSS: Not available

- SSVC: Not available

- Weaknesses: CWE-22

## Exploit evidence

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

## References

- https://lists.apache.org/thread.html/f2x7r654o1nt2z98m39kk0m6x24mz69f (CNA: apache; vendor-advisory)

## Provenance

- CNA: apache: https://www.cve.org/CVERecord?id=CVE-2026-86811; retrieved 2026-11-10; source updated 2026-11-10

Revision: 0da12a3ff62d837aa4392e4d186187602ebaa7a53a7a99d413209358e3c775d9

Canonical: https://y2.dev/cve/CVE-2026-86811

## 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.