# CVE-2026-89293: Missing server-side authorization in Eclipse Mnestix Browser admin server actions allows unauthenticated configuration tampering

Status: published. Published: 2026-11-03. Updated: 2026-11-03.

In Eclipse Mnestix Browser versions 1.2.0 up until but excluding 2.3.0 it was possible for an unauthenticated attacker to perform actions that are only allowed to be executed by an authorized Mnestix user, like changing the Infrastructure settings or calling the connected and authenticated Mnestix AAS Generator backend.

## Remediation

No remediation reported in collected sources

## Affected products and versions

- Eclipse Foundation / Eclipse Mnestix: ≥ 1.2.0; < 2.3.0 (affected, semver). Source: CNA: eclipse

## Severity and prioritization

- CVSS 4.0: 8.8 (high); CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:H/VA:L/SC:N/SI:N/SA:N; source: CNA: eclipse

- CVSS 4.0: 8.8 (high); CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:H/VA:L/SC:N/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: emo@eclipse.org

- CISA KEV: No listing in collected sources

- EPSS: Not available

- SSVC: Not available

- Weaknesses: CWE-862, CWE-602

## Exploit evidence

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

## References

- https://gitlab.eclipse.org/security/vulnerability-reports/-/work_items/772 (CNA: eclipse)

- https://gitlab.eclipse.org/security/cve-assignment/-/work_items/301 (CNA: eclipse)

- https://gitlab.eclipse.org/security/cve-assignment/-/work_items/301 (emo@eclipse.org)

- https://gitlab.eclipse.org/security/vulnerability-reports/-/work_items/772 (emo@eclipse.org)

## Provenance

- CNA: eclipse: https://www.cve.org/CVERecord?id=CVE-2026-89293; retrieved 2026-11-03; source updated 2026-11-03

- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-89293; retrieved 2026-11-03; source updated 2026-11-03

Revision: d8d5655595117ed5154d3bbef09ef46b58045e900f87fcb44d737be2170d9fd5

Canonical: https://y2.dev/cve/CVE-2026-89293

## 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.