# CVE-2026-16900: Authentication Bypass

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

Zohocorp ManageEngine Log360 and EventLog Analyzer versions 13071 and below are vulnerable to an authentication bypass in local collector registration, allowing unauthenticated actor to register a local collector by sending a specially crafted registration request.

## Remediation

No remediation reported in collected sources

## Affected products and versions

- Zohocorp / Log360: ≥ 0; < 13071 (affected, custom). Source: CNA: Zohocorp
- Zohocorp / EventLog Analyzer: ≥ 0; < 13071 (affected, custom). Source: CNA: Zohocorp

## Severity and prioritization

- CVSS 3.1: 7.5 (high); CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N; source: CNA: Zohocorp

- CISA KEV: No listing in collected sources

- EPSS: Not available

- SSVC: Not available

- Weaknesses: CWE-284

## Exploit evidence

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

## References

- https://www.manageengine.com/products/eventlog/advisory/CVE-2026-16900.html (CNA: Zohocorp)

## Provenance

- CNA: Zohocorp: https://www.cve.org/CVERecord?id=CVE-2026-16900; retrieved 2026-11-03; source updated 2026-11-03

Revision: ebc24baff3f9b902163d4682439a278630a552bfd16510915582f78d029ca38d

Canonical: https://y2.dev/cve/CVE-2026-16900

## 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.