What is CVE-2026-111386?

CVE-2026-111386 is a medium-severity vulnerability in Nezhahq Nezha, classified under Observable Response Discrepancy. CVSS score: 4.3/10. Published 2026-10-16.

How severe is CVE-2026-111386?

Medium severity. CVSS v3 base score is 4.3 out of 10.

Vulnerability in Nezhahq Nezha

CVE-2026-111386

Nezha from 1.7.0 before 2.3.15 contains an information disclosure vulnerability that allows authenticated members to enumerate other tenants' server IDs through differential responses. Attackers can sweep sequential IDs against getServerConfig and setServerConfig, distinguishing 'permission denied' from success payloads to map other users' servers.

Published 2026-10-16 · last modified 2026-10-16.

CVSS v3 metric

CVSS v3 base score 4.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N.

EPSS exploit prediction

No EPSS score from FIRST.org yet. New CVEs usually get one within a few days; no score means no signal yet, not low risk. How EPSS works.

Affected products

Nezhahq Nezha

Weakness classification (CWE)

CWE-204 — Observable Response Discrepancy

References

github.com/nezhahq/nezha/security/advisories/GHSA-228w-p4h4-6rvw (vendor-advisory)
github.com/nezhahq/nezha/commit/36b742a7e9a81ed782363dd19efd77b7030fbd0f (patch)
www.vulncheck.com/advisories/nezha-1.7.0-before-2.3.15-cross-tenant-server-id-e… (third-party-advisory)

Frequently asked questions

What is CVE-2026-111386?: CVE-2026-111386 is a medium-severity vulnerability in Nezhahq Nezha, classified under Observable Response Discrepancy. CVSS score: 4.3/10. Published 2026-10-16.
How severe is CVE-2026-111386?: Medium severity. CVSS v3 base score is 4.3 out of 10.