What is CVE-2026-92780?

CVE-2026-92780 is a high-severity vulnerability in Didi Knowstreaming, classified under Missing Authorization. CVSS score: 8.8/10. Published 2026-09-16.

How severe is CVE-2026-92780?

High severity. CVSS v3 base score is 8.8 out of 10.

Auth bypass in Didi Knowstreaming

CVE-2026-92780

KnowStreaming through 3.4.1 fails to enforce role-based access control on REST API endpoints, allowing any authenticated user to access protected functionality. Attackers can call identity-management endpoints to create administrator accounts or grant themselves administrative privileges without proper authorization.

Vulnerability class: Broken Access Control

Published 2026-09-16 · last modified 2026-09-24.

CVSS v3 metric

CVSS v3 base score 8.8 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.005 (44.4th percentile), scored 2026-11-02.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 44th percentile — 44.4% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.005 · newest: 0.005 · change: 0.000

Affected products

Didi Knowstreaming

Weakness classification (CWE)

CWE-862 — Missing Authorization

References

github.com/didi/KnowStreaming/issues/1263 (issue-tracking)
github.com/didi/KnowStreaming (product)
github.com/didi/KnowStreaming/blob/v3.4.0/km-rest/src/main/java/com/xiaojukeji/… (technical-description)
www.vulncheck.com/advisories/knowstreaming-through-3.4.1-missing-authorization-… (third-party-advisory)

Frequently asked questions

What is CVE-2026-92780?: CVE-2026-92780 is a high-severity vulnerability in Didi Knowstreaming, classified under Missing Authorization. CVSS score: 8.8/10. Published 2026-09-16.
How severe is CVE-2026-92780?: High severity. CVSS v3 base score is 8.8 out of 10.