What is CVE-2026-30959?

CVE-2026-30959 is a medium-severity vulnerability in Hackerbay Oneuptime, classified under Improper Authorization. CVSS score: 5.0/10. Published 2026-03-10.

How severe is CVE-2026-30959?

Medium severity. CVSS v3 base score is 5.0 out of 10.

Auth bypass in Hackerbay Oneuptime

CVE-2026-30959

OneUptime is a solution for monitoring and managing online services. The resend-verification-code endpoint allows any authenticated user to trigger a verification code resend for any UserWhatsApp record by ID. Ownership is not validated (unlike the verify endpoint). This affects the UserWhatsAppAPI.ts endpoint and the UserWhatsAppService.ts service.

Published 2026-03-10 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 5.0 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:L.

EPSS exploit prediction

EPSS: 0.004 (26.6th percentile), scored 2026-10-01.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 27th percentile — 26.6% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.004 · newest: 0.004 · change: -0.000

Affected products

Hackerbay Oneuptime
Oneuptime — versions < 10.0.21

Weakness classification (CWE)

References

github.com/OneUptime/oneuptime/security/advisories/GHSA-cw6x-mw64-q6pv (Exploit, Mitigation, Vendor Advisory)
github.com/OneUptime/oneuptime/releases/tag/10.0.21 (Product, Release Notes)

Frequently asked questions

What is CVE-2026-30959?: CVE-2026-30959 is a medium-severity vulnerability in Hackerbay Oneuptime, classified under Improper Authorization. CVSS score: 5.0/10. Published 2026-03-10.
How severe is CVE-2026-30959?: Medium severity. CVSS v3 base score is 5.0 out of 10.