OneUptime has WhatsApp Resend Verification Authorization Bypass

published 2026-03-10 8 mo ago modified 2026-10-07 33 d ago also EUVD-2026-10703 , GHSA-cw6x-mw64-q6pv

cvss: 5.0; version 3.1, NVD
cisa kev: Not listed; not in CISA's catalog
epss: 0.4%; EPSS 0.4% chance of exploitation in 30 days, percentile 36%
public exploits: 0; none known

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.

Patch / fix

fixed in 2 links 1

npm @oneuptime/common 10.0.21
hackerbay oneuptime 10.0.21

github.com/OneUptime/oneuptime/releases/tag/10.0.21 release

CISA SSVC

Exploitation: none
Automatable: yes
Technical impact: partial
Assessed: 8 mo ago (2026-03-10)

Exploit prediction

0.42% chance of exploitation in the next 30 days, higher than 36% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

github.com https://github.com/OneUptime/oneuptime/security/advisories/GHSA-cw6x-mw64-q6pv referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by	version	score	vector
CNA	4.0	5.3	CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:L
CNA	4.0	5.3	CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:L/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
NVD	3.1	5.0	CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:L

Affected packages

ecosystem	package	affected	fixed in
npm	@oneuptime/common	<10.0.21	10.0.21

Affected products

OneUptime oneuptime

Classification

Weakness

CWE-285 Improper Authorization
CWE-307 Improper Restriction of Excessive Authentication Attempts
CWE-639 Authorization Bypass Through User-Controlled Key
CWE-862 Missing Authorization

References

github.com /OneUptime/oneuptime/security/advisories/GHSA-cw6x-mw64-q6pv
exploit, web, mitigation, vendor-advisory
github.com /OneUptime/oneuptime/releases/tag/10.0.21
web, product, release-notes
nvd.nist.gov /vuln/detail/CVE-2026-30959
advisory
github.com /OneUptime/oneuptime
package

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.

CPEs and fixed versions use Anchore's correction of NVD's data: Added CPE configurations because not yet analyzed by NVD.

Summary